topic Re: Changing mask for vIP of the clustered VTI interfaces in General Topics

Changing mask for vIP of the clustered VTI interfaces

Vladimir — Sun, 31 Jan 2021 18:53:23 GMT

We are trying to establish the communication with the peer that provided /30 network for the dynamic routing via VPN.

As we have a cluster on our side, we have to create the vIP to assign the address specified by the peer.

When "Get interfaces" is performed to ingest the VTIs, the mask that is assigned to the vIP is /32 and while the field for the mask looks like it is editable, we cannot change it to /30.

Please suggest how this could be accomplished.

Thank you.

Re: Changing mask for vIP of the clustered VTI interfaces

PhoneBoy — Mon, 01 Feb 2021 03:17:02 GMT

Technically a VTI is a point-to-point interface.
That means it doesn't really have a subnet mask, but just a remote end.
That would suggest /32 is correct.

Re: Changing mask for vIP of the clustered VTI interfaces

Vladimir — Mon, 01 Feb 2021 03:52:32 GMT

Not really. Traditional P2P links were /30.

Take a look at this excerpt from Cisco:

Re: Changing mask for vIP of the clustered VTI interfaces

PhoneBoy — Mon, 01 Feb 2021 07:18:25 GMT

Not disagreeing that it can't be done that way (though a /30 wastes two addresses).
What does ifconfig for the interface say?