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How to configure vlan
 

How to configure vlan

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How to configure vlan

How to configure vlan

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    How to configure vlan How to configure vlan Document Transcript

    • PREPARED BY RAVI KUMAR LANKE Page 1 How to Configure VLAN, STP, DTP step by step guide
    • PREPARED BY RAVI KUMAR LANKE Page 2  In this tutorial I will demonstrate that how can you  Configure Access or Trunk links  Create VLAN  Assign VLAN membership  Configure Intra VLAN routing  Configure VTP Server  Make VTP Clients  Show STP Static  Configure DTP port To complete these lab either create a topology as shown in figure or download this file and load it in packet tracer Download Advance switch configuration packet tracer file PC configurations 2960 – 24 TTL Switch 1 Configuration
    • PREPARED BY RAVI KUMAR LANKE Page 3 Devices IP Address VLAN Connected With PC0 10.0.0.2 VLAN10 Switch1 on F0/1 PC1 20.0.0.2 VLAN20 Switch1 on F0/2 PC2 10.0.0.3 VLAN10 Switch2 on F0/1 PC3 20.0.0.3 VLAN20 Switch2 on F0/2 PC4 10.0.0.4 VLAN10 Switch3 on F0/1 PC5 20.0.0.4 VLAN20 Switch3 on F0/2 Port Connected to VLAN LINK STATUS F0/1 With PC0 VLAN10 Access OK F0/2 With PC1 VLAN20 Access OK Gig1/1 With Router VLAN 10,20 Trunk OK Gig 1/2 With Switch2 VLAN 10,20 Trunk OK F0/24 Witch Switch2 VLAN 10,20 Trunk OK 2960 – 24 TTL Switch 2 Configuration F0/1 With PC0 VLAN10 Access OK F0/2 With PC1 VLAN20 Access OK Gig 1/2 With Switch1 VLAN 10,20 Trunk OK Gig 1/1 With Switch3 VLAN 10,20 Trunk OK F0/24 Witch Switch1 VLAN 10,20 Trunk Blocked F0/23 Witch Switch3 VLAN 10,20 Trunk OK 2960 – 24 TTL Switch 3 Configuration F0/1 With PC0 VLAN10 Access OK F0/2 With PC1 VLAN20 Access OK Gig 1/1 With Switch2 VLAN 10,20 Trunk OK F0/24 Witch Switch1 VLAN 10,20 Trunk Blocked Task
    • PREPARED BY RAVI KUMAR LANKE Page 4 You are the administrator at ComputerNetworkingNotes.com. company have two department sales and management. You have given three pc for sales and three pc in management. You created two VLAN. VLAN 10 for sales and VLAN20 for management. For backup purpose you have interconnected switch with one extra connection. You have one router for intera VLAN communications. Let's start configuration first assign IP address to all pc's To assign IP address double click on pc and select ip configurations from desktop tab and give ip address as shown in table given above VLAN Trunking Protocol Configure VTP Server We will first create a VTP Server so it can automatically propagate VLAN information to other switch. Double click on Switch1 and select CLI. Set hostname to S1 and create VTP domain name example and set password to vinita ( Remember password is case sensitive ). Switch 1 Switch>enable Switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#hostname S1 S1(config)#vtp mode server Device mode already VTP SERVER. S1(config)#vtp domain example Changing VTP domain name from NULL to example S1(config)#vtp password vinita Setting device VLAN database password to vinita Configure VTP clients Once you have created a VTP domain. Configure remaining Switch to Client mode. Switch 2 Switch>enable Switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#hostname S2 S2(config)#vtp mode client Setting device to VTP CLIENT mode. S2(config)#vtp domain example Changing VTP domain name from NULL to example S2(config)#vtp password vinita Setting device VLAN database password to vinita S2(config)# Switch 3 Switch>enable Switch#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Switch(config)#hostname S3 S3(config)#vtp mode client Setting device to VTP CLIENT mode. S3(config)#vtp domain example Changing VTP domain name from NULL to example S3(config)#vtp password vinita Setting device VLAN database password to vinita S3(config)#
    • PREPARED BY RAVI KUMAR LANKE Page 5 Dynamic Trunking Protocol Configure DTP port All Switch ports remain by default in access mode. Access port can not transfer the trunk frame. Change mode to trunk on all the port those are used to interconnect the switches Switch 1 S1(config)#interface fastEthernet 0/24 S1(config-if)#switchport mode trunk %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/24, changed state to down %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/24, changed state to up S1(config-if)#exit S1(config)#interface gigabitEthernet 1/1 S1(config-if)#switchport mode trunk S1(config-if)#exit S1(config)#interface gigabitEthernet 1/2 S1(config-if)#switchport mode trunk %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/2, changed state to down %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/2, changed state to up S1(config-if)#exit S1(config)# Switch 2 S2(config)#interface gigabitEthernet 1/1 S2(config-if)#switchport mode trunk %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/1, changed state to down %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/1, changed state to up S2(config-if)#exit S2(config)#interface gigabitEthernet 1/2 S2(config-if)#switchport mode trunk S2(config-if)#exit S2(config)#interface fastEthernet 0/23 S2(config-if)#switchport mode trunk %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/23, changed state to down %LINEPROTO-5-UPDOWN: Line protocol on Interface FastEthernet0/23, changed state to up S2(config-if)#exit S2(config)#interface fastEthernet 0/24 S2(config-if)#switchport mode trunk S2(config-if)#exit Switch 3 S3(config)#interface fastEthernet 0/24 S3(config-if)#switchport mode trunk S3(config-if)#exit S3(config)#interface gigabitEthernet 1/1 S3(config-if)#switchport mode trunk S3(config-if)#exit
    • PREPARED BY RAVI KUMAR LANKE Page 6 Virtual LAN (VLAN) Create VLAN After VTP server configuration its time to organize VLAN. We need only to create VLAN on VTP server and reset will be done by VTP Server automatically. Switch 1 S1(config)#vlan 10 S1(config-vlan)#exit S1(config)#vlan 20 S1(config-vlan)#exit S1(config)# As we have already configure VTP server in our network so we don't need to create VLAN on S2 or S3. We need only to associate VLAN with port. Assign VLAN membership Switch 1 S1(config)#interface fastEthernet 0/1 S1(config-if)#switchport access vlan 10 S1(config-if)#interface fastEthernet 0/2 S1(config-if)#switchport access vlan 20 Switch 2 S2(config)#interface fastEthernet 0/1 S2(config-if)#switchport access vlan 10 S2(config-if)#interface fastEthernet 0/2 S2(config-if)#switchport access vlan 20 Switch 3 S3(config)#interface fastEthernet 0/1 S3(config-if)#switchport access vlan 10 S3(config-if)#interface fastEthernet 0/2 S3(config-if)#switchport access vlan 20 Now we have two working vlan. To test connectivity do ping form 10.0.0.2 to 10.0.0.3 and 10.0.0.4. if you get successfully replay then you have successfully created VLAN and VTP server. Spanning-Tree Protocol In this configuration STP will block these ports F0/24 of S1 , F0/23 and F0/24 of S2 and F0/24 of S3 to avoid loop at layer to two. Verify those ports blocked due to STP functions Verify STP ports Switch 2 S2#show spanning-tree active VLAN0001 Spanning tree enabled protocol ieee Root ID Priority 32769 Address 0002.174D.7794 Cost 4 Port 26(GigabitEthernet1/2) Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Bridge ID Priority 32769 (priority 32768 sys-id-ext 1) Address 00D0.FF08.82E1 Hello Time 2 sec Max Age 20 sec Forward Delay 15 sec Aging Time 20
    • PREPARED BY RAVI KUMAR LANKE Page 7 Interface Role Sts Cost Prio.Nbr Type ---------------- ---- --- --------- -------- --------------------------- Fa0/1 Desg FWD 19 128.1 P2p Fa0/2 Desg FWD 19 128.2 P2p Fa0/23 Desg FWD 19 128.23 P2p Fa0/24 Altn BLK 19 128.24 P2p Gi1/1 Desg FWD 4 128.25 P2p Gi1/2 Root FWD 4 128.26 P2p [Output is omitted] S2# You can test STP protocols status on S1 and S3 also with show spanning-tree active command Router on Stick At this point of configuration you have two successfully running VLAN but they will not connect each other. To make intra VLAN communications we need to configure router . To do this double click on router and select CLI. Configure intra VLAN Router Router>enable Router#configure terminal Enter configuration commands, one per line. End with CNTL/Z. Router(config)#interface fastEthernet 0/0 Router(config-if)#no ip address Router(config-if)#no shutdown Router(config-if)#exit Router(config)#interface fastEthernet 0/0.10 Router(config-subif)#encapsulation dot1Q 10 Router(config-subif)#ip address 10.0.0.1 255.0.0.0 Router(config-subif)#exit Router(config)#interface fastEthernet 0/0.20 Router(config-subif)#encapsulation dot1Q 20 Router(config-subif)#ip address 20.0.0.1 255.0.0.0 Router(config-subif)#exit To test connectivity between different vlan do ping form any pc to all reaming pc. it should be ping successfully. If you have error download this configured topology and cross check that where you have committed mistake. Configured VLAN VTP STP topology
    • PREPARED BY RAVI KUMAR LANKE Page 8 VLAN VTP Server STP DTP command reference sheet Switch(config)#vlan 10 Creates VLAN 10 and enters VLAN configuration mode for further definitions. Switch(config-vlan)#name Sales Assigns a name to the VLAN. The length of the name can be from 1 to 32 characters. Switch(config-vlan)#exit Applies changes, increases the revision number by 1, and returns to global configuration mode. Switch(config)#interface fastethernet 0/1 Moves to interface configuration mode Switch(config-if)#switchport mode access Sets the port to access mode Switch(config-if)#switchport access vlan 10 Assigns this port to VLAN 10 Switch#show vlan Displays VLAN information Switch#show vlan brief Displays VLAN information in brief Switch#show vlan id 10 Displays information about VLAN 10 only Switch#show vlan name sales Displays information about VLAN named sales only Switch#show interfaces vlan x Displays interface characteristics for the specified VLAN Switch#delete flash:vlan.dat Delete filename [vlan.dat]? Delete flash:vlan.dat? [confirm] Switch# Removes the entire VLAN database from flash. Make sure there is no space between the colon (:) and the characters vlan.dat. You can potentially erase the entire contents of the flash with this command if the syntax is not correct. Make sure you read the output from the switch. If you need to cancel, press ctrl+c to escape back to privileged mode: Switch(config)#interface fastethernet 0/5 Moves to interface configuration mode. Switch(config-if)#no switchport access vlan 5 Removes port from VLAN 5 and reassigns it to VLAN 1—the default VLAN. Switch(config-if)#exit Moves to global configuration mode. Switch(config)#no vlan 5 Removes VLAN 5 from the VLAN database. Switch#copy running-config startupconfig Saves the configuration in NVRAM Switch(config-if) #switchport mode trunk Puts the interface into permanent trunking mode and negotiates to convert the
    • PREPARED BY RAVI KUMAR LANKE Page 9 link into a trunk link. Switch(config)#vtp mode server Changes the switch to VTP server mode. Switch(config)#vtp mode client Changes the switch to VTP client mode. Switch(config)#vtp mode transparent Changes the switch to VTP transparent mode. Switch(config)#no vtp mode Returns the switch to the default VTP server mode. Switch(config)#vtp domain domain-name Configures the VTP domain name. The name can be from 1 to 32 characters long. Switch(config)#vtp password password Configures a VTP password . Switch(config)#vtp pruning Enables VTP pruning Switch#show vtp status Displays general information about VTP configuration Switch#show vtp counters Displays the VTP counters for the switch