Juniper Switch Overview


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Juniper Ethernet switching overview. Juniper EX series switch and Junos advantages.

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Juniper Switch Overview

  1. 1. Juniper Networks Ethernet Switching For The Enterprise Igxglobal has embraced the Juniper enterprise vision of consolidating and simplify the network architecture. This will ensure that modern enterprise network architectures reduce their total cost of ownership through the reduction in power, cooling and facility requirements. For the last 10 years, the dominant vendor of campus switches, has been selling the same devices and architectures into the Local Area Network without any real innovation in technology. The infrastructure LAN is then typically comprised of three tiers, * Access * Distribution * Core Advanced features like MPLS and Multicast are either not supported or perform to the scale required for high performance LAN capability. Security is an after thought – usually ending up with a band aid approach, with security deployed across the aggregation layer consuming lots of power and space. Nearly all current LAN architectures will look something like the variation of this network shown. Access Switch Distribution Switch Core Router Normally designed and installed over several years , the multiple tiered network design falls short of delivering the perform- ance, scalability, and wire speed port density required of today’s converged networks. Multiple tiered designs add consider- able procurement costs, complexity , and are expensive to run and operate. Within this tiered architecture, normally a differ- ent operating system also needs to be deployed within each layer.
  2. 2. Juniper EX Series Switch In The Campus Igxglobal with Juniper Networks EX series switches can deliver next generation switching technology for today and tomorrow’s campus networks. The EX series switch can offer carrier grade reliability and performance , whilst reducing the total cost of ownership (TCO). High Availability: The Juniper EX switch within the campus design allows for the high availabil- ity and carrier class reliability of modular systems to be combined with the flexibility of virtual platforms. This combination delivers a high performance, scalable solution for the enter- prise network, campus, and branch office environments. With the EX series switch businesses can deploy a cost effective family of switches that deliver High Availability (HA), Unified Communications, Inte- grated Security, and operational simplicity. With Virtual Chassis technology eliminates the problems encountered with current complex enterprise switching networks, by using high performance application specific ASIC system architecture and JUNOS software. Network Virtualisation: The EX series switch features Juniper Networks Virtual Chassis technology which enables up to 10 EX4200 switches to be in- terconnected and operate as a single system. Unlike other vendor systems this 1U high switch can also use its 1Gigabit Ethernet or 10Gigabit Ethernet fiber uplink ports to interconnect between the Virtual Chassis elements. This enables office buildings to deploy the EX4200 access switches on multiple floors, and interconnect them too act as one Virtual System. A virtual chassis gives the reliability, availability, and high port density of traditional modular chassis based systems. With a Virtual Chassis the enterprise LAN can add switches into the virtual system as the network grows, giving true “Pay as You Grow” capability. Lowering TCO The “Pay As You Grow” design of the virtual chassis reduces the overall cost of running the enterprise design. Traditional fixed chassis designs are expensive to run, they require lots of power and more cooling. The virtual chassis uses less power and less cooling, due to the fact each switch is only 1U high. With the addition of switches as you need them , the power and cooling usage is reduced significantly.
  3. 3. EX2200 Ethernet Switch Available Q1 2010 The EX2200 brings a small factor Layer 2 and Layer 3 switch with reliability of JUNOS. Aimed at the entry level access requirement of the high performance business network. Four platform configurations are available for the EX2200, offering 24 and 48 port 10/100/1000 BaseT ports, with Power Over Ethernet optional capability. The 24 and 48 port POE switches support the 802.3af standards, based on POE on every port supporting network devices such as IP Phones and wireless LAN access points. EX2200 Features: The EX2200 is designed for access point connectivity where the use of certain routing protocols are not required, however the capability of static routing , RIP and full Layer 2 protocol support is necessary.  Four front-panel small form-factor pluggable transceivers (SFP) Gigabit Ethernet uplink ports. These pluggable optics provide high speed connectivity to aggregation layer switches or other upstream devices.  Fixed, low consumption power supply and fans ensure operational simplicity and a lower OPEX cost.  Integrates with the Juniper Unified Access Control (UAC) to provide per user access control and policing.  Support for Layer 2 protocols as well as RIP and Static Routing is within the Base Operating License.  Optional Enhanced Feature License for supporting OSPF and PIM.  Single release train for Juniper Networks JUNOS software ensures consistent con- trol plane features, and new feature imple- mentation.  Modular JUNOS software prevents a switch reboot on the event of a system process failure.  Managed through a single application , Juniper Network and Security Manager (NSM).
  4. 4. EX3200 Series Ethernet Switch The EX3200 switching platform is a 1RU standalone solution for low density access deployments. These switches are expected to be deployed in the wiring closets of branch or remote offices, and large office buildings. EX3200 Features:  Full Layer-2 and Layer-3 switching functionality is supported, including OSPF, and RIPv2 in the JUNOS operating system Base License.  There are four EX3200 switching platforms, encompassing 24 and 48 port 10/100/1000 Base-T ports. These switches can be designated as partial or full power over Ethernet (POE) capable. POE capability enables the support of IP enabled devices such as, IP desk telephones, video cameras and wireless LAN (wLAN) access points.  All POE ports are full 15.4 watt , Class-3 POE ports. This makes the EX3200 an ideal entry level platform for supporting modern day enterprise networks.  The base EX3200 switch , either 24 port or 48 port, comes with the partial eight POE ports as standard. These POE capable ports are ports numbered 1 through 8 , and are identified by the port number being a different colour from the remaining standard ports. There are no restrictions on these POE ports.  The switch supports an optional four port Gigabit Ethernet (Gbe) or two port 10Gigabit (10Gbe) uplink modules with pluggable optics.  The fan tray and power supply are field replaceable (FRU), replacing the fan tray has no impact on the POE ports if activated, for a limited time duration.  As per the carrier class routing platforms, the EX3200 control and forwarding planes are separated and supports the modular JUNOS operating system.  The packet forwarding engine (PFE) has an integrated purpose built ASIC, the EX-PFE enables wire rate fowarding, even when all control plane features are enabled.  The EX3200 switch uses 190 watts of power for normal switching functionality.
  5. 5. EX4200 Line of Ethernet Switch With Virtual Chassis Technology The EX4200 switch with virtual chassis technology, allows for the high availability and carrier class reliability of modular systems to be combined with the flexibility of stackable platforms. This combination delivers a high performance, scalable solution for enterprise network, campus, and branch office environments. EX4200 Features:  full Layer-2 and Layer-3 switching capabilities, the EX4200 switch provides a high density access and Gigabit Ethernet (Gbe) aggregation platform , that meets the requirements of modern high performance enterprise networks.  The virtual chassis technology enables up to ten switches to be interconnected and managed as a single device.  With a virtual chassis solution deployed, carrier grade high availability features can be utilised within the enterprise network.  When two EX4200 switches are interconnected as a virtual chassis, the JUNOS software enables the ability for the multiple route engines to deliver Graceful Route Engine Switchover (GRES), and Layer-2 non stop forwarding in the event of the route engine failing.  Graceful Route Engine Switchover allows the virtual chassis to ensure the reliability within the access switching environment, normally only found in chassis based platforms used for aggregation at the distribution and core areas of the network.  The switch has optional Gigabit Ethernet (Gbe) and 10Gigabit Ethernet (10Gbe) uplink modules, enabling high speed connections too aggregation or core switches.  As with the EX3200 , the EX4200 switch has partial or full POE port capability, delivering full 15.4W Class 3 POE ports.  The EX4200 also can be provisioned as a twenty four port 100Base-FX / 1000Base-X SFP modular switch. EX4200 Access Port POE Height Switch Power Model Configuration Ports Including POE ports 320W AC EX4200-24T 24 10/100/1000 8 1RU 190W + 8 X 15.4W Base-T 600W AC EX4200-24P 24 10/100/1000 24 1RU 190W + 24 X 15.4W Base-T 320W AC EX4200-24F 24 100Base-FX / N/A 1RU 190W 1000Base-X SFP 320W AC EX4200-48T 48 10/100/1000 8 1RU 190W + 8 x 15.4W Base-T 930W AC EX4200-48P 48 10/100/1000 48 1RU 190W + 48 x 15.4W Base-T
  6. 6. EX4200 Virtual Chassis Virtual Chassis Features:  Two or more (up to 10 ) EX 4200 series switches interconnected via virtual-chassis backplane cables or extended via GbE and 10GbE uplinks operating as a single Juniper chassis switch  Single management interface, single JUNOS software version, single copy of configuration, and chassis-like slot/module/port numbering scheme.  Simplified Network Design: Single network entity, single control plane, link aggregation across virtual chassis members.  Superior Resiliency: Redundant master and backup Route Engines (REs), redundant switch backplane and power/fan modules.  Flexibility to add more virtual chassis elements as port density grows, add more 10GbE uplinks, mix and match switch types , true pay as you grow.  Superior Performance at a lower entry price point with simplified distributed forwarding switch architecture, and low power consumption.  128Gbps backplane across 10 x interconnected switches. Route Engine Switchover: The virtual chassis elects a master route engine and standby route engine, with all other remaining switches acting as line cards. If the standby route engine detects a problem with the master route engine, it automatically assumes the master route engine role. One of the line card switches will assume the standby route engine role , ensuring continuos high availability for the virtual chassis. The physical ports on the failed master route engine switch will remain active and will continue to forward data, this because the control plane has moved to the new master route engine switch.
  7. 7. EX4200 Virtual Chassis Virtual Chassis With Fibre Uplink Module Connectivity : Junipers EX4200 Virtual Chassis technology has the ability to use the fiber uplink ports to interconnect the switches within the Virtual Chassis. This unique feature enables the enterprise network that is spread across multiple floors within an office environment, to still have the capability of the Virtual Chassis and all the benefits of high availability (HA). Unified Communications: This enables the modern unified network , with VOIP phones, wireless access, and PC desktops to benefit from the HA features not normally found within the access layer of the enterprise network. Using the EX4200 Virtual Chassis for the unified network access connectivity removes the need for complex Layer2 network designs, protocols, and separate switching layers per user or office floor. The reduction in the access switching footprint helps to lower the Total Cost of Ownership (TCO) for the access network, which will in turn also reduce the Operational Expenditure (OPEX). With the combination of partial POE ports and full POE ports on the individual switch, the EX series switches can be used to interconnect POE capable wireless devices. Enabling wireless LAN connections to be powered directly from the access switch. To ease deployments for the converged networks LAN, the EX series switch supports the Link Layer Discover Protocol (LLDP) and the LLDP Media Endpoint Discovery Protocol (LLDP-MED). This enables the EX series switch to automatically detect Ethernet enabled devices, determine their power requirements, and assign VLAN parameters. The EX series switch also fully integrates into the Juniper Unified Access Control (UAC) solution. This enables the EX switch to be fully protected , enabling LAN administrators to consolidate all aspects of a users identity, device, and location. Enforcing access and security controls down to the individual port or access user level.
  8. 8. The JUNOS Advantage For Enterprise Switching EX Switch Architecture Overview: The EX switch is based on the same architectural principles as the carrier grade routers, all Juniper platforms follow the same rule of separation for the control and forwarding plane. This separation of the control and forwarding planes results in the architecture of the platform having two major components, the Routing Engine (RE) and Packet Forwarding Engine (PFE). The Routing Engine (RE) is the control plane of the EX switching platform, and is responsible for protocol updates and system management. This is also where the JUNOS operating system resides. The RE runs various protocols and system processes that reside inside a protected memory environment. Based on the PowerPC architecture , the RE maintains the routing table, bridging table and primary forwarding table. An internal link connects the RE to the Packet Forwarding Engine (PFE), via which the RE pushes a copy of the pri- mary forwarding table to the PFE, and the PFE sends protocol control packets to the RE. The PFE is responsible for forwarding transitive packets through the switch. The PFE is implemented using ASIC’s on the EX switching plat- form. Separation of the control and forwarding plane ensures superior performance and highly reliable JUNOS Operating System: JUNOS OS follows three simple principles,  One operating system  One release  One architecture This is called the 3 x 1 principle, and is the underlying foundation of the Juniper operating system and platform architecture. With this architectural foundation utilised in the EX switch platform, the benefits of a carrier grade network operating system can be deployed within new high performance enterprise networks. The JUNOS OS is based on a modular system, This modular approach to the operating system ensures operating processes are isolated from one another, which allows for further expansion and enhancements to be added into the JUNOS OS with ease. Any operating process that maybe encountering some kind of event, due to its isolation from the other operating processes, does not effect any other running process. The underlying kernel of the JUNOS OS is FreeBSD, chosen because it is a tried and tested operating system in its own right, and allowed for the JUNOS operating system to be build on a rock solid foundation.
  9. 9. The JUNOS Advantage For Enterprise Switching JUNOS Operating System cont.. The JUNOS operating system code is released quarterly, during the second month of each quarter. Normally the first version of the new JUNOS operating system will have new features and enhancements. Any release after this , or version 2 of the main software code release number will be for bug fixes, that are needed within the new software code release. Forwarding and Control Plane High Level Architecture: The RE is the control plane, the operational decision making process is done here for the EX switch. The control plane handles all switching and routing protocol processes, as well as other software processes that control the switch’s interfaces, the chassis components, system management and user CLI access. The control plane process runs on top of the Junos OS kernel as the kernel interacts with the PFE over an internal link. The PFE sends all switching and routing protocol packets from the network to the RE, in turn the RE sends a copy of the master Bridg- ing Table and Forwarding Table to the PFE . The Forwarding Table is made up from the Routing Table (RT) which is populated by the routing protocols. With the Routing Engine copying the Bridging Table and Forwarding Table to the PFE, the PFE never has to consult the RE for packet forwarding decisions. This greatly increases the speed of which packets can be handled and forwarded through the EX switching platform.
  10. 10. About Igxglobal UK Igxglobal UK Ltd is a highly respected Network Infrastructure and Integration specialist organization. A Juniper Networks Elite partner within the UK, with extensive Enterprise and Service Provider network deployment, design, and support experience. With its varied vendor partners, igxglobal UK Ltd looks towards next generation design innovation. Embracing low latency next generation design methodology and concepts for Enterprise, Service Provider, and Media organizations. A specialist security company , igxglobal UK Ltd has extensive experience in firewall migration methodology, PCI-DSS audit, UAC, IDP, and other security enhancing technologies. Contact Information Igxglobal UK Ltd 33 Throgmorton Street London EC2N 2BR Email : Telephone : +44 (0) 207 156 5064