Configuring an MD5 password and authentication change hold time for an OSPFv2 interface

1. Enter the configure terminal command to access global configuration mode.
   

   device# configure terminal

2. Enter the interface command and specify an interface.
   

   device(config)# interface ethernet 1/1

3. Enter the ip ospf md5-authentication command with the key-activation-wait-time parameter, and specify a time interval, to set the time that OSPFv2 waits before activating a new MD5 key.
   

   device(conf-if-eth-1/1)# ip ospf md5-authentication key-activation-wait-time 240

4. Enter the ip ospf md5-authentication command with the key-id and key parameters to set the MD5 key ID and a password.
   

   device(conf-if-eth-1/1)# ip ospf md5-authentication key-id 22 key myospfpassword

   

   Note

   MD5 passwords cannot have ASCII character 32 ('SPACE') as a part of the password string.

The following example sets the time that OSPFv2 waits before activating a new MD5 key to 240 seconds on an Ethernet interface, and sets the MD5 key ID to 22 and a password “myospfpassword” on an Ethernet interface.

device# configure terminal
device(config)# interface ethernet 1/1
device(conf-if-eth-1/1)# ip ospf md5-authentication key-activation-wait-time 240
device(conf-if-eth-1/1)# ip ospf md5-authentication key-id 22 key myospfpassword