Skough Axel IT-S <[EMAIL PROTECTED]> writes:
> The IP protocol 54 is NBMA Next Hop Resolution Protocol, this protocol is
> used to find out tyhe shortest way between two points and is used by some
> routing protocol, I am not sure, maybe the OSPF or something similar.
>From a casual reading of the RFC, it looks like NHRP should only be
used to find the first hop--the egress router--on a non-broadcast
multi-access network, and it should only be sent to the next hop
server for the NBMA network. We regularly see protocol 54 packets
sent to our web server, from networks that I *know* aren't NBMA, so I
think there has to be some serious misconfiguration or
misinterpretation of the RFC at work.
--
Dan Riley [EMAIL PROTECTED]
Wilson Lab, Cornell University <URL:http://www.lns.cornell.edu/~dsr/>
"History teaches us that days like this are best spent in bed"
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