[e2e] Can feedback be generated more fast in ECN?

Eric A. Hall ehall at ehsco.com
Wed Feb 21 11:42:04 PST 2001


Christian Huitema wrote:
> 
> Then, there is this little detail that if the sender is behind a NAT, or
> a firewall, it will probably not receive the ICMP/SQ packets...

SQ messages are structurally identical to Time Exceeded and Destination
Unreachable messages. Is your firwall/NAT incapable of mapping TE and DU
messages to internal flows or systems? If so, how do you do traceroutes,
and how do you handle PMTUd?

If your systems are in fact capable of handling TE and DU messages, why
would they be incapable of handling SQ messages?

-- 
Eric A. Hall                                        http://www.ehsco.com/
Internet Core Protocols          http://www.oreilly.com/catalog/coreprot/



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