VLAN scenario

This scenario shows how to assign VLAN IDs to access and trunk interfaces for the following deployment:

On the 6400 Switch Series, interface identification differs.

In this scenario, VLANs are used to isolate the traffic from different devices.

  • VLAN 25 carries tagged and untagged traffic from computers connected to switch B.
  • VLAN 4 carries tagged traffic from computers connected to switch B.
  • VLAN 6 carries tagged and untagged traffic from computers connected to switch C.
  • VLAN 17 carries tagged traffic from computers connected to switch C.

  • VLAN 100 carries untagged traffic from the server.

Procedure
  1. Execute the following commands on switch A and B.
    1. Create VLANs 4 and 25. 
      switch#configswitch(config)#vlan 4,25
    2. Define LAG1and assign the VLANs to it. 
      switch(config)#interface lag 1switch(config-lag-if)#no shutdownswitch(config-lag-if)#vlan trunk native 25switch(config-lag-if)#vlan trunk allowed 4,25
    3. Add ports1/1/1and1/2/1to LAG1. 
      switch(config-lag-if)#interface 1/1/1switch(config-if)#no shutdownswitch(config-if)#lag 1switch(config-if)#interface 1/2/1switch(config-if)#no shutdownswitch(config-if)#lag 1
  2. Execute the following commands on switch A and C.
    1. Create VLANs 6 and 17. 
      switch#configswitch(config)#vlan 6,17
    2. Define LAG 3 and assign the VLANs to it. 
      switch(config)#interface lag 3switch(config-lag-if)#no shutdownswitch(config-lag-if)#vlan trunk native 6 tagswitch(config-lag-if)#vlan trunk allowed 6,17
    3. Add ports1/1/13and1/2/13to LAG 3. 
      switch(config-lag-if)#interface 1/1/13switch(config-if)#no shutdownswitch(config-if)#lag 3switch(config-if)#interface 1/2/13switch(config-if)#no shutdownswitch(config-if)#no routingswitch(config-if)#lag 3
  3. Execute the following commands on switch A to configure the connection to the server.
    1. Configure interface1/2/13as an access interface with VLAN ID set to 100. 
      switch#configswitch (config)#vlan 100switch(config-vlan-100)#interface 1/2/32switch(config-if)#no shutdownswitch(config-if)#vlan访问100switch(config-if)#exit
  4. Verify VLAN configuration by running the commandshow vlan. For example: 
    switch#show vlan-------------------------------------------------------------------------------------------------------------- VLAN Name Status Reason Type Interfaces -------------------------------------------------------------------------------------------------------------- 1 DEFAULT_VLAN_1 down no_member_port default 4 VLAN4 up ok static lag1 6 VLAN6 up ok static lag3 17 VLAN17 up ok static lag3 25 VLAN25 up ok static lag1 100 VLAN100 up ok static 1/2/32
  5. Verify that the connection to the DHCP server is sending/receiving data with the command显示界面. Check that theRxandTxfields are incrementing. For example: 
    switch#显示界面1/2/32Interface 1/2/32 is up Admin state is up Description: Hardware: Ethernet, MAC Address: 70:72:cf:3a:8a:0b MTU 1500 Type SFP+LR qos trust none Speed 10000 Mb/s Auto-Negotiation is off Input flow-control is off, output flow-control is off VLAN Mode: access Access VLAN: 100 Rx 20 input packets 1280 bytes 0 input error 0 dropped 0 CRC/FCS Tx 9 output packets 1054 bytes 0 input error 0 dropped 0 collision
  6. Verify LAG interface configuration with the command显示界面. Check the fields admin state, MAC address, Aggregated-interfaces, VLAN Mode, Native VLAN, Allowed VLAN, Rx count, and Tx count. For example: 
    switch#显示界面lag1Aggregate-name lag1 Description : Admin state : up MAC Address : 94:f1:28:21:63:00 Aggregated-interfaces : 1/1/1 1/2/1 Aggregation-key : 1 Speed 1000 Mb/s L3 Counters: Rx Disabled, Tx Disabled qos trust none VLAN Mode: native-untagged Native VLAN: 25 Allowed VLAN List: 4,25 Rx 10 input packets 1280 bytes 0 input error 0 dropped 0 CRC/FCS Tx 8 output packets 980 bytes 0 input error 0 dropped 0 collision
    switch#显示界面lag3Aggregate-name lag3 Description : Admin state : up MAC Address : 94:f1:28:21:63:00 Aggregated-interfaces : 1/1/13 1/2/13 Aggregation-key : 3 Speed 1000 Mb/s L3 Counters: Rx Disabled, Tx Disabled qos trust none VLAN Mode: native-tagged Native VLAN: 6 Allowed VLAN List: 6,17 Rx 19 input packets 1280 bytes 0 input error 0 dropped 0 CRC/FCS Tx 15 output packets 1000 bytes 0 input error 0 dropped 0 Collision
  7. Verify the physical interfaces (1/1/1, 1/2/1, 1/1/13, 1/2/13) with the command显示界面. Check that theRxandTxfields are incrementing. For example: 
    switch#显示界面1/1/1接口1/1/1up Admin state is up Description: Hardware: Ethernet, MAC Address: 94:f1:28:21:73:ff MTU 1500 Type SFP+LR qos trust none Speed 1000 Mb/s Auto-Negotiation is off Input flow-control is off, output flow-control is off Rx 6 input packets 620 bytes 0 input error 0 dropped 0 CRC/FCS Tx 4 output packets 422 bytes 0 input error 0 dropped 0 collision