Configuring Plain Text Authentication on an OSPFv2 Virtual Link

To configure plain text 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 plain-text command, specifying the required plain text key string. 
    device(config-ospf-router)# area 1 virtual-link 20.1.1.1 authentication plain-text mystring

The following example enables plain text authentication using the key string "mystring" 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 plain-text mystring
Parent topic: OSPFv2 authentication configuration