[rbak-nsp] IS-IS P2P interfaces

[Ian Calderbank]

don't use ISIS :-)
seriously, this is the only way to do it, there is no way to change 
interface type without delete and recreate.

if you do it all in one go and get it right first commit , you may not get 
much of an outage (I assume its a live interface is why you're wary of 
deleting) but you're bound to drop something.

I'd do it in a network maintenance window.

cheers
Ian

> ----------------------------------------------------------------------
>
> Message: 1
> Date: Mon, 26 Oct 2009 16:41:37 +0000
> From: Mariano Juli? <mjuliaq at gmail.com>
> To: redback-nsp at puck.nether.net
> Subject: [rbak-nsp] IS-IS P2P interfaces
> Message-ID:
> <49c8ec960910260941y1c67fa6ga64ad0b2684bda3b at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> Hi everyone,
>
> I'm trying to configure all my IS-IS interfaces as p2p links in order to
> avoid an ugly bug with non-p2p ISIS links on our target upgrade release
> (6.1.3.7)
>
> There seems to be no command like "network point-to-point" and the
> documentation shows this example for p2p;
>
> [local]Redback(config)#context local
> [local]Redback(config-ctx)#interface lo0 loopback
> [local]Redback(config-if)#ip address 10.1.1.1/32
>
> [local]Redback(config-ctx)#interface to-core2 p2p
> [local]Redback(config-if)#ip unnumbered lo0
>
> [local]Redback(config-ctx)#router isis my-backbone
> [local]Redback(config-isis)#net 47.0001.1111.2222.3333.00
> [local]Redback(config-isis)#interface to-core2
>
> The config implies that the ip interface itself needs to be declared as 
> p2p,
> which means that if the interface already exits it has to be removed 
> first.
>
> I'm hoping there is another to declare IS-IS interfaces as p2p without
> having to erase them.
>
> How do others here manage this situation?
>
> Regards,
>
> Mariano
>