Subject: route insertion into Forwarding table..

From: alok <[email-masked]>
Date: Fri, 11 Apr 2003 18:28:25 +0530

Greetings,

There is something which has been confusing me for quite a while now,

If a router receives an update from a neighbour, informing it of some change
in topology,

or if one assumes that there is a "router coming up with some existing
entries in the forwarding table",

"when" is this new route put into the forwarding table?

in other words, when is the new route treated as "valid"?

Is it as soon as SPF calculations are done or is it after an LSack is sent?

What is the exact sequence?

update----SPF----ack---FT

or

update---SPF----FT---ack

Thanking you for your help,
Alok