Re: distributed natd

From: Krzysztof Zaraska (kzaraska@student.uci.agh.edu.pl)
Date: 08/11/01 

Date: Sat, 11 Aug 2001 16:38:22 +0200 (CEST)
From: Krzysztof Zaraska <kzaraska@student.uci.agh.edu.pl>
To: John Van Boxtel <jvb@whoowl.com>

> Keeping with the above ping pong idea, maybe instead of icmp packets you can
> stick with TCP and have the data in the packet have some sort of "upstream
> ok" / "upstream down" bit in it...
By "ping" I did not mean sending ICMP to peer gateway, but sending a
special command over this TCP/UDP link between gateways forcing the other
end to issue a reply. However it came up to me later, that if we have
traffic, then we have state tables updated constantly, thus alive gateway
should send the others notifications all the time. So we should try to
"ping" it only it case it goes silent (=no update request within given
interval) to see if it died or workstation users went home ;) "Upstream
up/down" flag is a good idea.

 

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