The MPLS WG Archive

["Sandeep S" <san_101@hotmail.com>]

Thanks Rajeev. One more question - So if 
PATHTEAR/RESVTEAR/PATHERROR/RESVERROR messages are set with ACK bit and the 
peer replies with a NACK/ACK, cuz it is not a reliable exchange or as we 
don't care about it being received by next-hop or not, these ACKs or NACKs 
would be dropped or would never matter even if we don't get them

-Sandeep


>SRefresh msgs can used only if the corresponding PATH/RESV trigger msgs
>have been sent with MSG_ID objects. That's how you can associate the
>states..
>
>MSG_ID_ACK/NACK can be either sent in seperate msgs or piggybacked in
>other msgs..
>
>Bundle msgs are always addressed to the immediate RSVP peer. The
>sub-msgs contained inside the bundle msgs are themselves complete msgs
>with their own rsvp header..
>
>with regards,
>Rajeev
>
>-----Original Message-----
>From: Sandeep S [mailto:san_101@hotmail.com]
>Sent: Thursday, November 01, 2001 1:50 PM
>To: mpls@UU.NET
>Subject: questions related to Refresh reduction
>
>
>Hello,
>
>Are MsgIds used only for stable states refresh messages or also for
>trigger
>messages. RFC2961 mentions using for any RSVP message - would mean they
>are
>used for PATHTEAR, RESVTEAR etc.
>
>Suppose I have setup-
>
>Node1 ----- Node2 ------ Node3 ------ Node4
>
>Both bundling and msgids used only between Node2 and Node3. I have one
>lsp
>from Node1 to Node 4 and it is in stable state. Now I setup one more lsp
>
>from Node1 to Node4. PATH message for this new lsp reaches Node2 and it
>suppose happens to coincide at the same time as Node2 is sending its
>Summary
>refresh for the first lsp. Cuz of bundling would this ACK be
>piggy-backed on
>the trigger PATH for the new lsp. If so would the destination IP of
>bundled
>packet be changed to next-hop of Node3 or would it still be Node4 (cuz
>PATH
>is being sent to Node4)
>
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