Subject: Router Alert Label

From: "Rajesh R A" <[email-masked]>
Date: Mon, 27 Jan 2003 12:39:05 +0530

Hi,

I am in need of a few clarifications regarding the use of Router Alert Label. 

Can the Router Alert label be the only label in the MPLS packet :-/  If yes, is the packet now IP switched (assuming the packet is an MPLS encapsulated IP packet)

Thanks in anticipation,
Rajesh

Adrian Rosoga wrote:

> Hi.
>
> I would like to know whether MPLS Router Alert option is used in any
> existing product and for what purpose.
>
> When receiving a Router Alert packet, options would be:
>
> 1) drop the packet - for the lazy guys
> 2) forward the packet based on the next label but do not process the
> packet
> 3) forward the packet and send a copy locally - as in the specs
>
> Is it good to use option 1? Would it any interoperability problem in
> this case? Does Cisco, Juniper use Router Alert?
>
> Cheers,
> Adrian