VPC config example

vPC Example Configuration

The following example shows how to configure vPC on device A as shown in Figure 6-9:

Figure 6-9 vPC Configuration Example

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Step 1 Enable vPC and LACP.

switch# config t

switch(config)# feature vPC

switch(config)# feature lacp

Step 2 (Optional) Configure one of the interfaces that you want to be peer link in dedicated mode.

switch(config)# interface ethernet 7/1, ethernet 7/3, ethernet 7/5. ethernet 7/7

switch(config-if)# shutdown

switch(config-if)# exit

switch(config)# interface ethernet 7/1

switch(config-if)# rate-mode dedicated

switch(config-if)# no shutdown

switch(config-if)# exit

switch(config)#

Step 3 (Optional) Configure the second, redundant interface that you want to be peer link in dedicated mode.

switch(config)# interface ethernet 7/2, ethernet 7/4, ethernet 7/6. ethernet 7/8

switch(config-if)# shutdown

switch(config-if)# exit

switch(config)# interface ethernet 7/2

switch(config-if)# rate-mode dedicated

switch(config-if)# no shutdown

switch(config-if)# exit

switch(config)#

Step 4 Configure the two interfaces (for redundancy) that you want to be in the peer link to be an active Layer 2 LACP port channel.

switch(config)# interface ethernet 7/1-2

switch(config-if)# switchport

switch(config-if)# switchport mode trunk

switch(config-if)# switchport trunk allowed vlan 1-50

switch(config-if)# switchport trunk native vlan 20

switch(config-if)# channel-group 20 mode active

switch(config-if)# exit

Step 5 Create and enable the VLANs.

switch(config)# vlan 1-50

switch(config-vlan)# no shutdown

switch(config-vlan)# exit

Step 6 Create a separate VRF for the vPC peer-keepalive link and add a Layer 3 interface to that VRF.

switch(config)# vrf context pkal

switch(config-vrf)# exit

switch(config)# interface ethernet 8/1

switch(config-if)# vrf member pkal

switch(config-if)# ip address 172.23.145.218/24

switch(config-if)# no shutdown

switch(config-if)# exit

Step 7 Create the vPC domain and add the vPC peer-keepalive link.

switch(config)# vpc domain 1

switch(config-vpc-domain)# peer-keepalive destination 172.23.145.217 source 172.23.145.218 
vrf pkal

switch(config-vpc-domain)# exit

Step 8 Configure the vPC peer link.

switch(config)# interface port-channel 20

switch(config-if)# switchport mode trunk

switch(config-if)# switchport trunk allowed vlan 1-50

switch(config-if)# vpc peer-link

switch(config-if)# exit

switch(config)#

Step 9 Configure the interface for the port channel to the downstream device of the vPC.

switch(config)# interface ethernet 7/9

switch(config-if)# switchport mode trunk

switch(config-if)# allowed vlan 1-50

switch(config-if)# native vlan 20

switch(config-if)# channel-group 50 mode active

switch(config-if)# exit

switch(config)# interface port-channel 50

switch(config-if)# vpc 50

switch(config-if)# exit

switch(config)#

Step 10 Save the configuration.

switch(config)# copy running-config startup-config