The document discusses troubleshooting procedures for the Catalyst 2820 or 1900 switch. It provides guidance on identifying common problems such as POST failures, poor performance, lack of connectivity, or inability to access management functions. The front panel LEDs and switch statistics can help diagnose issues. The diagnostic console allows resetting passwords, upgrading firmware, or resetting the switch to factory defaults to resolve problems.
The BranchHub provides telephone service to small branch offices by consolidating trunk and station media gateway functions into a single device. It connects 6 analog phone lines to the PSTN and 12 analog station ports for phones. The BranchHub guarantees continuous operation even during power or network failures by switching connected phones to the PSTN. It can connect to networks via ATM or Ethernet and is configured remotely from a Sphericall Manager.
This document is a user manual for the Grandstream GXP SIP Enterprise Phone. It includes sections on installation, product overview, using the phone, configuration, software upgrades, restoring defaults, and GUI interface examples. The document provides instructions and specifications for connecting and setting up the GXP phone and its features. It also contains tables listing phone models, hardware specifications, technical specifications, and configuration menu options.
The document provides troubleshooting guidance for common issues with wireless switches, including: switch boot up problems, IP address assignment via DHCP, connectivity issues using Telnet/SSH, slow or unresponsive web interface, faulty console port, VLAN configuration loss after reboot, access port adoption failures, mobile unit association problems, failover malfunctions, version number changes after upgrades, excessive network traffic, and memory leaks. It also describes the system status LEDs and logging mechanism to help diagnose issues.
This document provides installation instructions for the Motorola RFS7000 Series RF Switch. It describes the physical specifications, power requirements, port connections including Ethernet, USB, and console ports, as well as instructions for rack mounting and powering on the device. LED codes and patterns are explained to verify proper installation and operation.
This document provides a quick installation guide for L3 Multi-Port Full Gigabit Stackable Managed Switches. It includes instructions on package contents, switch management, terminal and network setup, configuring IP addresses, setting port speeds for SFP and SFP+ ports, saving configurations, and accessing the web UI. The guide also provides contact information for customer support.
The document summarizes the benefits of adding a relay barrier between an in-system programmer and target system. A relay barrier increases flexibility by isolating the programmer lines during parametric and functional testing, only connecting them during programming. The document provides details on implementing a relay barrier with RNS's WriteNow in-system programmers, including connecting the barrier, powering options, and relay selection guidelines.
O GXP1405 Grandstream é um Telefone IP SIP de duas linhas de entrada, muito econômico, que fornece uma excelente qualidade de som e um conjunto de funcionalidades avançadas. O GXP1405 suporta as funcionalidades tradicionais de um telefone como a identificação de origem da chamada, chamada em espera, mute, call park, transferências de chamadas e correio de voz, assim como avançadas funcionalidades empresariais como, duas contas SIP independentes, suporte multilingue, conferência a três e toques atribuíveis.
Saiba mais: http://www.lojamundi.com.br/gxp1405-grandstream.html
The document discusses CCNP SWITCH study guide topics including layer 2 technologies, layer 2 protocols, VLAN configuration, and other related topics. Key points covered include SDM templates, MAC address tables, Err-disable recovery, CDP/LLDP protocols, UDLD configuration, VLAN types including access, normal, extended and voice VLANs. Configuration of VLANs, trunk ports, and protocols are described along with commands for configuration and troubleshooting. Requirements for converged voice, video and data networks on a single infrastructure are also overviewed.
The BranchHub provides telephone service to small branch offices by consolidating trunk and station media gateway functions into a single device. It connects 6 analog phone lines to the PSTN and 12 analog station ports for phones. The BranchHub guarantees continuous operation even during power or network failures by switching connected phones to the PSTN. It can connect to networks via ATM or Ethernet and is configured remotely from a Sphericall Manager.
This document is a user manual for the Grandstream GXP SIP Enterprise Phone. It includes sections on installation, product overview, using the phone, configuration, software upgrades, restoring defaults, and GUI interface examples. The document provides instructions and specifications for connecting and setting up the GXP phone and its features. It also contains tables listing phone models, hardware specifications, technical specifications, and configuration menu options.
The document provides troubleshooting guidance for common issues with wireless switches, including: switch boot up problems, IP address assignment via DHCP, connectivity issues using Telnet/SSH, slow or unresponsive web interface, faulty console port, VLAN configuration loss after reboot, access port adoption failures, mobile unit association problems, failover malfunctions, version number changes after upgrades, excessive network traffic, and memory leaks. It also describes the system status LEDs and logging mechanism to help diagnose issues.
This document provides installation instructions for the Motorola RFS7000 Series RF Switch. It describes the physical specifications, power requirements, port connections including Ethernet, USB, and console ports, as well as instructions for rack mounting and powering on the device. LED codes and patterns are explained to verify proper installation and operation.
This document provides a quick installation guide for L3 Multi-Port Full Gigabit Stackable Managed Switches. It includes instructions on package contents, switch management, terminal and network setup, configuring IP addresses, setting port speeds for SFP and SFP+ ports, saving configurations, and accessing the web UI. The guide also provides contact information for customer support.
The document summarizes the benefits of adding a relay barrier between an in-system programmer and target system. A relay barrier increases flexibility by isolating the programmer lines during parametric and functional testing, only connecting them during programming. The document provides details on implementing a relay barrier with RNS's WriteNow in-system programmers, including connecting the barrier, powering options, and relay selection guidelines.
O GXP1405 Grandstream é um Telefone IP SIP de duas linhas de entrada, muito econômico, que fornece uma excelente qualidade de som e um conjunto de funcionalidades avançadas. O GXP1405 suporta as funcionalidades tradicionais de um telefone como a identificação de origem da chamada, chamada em espera, mute, call park, transferências de chamadas e correio de voz, assim como avançadas funcionalidades empresariais como, duas contas SIP independentes, suporte multilingue, conferência a três e toques atribuíveis.
Saiba mais: http://www.lojamundi.com.br/gxp1405-grandstream.html
The document discusses CCNP SWITCH study guide topics including layer 2 technologies, layer 2 protocols, VLAN configuration, and other related topics. Key points covered include SDM templates, MAC address tables, Err-disable recovery, CDP/LLDP protocols, UDLD configuration, VLAN types including access, normal, extended and voice VLANs. Configuration of VLANs, trunk ports, and protocols are described along with commands for configuration and troubleshooting. Requirements for converged voice, video and data networks on a single infrastructure are also overviewed.
Packet Tracer Simulation Lab Layer3 RoutingJohnson Liu
The document describes setting up routing between two routers. It involves:
1. Configuring WAN interfaces on each router and assigning IP addresses between them.
2. Setting up LAN segments behind each router by configuring LAN interfaces and assigning IP addresses.
3. Enabling static routing on each router to allow routing between the LAN segments since dynamic routing protocols have not been configured yet.
The document provides an overview and instructions for configuring and using the Danfoss Ethernet Master gateway. The Ethernet Master allows communication between Danfoss VLT frequency drives on an FC-bus network and an Ethernet network, enabling control and monitoring of the drives from a PLC or HMI. Key features include: connecting up to 16 drives; IP address configuration via DIP switches, ARP command, or Netbiter tool; monitoring drives via built-in web server; and memory mapping for control/status data exchange with drives.
This document provides instructions for configuring VLANs and trunking between two switches to allow communication between VLANs. Key steps include creating VLANs 10, 20 and 30 on each switch and assigning ports to each VLAN. A trunk link is configured between the switches to allow traffic to pass between matched VLANs. The functionality is tested by pinging hosts in different VLANs and ports before and after moving them to validate connectivity based on VLAN and trunk configuration.
This document provides specifications for the DigiFlex® PerformanceTM Servo Drive DPCANTR-040B080. It is a digital servo drive designed to drive brushed and brushless servomotors in torque, velocity, or position mode using space vector modulation. It features a CANopen interface, programmable I/O, and is compliant with various safety standards including CE, UL, and RoHS. The drive has a peak current of 40A, continuous current of 20A, and supply voltage range of 20-80VDC.
This document provides information about the DigiFlex® PerformanceTM Servo Drive DPCANTR-060B080. It is a digital servo drive designed to drive brushed and brushless motors in torque, velocity, or position mode. It features a CANopen interface for networking and RS-232 interface for configuration. The drive has programmable digital and analog inputs and outputs and supports various command and feedback types.
The DigiFlex® PerformanceTM Servo Drive DPCANTR-020B080 is a digital servo drive designed to drive brushed and brushless servomotors in torque, velocity, or position mode. It features a CANopen interface for networking and RS-232 interface for configuration. The drive supports various command sources and feedback types, and includes programmable digital and analog inputs/outputs. It is compliant with various safety and EMC standards and measures 132.5 x 89.5 x 35.9 mm.
The DigiFlex® PerformanceTM Servo Drive DPCANTR-015B200 is a digital servo drive designed to drive brushed and brushless servomotors in torque, velocity, or position mode. It features a CANopen interface for networking and RS-232 interface for configuration. The drive supports various command sources and feedback types, and includes programmable digital and analog inputs/outputs to interface with external devices. It is compliant with various safety and EMC standards.
This document is the user guide for the MSI-6260 Trans-Weigh crane scale system. It contains information on installation, operation, calibration, troubleshooting and specifications for the crane unit and indicator unit. The table of contents outlines the various sections and topics covered in the user guide.
FEATURE and BENEFITS:
Hardware Architecture Providing
High Throughput Performance
and Repeatable Results /
Accuracy
Interface - 10/100/1000, 10GbE,
40GbE Copper or Fiber
Supports UDP, TCP, MPLS,
VLAN, ESP, LPD & Encrypted
Packets
Supports multiple links and
filtering of packets
Validate and Optimize your
Network before Deployment to
avoid Costly Application issues
Easy to use - Command Line
Interface with Scripting Support
or GUI Interface
Bandwidth - 300bps - 40GbE in
1bps increments
Delay - 0 ms to 10 sec. in
1ms increments, settings for
Constant, Uniform and Normal
Other Features - Real time traffic
graph and Network Statistics,
output reports
√ Approvals - UL, CSA, CE, FCC
and RoHS
2U Sturdy Rack Mount
Enclosure, 90-240VAC
This document provides specifications for the DigiFlex® PerformanceTM Servo Drive DPRAHIS-015S400. It can drive brushed and brushless servomotors in torque, velocity, or position mode. Key features include regenerative braking, space vector modulation for efficiency, configurable I/O, and compliance with safety standards like UL, CE, and RoHS. It connects to motors and controllers via several ports and has integrated protections for short circuits and overheating.
The document provides installation instructions for the TV Guide On Screen SE system in 12 steps: 1) Check for available rack space, 2) check the phone line, 3) unpack and inspect components, 4) install rails and shelf, 5) install the chassis, 6) connect video output to cable system, 7) connect audio outputs, 8) install the phone director, 9) install the remote power switch, 10) install the line conditioner, and 12) the system will automatically begin once powered on.
The document provides specifications for the DigiFlex® PerformanceTM Servo Drive DPCANIR-C060A400. It is a fully digital servo drive designed to drive brushed and brushless servomotors in torque, velocity, or position mode. It features a CANopen interface, configurable I/O, and is compatible with various motor and feedback types. Key specifications include a peak current of 60A, continuous current of 30A, and operating in torque, velocity, or position control modes.
The DigiFlex® PerformanceTM Servo Drive DPRANIR-C060A400 is a digital servo drive designed to drive brushed and brushless servomotors in torque, velocity, or position mode. It employs Space Vector Modulation for higher efficiency and features programmable I/O, configurable limits, and PID control loops. The drive is configured and programmed using DriveWare® 7 software and stores parameters in non-volatile memory.
This servo drive operates in torque, velocity, or position mode using space vector modulation. It features a CANopen interface, configurable I/O, and supports various motor and feedback types. The drive can deliver up to 25A peak current and is compliant with various safety and EMC standards.
This document provides an installation and operation overview for Midian's CAD series products. It includes sections on hardware specifications, installation, programming, software installation, product operation, technical notes and Midian contact information. The document outlines how to test the radio, connect the modem, program the software, set up the hardware and software, and use the various screens and features to monitor radio traffic and selectively call radios.
This document provides information on the DigiFlex® PerformanceTM Servo Drive DPRAHIR-015A400. It can drive brushed and brushless servomotors in torque, velocity, or position mode. Key features include regenerative braking, space vector modulation for efficiency, and configurable inputs/outputs. It has a peak current of 15A, continuous current of 7.5A, and supports feedback from encoders and resolvers.
The LE-140XTF is a 14-port Ethernet module that provides 12 10BaseT ports and 2 fiber optic ports. It allows for modular, flexible networking topologies through hub cascading. The module supports multiple independent Ethernet LANs, port and link redundancy, and extensive diagnostics and management features.
Data conversion for data acquisition is a two-part process that involves sampling and then converting signals into digital venues. These processes inherently remove part of the complete analog signal in exchange for the power and robustness of digital signal handling. This becomes especially difficult when trying to capture signals at the limits of the resolution and speed of our systems. In this session, learn how to design a data conversion system that minimizes the signal loss to match the signal handling requirements … even on the hard ones.
This document provides instructions for installing and configuring the AirGateMax outdoor wireless access point. It includes details on the hardware components, mounting the device outdoors, making connections to an indoor network via an Ethernet over powerline adapter, and accessing the device's web-based interface using its IP address to configure settings. Basic information on the device's status indicators and administrative login is also provided.
This document provides specifications for the DigiFlex® PerformanceTM Servo Drive DPRANIE-060A400. It can drive brushed and brushless motors in torque, velocity, or position mode. It has a peak current of 60A, continuous current of 30A, and operates on a supply voltage of 100-240VAC. It features space vector modulation, configurable I/O, and is compliant with various safety standards.
The following summarizes the key points from the document:
1. The document contains questions and answers related to networking concepts such as VLANs, trunking, routing, and wireless networking.
2. It covers topics like spanning tree protocol, router-on-a-stick, inter-VLAN routing, trunking, wireless authentication, and access point configuration.
3. The questions are multiple choice designed to test knowledge of networking fundamentals and best practices.
How to Troubleshooting VLAN Switch Problems-Part1IT Tech
The document provides troubleshooting steps for common VLAN and switch issues. It describes examining physical connectivity and interfaces, VLAN configurations, trunking settings, VTP settings, and spanning tree settings. It also provides examples of troubleshooting a scenario where the internet is down by methodically working through layers, verifying configurations, and discovering a potential VTP domain name mismatch between switches.
Packet Tracer Simulation Lab Layer3 RoutingJohnson Liu
The document describes setting up routing between two routers. It involves:
1. Configuring WAN interfaces on each router and assigning IP addresses between them.
2. Setting up LAN segments behind each router by configuring LAN interfaces and assigning IP addresses.
3. Enabling static routing on each router to allow routing between the LAN segments since dynamic routing protocols have not been configured yet.
The document provides an overview and instructions for configuring and using the Danfoss Ethernet Master gateway. The Ethernet Master allows communication between Danfoss VLT frequency drives on an FC-bus network and an Ethernet network, enabling control and monitoring of the drives from a PLC or HMI. Key features include: connecting up to 16 drives; IP address configuration via DIP switches, ARP command, or Netbiter tool; monitoring drives via built-in web server; and memory mapping for control/status data exchange with drives.
This document provides instructions for configuring VLANs and trunking between two switches to allow communication between VLANs. Key steps include creating VLANs 10, 20 and 30 on each switch and assigning ports to each VLAN. A trunk link is configured between the switches to allow traffic to pass between matched VLANs. The functionality is tested by pinging hosts in different VLANs and ports before and after moving them to validate connectivity based on VLAN and trunk configuration.
This document provides specifications for the DigiFlex® PerformanceTM Servo Drive DPCANTR-040B080. It is a digital servo drive designed to drive brushed and brushless servomotors in torque, velocity, or position mode using space vector modulation. It features a CANopen interface, programmable I/O, and is compliant with various safety standards including CE, UL, and RoHS. The drive has a peak current of 40A, continuous current of 20A, and supply voltage range of 20-80VDC.
This document provides information about the DigiFlex® PerformanceTM Servo Drive DPCANTR-060B080. It is a digital servo drive designed to drive brushed and brushless motors in torque, velocity, or position mode. It features a CANopen interface for networking and RS-232 interface for configuration. The drive has programmable digital and analog inputs and outputs and supports various command and feedback types.
The DigiFlex® PerformanceTM Servo Drive DPCANTR-020B080 is a digital servo drive designed to drive brushed and brushless servomotors in torque, velocity, or position mode. It features a CANopen interface for networking and RS-232 interface for configuration. The drive supports various command sources and feedback types, and includes programmable digital and analog inputs/outputs. It is compliant with various safety and EMC standards and measures 132.5 x 89.5 x 35.9 mm.
The DigiFlex® PerformanceTM Servo Drive DPCANTR-015B200 is a digital servo drive designed to drive brushed and brushless servomotors in torque, velocity, or position mode. It features a CANopen interface for networking and RS-232 interface for configuration. The drive supports various command sources and feedback types, and includes programmable digital and analog inputs/outputs to interface with external devices. It is compliant with various safety and EMC standards.
This document is the user guide for the MSI-6260 Trans-Weigh crane scale system. It contains information on installation, operation, calibration, troubleshooting and specifications for the crane unit and indicator unit. The table of contents outlines the various sections and topics covered in the user guide.
FEATURE and BENEFITS:
Hardware Architecture Providing
High Throughput Performance
and Repeatable Results /
Accuracy
Interface - 10/100/1000, 10GbE,
40GbE Copper or Fiber
Supports UDP, TCP, MPLS,
VLAN, ESP, LPD & Encrypted
Packets
Supports multiple links and
filtering of packets
Validate and Optimize your
Network before Deployment to
avoid Costly Application issues
Easy to use - Command Line
Interface with Scripting Support
or GUI Interface
Bandwidth - 300bps - 40GbE in
1bps increments
Delay - 0 ms to 10 sec. in
1ms increments, settings for
Constant, Uniform and Normal
Other Features - Real time traffic
graph and Network Statistics,
output reports
√ Approvals - UL, CSA, CE, FCC
and RoHS
2U Sturdy Rack Mount
Enclosure, 90-240VAC
This document provides specifications for the DigiFlex® PerformanceTM Servo Drive DPRAHIS-015S400. It can drive brushed and brushless servomotors in torque, velocity, or position mode. Key features include regenerative braking, space vector modulation for efficiency, configurable I/O, and compliance with safety standards like UL, CE, and RoHS. It connects to motors and controllers via several ports and has integrated protections for short circuits and overheating.
The document provides installation instructions for the TV Guide On Screen SE system in 12 steps: 1) Check for available rack space, 2) check the phone line, 3) unpack and inspect components, 4) install rails and shelf, 5) install the chassis, 6) connect video output to cable system, 7) connect audio outputs, 8) install the phone director, 9) install the remote power switch, 10) install the line conditioner, and 12) the system will automatically begin once powered on.
The document provides specifications for the DigiFlex® PerformanceTM Servo Drive DPCANIR-C060A400. It is a fully digital servo drive designed to drive brushed and brushless servomotors in torque, velocity, or position mode. It features a CANopen interface, configurable I/O, and is compatible with various motor and feedback types. Key specifications include a peak current of 60A, continuous current of 30A, and operating in torque, velocity, or position control modes.
The DigiFlex® PerformanceTM Servo Drive DPRANIR-C060A400 is a digital servo drive designed to drive brushed and brushless servomotors in torque, velocity, or position mode. It employs Space Vector Modulation for higher efficiency and features programmable I/O, configurable limits, and PID control loops. The drive is configured and programmed using DriveWare® 7 software and stores parameters in non-volatile memory.
This servo drive operates in torque, velocity, or position mode using space vector modulation. It features a CANopen interface, configurable I/O, and supports various motor and feedback types. The drive can deliver up to 25A peak current and is compliant with various safety and EMC standards.
This document provides an installation and operation overview for Midian's CAD series products. It includes sections on hardware specifications, installation, programming, software installation, product operation, technical notes and Midian contact information. The document outlines how to test the radio, connect the modem, program the software, set up the hardware and software, and use the various screens and features to monitor radio traffic and selectively call radios.
This document provides information on the DigiFlex® PerformanceTM Servo Drive DPRAHIR-015A400. It can drive brushed and brushless servomotors in torque, velocity, or position mode. Key features include regenerative braking, space vector modulation for efficiency, and configurable inputs/outputs. It has a peak current of 15A, continuous current of 7.5A, and supports feedback from encoders and resolvers.
The LE-140XTF is a 14-port Ethernet module that provides 12 10BaseT ports and 2 fiber optic ports. It allows for modular, flexible networking topologies through hub cascading. The module supports multiple independent Ethernet LANs, port and link redundancy, and extensive diagnostics and management features.
Data conversion for data acquisition is a two-part process that involves sampling and then converting signals into digital venues. These processes inherently remove part of the complete analog signal in exchange for the power and robustness of digital signal handling. This becomes especially difficult when trying to capture signals at the limits of the resolution and speed of our systems. In this session, learn how to design a data conversion system that minimizes the signal loss to match the signal handling requirements … even on the hard ones.
This document provides instructions for installing and configuring the AirGateMax outdoor wireless access point. It includes details on the hardware components, mounting the device outdoors, making connections to an indoor network via an Ethernet over powerline adapter, and accessing the device's web-based interface using its IP address to configure settings. Basic information on the device's status indicators and administrative login is also provided.
This document provides specifications for the DigiFlex® PerformanceTM Servo Drive DPRANIE-060A400. It can drive brushed and brushless motors in torque, velocity, or position mode. It has a peak current of 60A, continuous current of 30A, and operates on a supply voltage of 100-240VAC. It features space vector modulation, configurable I/O, and is compliant with various safety standards.
The following summarizes the key points from the document:
1. The document contains questions and answers related to networking concepts such as VLANs, trunking, routing, and wireless networking.
2. It covers topics like spanning tree protocol, router-on-a-stick, inter-VLAN routing, trunking, wireless authentication, and access point configuration.
3. The questions are multiple choice designed to test knowledge of networking fundamentals and best practices.
How to Troubleshooting VLAN Switch Problems-Part1IT Tech
The document provides troubleshooting steps for common VLAN and switch issues. It describes examining physical connectivity and interfaces, VLAN configurations, trunking settings, VTP settings, and spanning tree settings. It also provides examples of troubleshooting a scenario where the internet is down by methodically working through layers, verifying configurations, and discovering a potential VTP domain name mismatch between switches.
The document contains questions and answers about networking concepts such as VLANs, trunking, VTP, STP, wireless networking, and inter-VLAN routing. Based on the provided exhibit and configuration snippets, it tests the reader's understanding of switch and router configuration as well as common network design implementations.
S2 will tag the traffic with VLAN ID 99 when it forwards it from host PC1 over the trunk link. When DLS2 switch is connected to the DLS1 switch via a trunk link, DLS2 will be updated with the VLANs that are configured on DLS1 because DLS2 is in client mode. If the network cable of Host A is moved from interface Fa0/1 to Fa0/3 on switch SW1, Host A is no longer a member of VLAN 10, because port Fa0/3 has been manually assigned to VLAN 30.
The document provides product data on DeltaV control network hardware, including:
1. DeltaV smart switches that are easy to install and maintain, scalable, provide network diagnostics, and offer a fully redundant network.
2. Media converters that convert fiber optic signals to copper and vice versa, allowing connections over longer cable runs.
3. Specifications for various DeltaV smart switch models, including ports, power requirements, interfaces, and certifications.
This document describes the configuration of basic VLANs on Cisco switches. It provides instructions to:
1. Cable a network topology with three switches and six PCs according to a diagram. Clear the switch configurations and initialize ports.
2. Perform basic switch configurations including hostname, passwords and port assignments.
3. Create VLANs 10, 20, 30 and 99 on the switches and assign names. Assign switch ports on S2 and S3 to the appropriate VLANs.
4. Configure trunking between the switches, setting VLAN 99 as the native VLAN. Verify trunk configuration and switch connectivity.
5. Test connectivity between PCs on different VLANs and subnets before and after moving a PC to
The document contains a 20 question multiple choice exam about networking technologies like HSRP, SNMP, VLANs, STP, QoS, VoIP, and security. The questions cover topics such as router redundancy protocols, switch configuration, trunking protocols, and network hardening techniques.
The document discusses configuring and troubleshooting VLANs on Cisco switches. It describes creating VLANs on a switch, assigning switch ports to VLANs in access mode, and configuring trunk ports. Key steps include using the global config vlan command to create VLANs, the show vlan command to verify configurations, and the switchport mode access and switchport access commands to assign access ports to VLANs. The document also covers VTP modes, extended VLAN ranges, and trunk port configuration options.
The document describes DeltaV control network hardware, including smart switches. It summarizes that the DeltaV control network is an easy to install and maintain Ethernet network dedicated to connecting DeltaV devices. The DeltaV smart switches are next generation switches designed specifically for DeltaV that require no configuration and provide network diagnostics and security features. Ordering information is provided for DIN rail mount smart switches with various uplink port configurations.
VLANs logically segment networks based on functions or project teams, regardless of physical connections. VLANs create broadcast domains by assigning switch ports to VLANs. Routers are used for communication between VLANs. Common VLAN types include port-based VLANs where a device assumes the VLAN of its connected port, and dynamic VLANs where software assigns VLANs based on MAC addresses. VLAN tagging allows a link to carry multiple VLANs by adding a tag to frames to designate VLAN membership.
Ch3 ccna exploration 3 lan switching and wirelesskratos2424
This document contains a CCNA exam with multiple choice questions about VLANs and trunking. Some key points:
- VLANs improve network security by isolating users and reducing broadcast storms. Trunking allows multiple VLANs to cross a link.
- In a default switch configuration, all ports are members of VLAN1.
- For trunking to occur, both switch ports must be configured consistently (e.g. with trunk mode on).
- VLAN tags are only added on trunk links that carry multiple VLANs between switches.
- Non-default VLANs must use extended range numbers like 20-30. VLANs can be configured in VLAN database or global config mode.
This document provides guidance on troubleshooting common network issues like slow connectivity or lack of connectivity. It describes potential causes such as incompatible NIC settings, network congestion, bad cabling, or server overload. The document then gives instructions for using basic networking tools like ifconfig, mii-tool, ethtool, netstat to test cable connections, view NIC status and errors, and determine link status. These tests help identify issues like duplex mismatches, excessive errors, or loss of link that could be degrading network performance.
1. The document discusses advanced deployment options for the Sangfor WANO 9.5.8R1 device, including VLAN network environments, 30 bit mask network environments, and high availability (HA) deployment.
2. For VLAN network environments, multiple IPs need to be configured on multiple VLANs to allow traffic segmentation and acceleration across VLANs. VLAN configuration on the HQ device is also required to communicate with VLAN traffic.
3. Propagate link down should be enabled in double bridge mode scenarios to prevent traffic loss if one bridge link goes down without the other device being notified.
4. A rollover or console cable is needed to connect the devices for HA synchronization when using HA deployment.
Final exam ccna exploration 3 lan switching and wirelesskratos2424
The document is a practice exam for the CCNA Exploration 3 LAN Switching and Wireless final exam. It contains 25 multiple choice questions covering topics such as IP addressing, switch configuration, VLANs, trunking, STP, and inter-VLAN routing.
This document provides installation and configuration instructions for the Ubiquiti EdgeSwitch managed PoE+ Gigabit switch. It includes package contents, hardware overview with descriptions of front panel ports and LEDs, installation requirements and steps, accessing the web-based configuration interface using the default IP address, configuring PoE settings, and specifications. The summary provides high-level information about connecting and setting up the switch.
This document provides an overview of troubleshooting a GPON system and includes several case studies. It begins with an introduction to system fault troubleshooting and categorizing common system faults. Procedures for troubleshooting are described such as confirming the system environment, checking LED status and alarms. Specific faults like board registration failures, NMS disconnections and switchover failures are examined in detail. Finally, four case studies are presented and the troubleshooting processes used to resolve the issues are outlined.
This document describes a lab to configure VLANs and trunking between two switches. The objectives are to:
1. Build the network topology and configure basic switch settings.
2. Create VLANs on each switch and assign ports to the appropriate VLAN.
3. Maintain VLAN assignments by changing port VLANs, assigning multiple ports, and removing VLANs.
4. Configure an 802.1Q trunk between the switches to allow traffic from different VLANs to travel across the single link.
This document provides the questions and answers for the CCNA Exploration 3 - FINAL Exam Version 4.0. There are 26 multiple choice questions that cover topics related to LAN switching and wireless networking. The questions test knowledge of VLANs, trunking, STP, VTP, wireless networking concepts, and inter-VLAN routing configurations.
This document describes a lab that configures Rapid PVST+, PortFast, and BPDU Guard on a network with three switches (S1, S2, S3) and two PCs (PC-A, PC-C). The lab has four parts: 1) build the network and configure basic settings, 2) configure VLANs, native VLAN, and trunks, 3) configure the root bridge and examine PVST+ convergence, and 4) configure Rapid PVST+, PortFast, BPDU Guard, and examine convergence. The objectives are to optimize network performance by configuring Rapid PVST+ for faster convergence, and configure PortFast and BPDU Guard on edge ports.
The document contains information about CCNA 3 Chapter 3 exam answers and questions regarding VLAN configuration and trunking. It provides example questions and exhibits related to VLAN implementation on Cisco switches. Specifically:
- It asks questions about VLAN configuration, trunking configuration and native VLAN mismatches that could cause communication issues between hosts on different VLANs.
- Examples show how switches must be configured for trunking with matching native VLANs to allow inter-VLAN communication. Access ports must be configured properly for the correct VLAN as well.
- Questions cover benefits of VLANs like network segmentation, security and reduced broadcast domains. They also address default characteristics of VLAN 1 and proper configuration of trunk and access ports.
El documento describe los contenidos de un curso sobre JDBC y URM. Explica que JDBC se utiliza para el acceso a bases de datos y URM para mapeadores de objetos relacionales. Detalla los conceptos clave de JDBC como drivers, conexión a la base de datos mediante DriverManager, ejecución de sentencias SQL y uso de ResultSet.
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Reso problemas
1. CHAPT E R 7
Troubleshooting
There are several ways to troubleshoot problems associated with Catalyst 2820 or 1900
installation and performance. The LEDs on the front panel are the quickest way to evaluate
the operation of the switch; statistics provided by the management console or SNMP
management station can provide more details about the cause of connectivity and
performance problems; the power-on self-test (POST) ensures that the switch is
functioning properly at installation and when subsequently powered on.
If the switch does not operate properly or you are unable to access the management console,
you can resolve these problems by using the diagnostic console described in “Diagnostic
Console Recovery Procedures.”
Potential problems can be grouped into the following categories:
• POST failure
• Poor performance
• No connectivity
• No access to out-of-band management
• Forgotten or lost password
• Corrupted firmware
POST Failure
When the switch is first turned on and begins its POST, the system and port LEDs are green.
As each of the 13 tests is run, the port LEDs, starting with number 16, turn off. Because
there are only 13 tests, LEDs 15, 14, and 13 are unaffected.
Troubleshooting 7-1
2. Diagnosing Problems
If you are installing a 12-port Catalyst 1900, the LED for port A, the 100BaseT port, turns
off first, followed by ports 12, 11, 10, and so on.
After the POST completes successfully, the port LEDs blink green and go off, indicating
that the switch is operational. If a test fails, the port LEDs turn green, the port LED
associated with the test stays off, and the system LED turns amber.
All POST failures except the real-time clock test (number 5) are fatal. If the real-time clock
fails POST, the switch begins forwarding packets, but the system LED turns amber, and a
POST-failure message appears on the console screen. Certain switch features, such as the
bandwidth utilization meter, are lost if the real-time-clock test fails.
Note When the POST completes successfully, Spanning-Tree Protocol (if enabled)
immediately turns the port LEDs amber while it discovers the network topology.
Spanning-tree discovery takes approximately 30 seconds to complete, and no packet
forwarding takes place during this time.
Diagnosing Problems
Use Table 7-1 to identify your problem and resolve it. Note that those problems that refer
to modules inserted in high-speed expansion slots apply only to the Catalyst 2820.
7-2 Catalyst 2820 Series and Catalyst 1900 Series Installation and Configuration Guide
3. Diagnosing Problems
Table 7-1 Common Problems and Their Solutions
Symptom Possible Cause Resolution
Poor Incorrect Full-Duplex Settings for
Performance or 100BaseT Connections
Excessive Errors The full-duplex LED on the module front panel
indicates a full-duplex setting. Fixed
100BaseTX full-duplex port status is shown
with the Mode button and the FDUP LED.
Check the port statistics:
• FCS and alignment errors on the port mean Configure port for half duplex.
the switch port is configured for full duplex
and the other device is a repeater or
half-duplex device.
• Late collisions mean the port is configured Configure the port for full duplex.
for half duplex and the attached device is full
duplex.
Cabling Distance Exceeded
Port statistics show excessive FCS,
late-collision, or alignment errors. For
100BaseTX connections:
• The distance between the port and the Reduce the cable length to within the
attached device exceeds 100 meters. recommended distances.
• If attached to a repeater, the total distance See your 100BaseT repeater documentation for
between the two end stations exceeds the cabling guidelines.
100BaseT cabling guidelines.
For 10BaseT connections: The distance Reduce the cable length to within the
between the port and the attached device recommended distances.
exceeds 100 meters.
Bad Adapter in Attached Device
Excessive errors found in port statistics. Run adapter card diagnostic utility.
Troubleshooting 7-3
4. Diagnosing Problems
Symptom Possible Cause Resolution
No Connectivity Incorrect or Bad Cable
The following are indicated by no link at both
ends:
• A crossover cable was used when See the “Connector Pinouts” section in the
straight-through was required, or vice-versa. Appendix “Technical Specifications” for the
correct pinouts and the proper use of crossover
vs. straight-through cables.
• Bad cable Replace with a tested good cable.
NetWare Network Numbers Misconstrued
If NetWare is used, the following message can All the nodes connected to ports in a single
appear on the server screen: VLAN should be assigned the same network
Router configuration error number.
detected. Node xxxxxxxx claims
network zzzzzzzz should be
yyyyyyyy.
If you’re using the IP protocol,
try pinging the other end.
VLANs Misconfigured
• Ports are assigned to different VLANS and Ensure the two nodes are connected to ports on
cannot communicate. the same VLAN. See the “VLAN
Configuration” section in the “Out-of-Band
Management” chapter to list ports of a VLAN.
If using SNMP, see the “Catalyst 2820 and 1900
Enterprise-Specific MIB” section in the
“In-Band Management” chapter for the MIB
objects to use.
• If a port belongs to two or more VLANs and If there is a router, check the router
the VLANs are connected in other ways configuration.
besides the overlapping port, an unstable Eliminate one of the two connections between
topology can be created. the two VLANs.
Expansion Slot A Incorrect Catalyst 2820 Module Installation See the Troubleshooting section of the Catalyst
or B LEDs Off 2820 Modules User Guide.
7-4 Catalyst 2820 Series and Catalyst 1900 Series Installation and Configuration Guide
5. Diagnostic Console Recovery Procedures
Symptom Possible Cause Resolution
System LED Corrupt Firmware Attach a monitor to the serial port to display the
amber; port LEDs diagnostic console. See the “Systems
off Engineering Menu” section of this chapter for
firmware upgrade instructions.
No management • Configuration problems Use the diagnostic console as described in the
console access “Systems Engineering Menu” section of this
chapter to reset the switch.
Reset the modem parameters to their factory
• Incorrect baud rate defaults with the diagnostic console.
Diagnostic Console Recovery Procedures
The diagnostic console allows you to perform the following tasks:
• Recover from a lost or forgotten password
If you have forgotten or lost the password for the management console, you can display
it, or, depending on the version of the boot firmware you are using, call Cisco Systems
to receive the factory-installed password.
• Recover from corrupted firmware
If the switch firmware has become corrupted, you can access the switch to upgrade the
firmware.
• Reset the switch to factory defaults
If the current configuration prevents the switch from functioning properly, you can reset
the switch to the factory defaults.
• Reset the RS-232 characteristics for the management console interface to the factory
default
How you access the diagnostic console depends on which task you are performing. Some
diagnostic console functions, such as recovering a lost or forgotten password, depend on
the version of the boot firmware you are using.
Troubleshooting 7-5
6. Diagnostic Console Recovery Procedures
Displaying the Diagnostic Console
Follow this procedure to display the diagnostic console:
Step 1 Attach a monitor to the switch RS-232 port.
Step 2 Disconnect the power cord from the rear panel.
Step 3 Press the LED Mode button on the front panel, and hold it in.
Step 4 While holding in the LED Mode button, reconnect the power cord. The Diagnostic
Console Logon screen shown in Figure 7-1 appears.
Step 5 If you are prompted for a password, enter the password you set for the
management console.
Step 6 Press Return to display the Systems Engineering Menu shown in Figure 7-2.
Recovering From a Lost or Forgotten Password
Follow this procedure if you have lost or forgotten the management console password:
Step 1 Follow the procedure in the section “Displaying the Diagnostic Console.”
Step 2 Check the boot firmware version number displayed on the menu.
• If the boot firmware version is 1.10 or higher, select S, and then select V on the
System Debug Interface Menu, shown in Figure 7-3, to display the
management console password.
• If the boot firmware version is 1.09 or lower, note the Ethernet address on the
Diagnostic Console logon screen, and call Cisco Systems for the
factory-installed password.
Recovering from Corrupted Firmware
Step 1 Follow the steps in the section “Displaying the Diagnostic Console.”
Step 1 From the Systems Engineering Menu, select option U.
Step 2 You are prompted to confirm the download. Enter Y at the prompt:
Do you wish to continue with the download process, [Y]es or [N]o?
7-6 Catalyst 2820 Series and Catalyst 1900 Series Installation and Configuration Guide
7. Diagnostic Console Recovery Procedures
It can take up to a minute to erase the existing firmware. If you are using boot
firmware version 1.10 or higher, you are then prompted to choose a transmission
speed. Enter a 5 or 9 at the prompt.
Do you wish to upgrade at [9]600 (console speed) or [5]7600?
The baud rate used by the switch returns to 9600 after the download is complete.
The following prompt appears:
Waiting for image at the configured baud rate
Step 3 Start the XMODEM transfer from the application you are running.
Step 4 The Diagnostic Console logon screen is displayed when the upgrade is complete.
Press Return to display the Systems Engineering Menu, and then select C to
restart the switch using the upgraded firmware.
Figure 7-1 Diagnostic Console Logon
-------------------------------------------------
Cisco Systems Diagnostic Console
Copyright(c) Cisco Systems, Inc. 1997
All rights reserved.
Ethernet Address: 00-C0-1D-80-19-29
-------------------------------------------------
H9652
Press enter to continue.
Resetting the System to Factory Defaults
There can be times when you need the diagnostic console even though the firmware is valid.
This could happen, for example, if the switch configuration prevents the firmware from
executing properly and you cannot display the management console.
Step 1 Use the procedure described in the section “Displaying the Diagnostic Console”
to display the Systems Engineering Menu shown in Figure 7-2.
Step 2 Select option F and press Return to reset the system to the factory defaults.
Troubleshooting 7-7
8. Diagnostic Console Recovery Procedures
Resetting the RS-232 Interface to the Factory Defaults
Step 1 Display the Systems Engineering Menu with the procedure described in the
section “Displaying the Diagnostic Console.”
Step 2 Select S and press Return to display the System Debug Interface Menu.
Step 3 Select option R and press Return.
Systems Engineering Menu
Use this menu, shown in Figure 7-2, to troubleshoot firmware problems and then bring up
the firmware as usual.
Figure 7-2 Systems Engineering
Diagnostic Console - Systems Engineering
Operation firmware version: 5.74 Status: valid
Boot firmware version: 1.10
[C] Continue with standard system start up
[U] Upgrade operation firmware (XMODEM)
[S] System Debug Interface H9737
Enter Selection:
Operation firmware version: The current version of the switch firmware.
Status: Valid or invalid. If the firmware is not valid, option C is not
displayed and the following warning is displayed:
WARNING!!! Operation Firmware is invalid
Upgrade firmware to enable switch
operation.
Boot firmware version: Current version of the write-protected part of the firmware
that supports the diagnostic console.
7-8 Catalyst 2820 Series and Catalyst 1900 Series Installation and Configuration Guide
9. Diagnostic Console Recovery Procedures
[C] Continue with standard system start up. Select this option after you have resolved
the firmware problems with options [U] or [S]. It brings up the firmware as usual.
[U] Upgrade operation firmware. Select this option to initiate a firmware upgrade. This
option works with XMODEM and uses the default RS-232 parameters: 9600 baud; eight
data bits; one stop bit; parity: none. If you are using the boot version firmware 1.10 or
higher, you are prompted to choose a baud rate of 9600 or 57600 baud for the download.
[S] System Debug Interface. Select this option to display the System Debug Interface
Menu shown in Figure 7-3. You can use this menu to reset the management console RS-232
interface or the entire switch to the factory defaults.
System Debug Interface Menu
Use this menu, shown in Figure 7-3, to reset the management console RS-232 interface or
the entire switch to the factory defaults. You can also use this menu to display the
factory-installed management console password.
Figure 7-3 System Debug Interface
Diagnostic Console - System Debug Interface
[G] Generic I/O
[M] Memory (CPU) I/O
[F] Return system to factory defaults
[R] Reset main console RS232 interface to 9600,8,1,N
[V] View Management Console password
[X] Exit to Previous Menu
H9738
Enter Selection:
[G] Generic I/O. For Cisco personnel only.
[M] Memory (CPU) I/O. For Cisco personnel only.
[F] Return system to factory defaults. Use this option to return the switch to its factory
settings. All static and dynamic addresses are removed, as are the IP address and all other
configurations. Enter Y or N and press Return. The changes take effect the next time the
switch is reset.
Troubleshooting 7-9
10. Diagnostic Console Recovery Procedures
[R] Reset main console RS232 interface to 9600, 8, 1, N. Select this option if you have
lost the management console connection because of an improper modem configuration.
The next time the switch is reset, the default RS-232 configuration is used.
[V] View Management Console password. Use this option to display the factory-installed
password.
7-10 Catalyst 2820 Series and Catalyst 1900 Series Installation and Configuration Guide