[c-nsp] ARP Timeout - IP address takeover

[Edward B. Dreger]

PS> Date: Fri, 21 Jan 2005 04:46:40 -0500
PS> From: Paul Stewart <pauls at nexicom.net>

PS> Our mail administrator is implementing a small mail cluster solution
PS> that involves  using IP takeover techniques in case of failure.  So, at
PS> one moment an IP could belong to one MAC address but if a box fails that
PS> IP could showup with a different MAC within seconds....

Some of us use BGP, advertise a /32 internally, and crank down the
timers.  i.e., consider failing over at a higher level.  Also consider
lower-level failover with MAC address takeover methods such as HSRP and
VRRP.

Not advocating any particular method for your situation... just tossing
out some general suggestions to consider.


Eddy
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