> "When the next hop to a destination node changes, the node will
> generate a triggered notification message. The triggered notification
> message will update SAV tables and SAV graphs in nodes along the new
> path.

IMHO -- if you're going to put more information into BGP, do so as a new 
message type, rather than as yet another AF ... BGP is already heavily 
overloaded. Anything that adds to the churn of updates/etc. in BGP could 
potentially degrade the entire routing system. If you're using BGP merely as 
transport, add a new message type so the code and functionality can be largely 
separated from existing BGP mechanisms.

> " Just like packet loss from temporal loop during routing update cannot
> be completely avoided."

In link-state protocols this is true. In path-vector protocols (like BGP) and 
distance-vector protocols, you generally end up temporarily dropping traffic 
rather than looping it during convergence events.

Note that if you're relying on BGP, there are several known conditions where 
BGP will not converge--ever--and will experience serious churn. This is bound 
to happen with protocols that manage multiple metrics; all such protocols will 
be multi-stable in some way or another. During these "non-convergence events," 
you might well experience both dropping and looping traffic.

/r

_______________________________________________
rtgwg mailing list
[email protected]
https://www.ietf.org/mailman/listinfo/rtgwg

Reply via email to