Configuring HMAC-SHA-1 or HMAC-SHA-256 on an OSPFv2 Virtual Link

To configure HMAC-SHA-1 or HMAC-SHA-256 authentication on an OSPFv2 virtual link, complete the following steps.
  1. Enter the configure terminal command to access global configuration mode. 
    device# configure terminal
  2. Enter the ip router-id command to specify the required router. 
    device(config)# ip router-id 10.1.1.1
  3. Enter the router ospf command to enter OSPFv2 configuration mode and enable OSPFv2 on the device. 
    device(config)# router ospf
  4. Enter the area area-ID virtual-link virtual-link-address authentication command, with the required authentication option and parameters. The following example enables HMAC-SHA-1 authentication with the key ID 10 and key string "mypasswordkey". 
    device(config-ospf-router)# area 1 virtual-link 20.1.1.1 authentication hmac-sha-1 key-id 10 key mypasswordkey

The following example enables HMAC-SHA-1 authentication using the key ID 10 and key string "mypasswordkey" on the specified virtual link. 

device# configure terminal
device(config)# ip router-id 10.1.1.1
device(config)# router ospf
device(config-ospf-router)# area 1 virtual-link 20.1.1.1 authentication hmac-sha-1 key-id 10 key mypasswordkey
Parent topic: OSPFv2 authentication configuration