1841 Cisco Router GRE Tunnel Key, Checksum and Sequence

[r20039r20039]

Hi Folks

How can I add key id, sequence and checksum in GRE tunnel configuration for Cisco 1841 Router?

Can I do it in CLI and in GUI(SDM)? How?

steps please

[r20039r20039]

I guess these are the commands according to this cisco document but where and when would these three commands needed to be given?

Router(config-if)# tunnel key key-number
  Configures a tunnel identification key.

Router(config-if)# tunnel checksum
  Configures end-to-end checksumming.

Router(config-if)# tunnel sequence-datagrams
  Configures a tunnel interface to drop out-of-order datagrams.

[Richard Burts]

Yes those look like the commands to enable those features. At the risk of being overly simplistic the answer to where you do it is that you do it in tunnel config mode for that tunnel. And when you do it would be when  you determine that the feature is needed on that tunnel.

These features are not commonly used on tunnel interfaces in my experience.

HTH

Rick