9 Feb
2011
9 Feb
'11
6:26 p.m.
Unless every packet you emit is ¾ the minimum MTU (1280), then, you need to be able to receive TOOBIG messages.
Can you think of a packet type I will emit from my publically numbered backbone interface which may solicit a TOOBIG that I'll have to care about? I can only think of three cases, all ICMP: 1. An unreachable of some kind (I don't care if this is delivered or not, and why would I be sending them from the backbone? Even rate-limited? If I send them at all this is the responsibility of the edge) 2. A Time Exceed, again, don't care if this is delivered or not 3. A TOOBIG, if I'm getting a TOOBIG in response to my TOOBIG then we all have bigger problems to worry about :) Dave.
Owen
-- David Freedman Claranet http://www.clara.net