[rbridge] duplicate-arp equivalence.
sommerfeld at sun.com
Mon Aug 2 20:40:57 PDT 2004
I've looked at rbridges a little bit from the perspective of a host
A very desirable property of an rbridge ARP proxy would replicate the
existing arp conflict detection behavior you see on a broadcast
network -- both nodes see both arp replies, and a common response is
to generate a log message along the lines of:
WARNING: IP: Hardware address '00:90:96:xx:yy:zz' trying to be
our address 130.129.a.b!
(quoted from a log entry from earlier today on my laptop; edited to
protect the guilty from embarassment).
A collection of rbridges would have to do something special in this
case to notice the address collision -- so, in addition to generating
the duplicate arp replies it could also generate a log message/audit
event/management trap indicating that something odd is going on.
In addition, an rbridge could be in a position to "resolve" the clash
by enforcing its own policy.
(I'd appreciate it if section 7 of the draft could be enhanced to
mention this case..)
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