[c-nsp] GESM/GLBP

jcovini at free.fr jcovini at free.fr
Mon May 15 05:46:32 EDT 2006


Hello,

Have a couple of GESM switches, running 12.2(25)SED fc1.
Their default-gateway is set to a GLBP virtual address.

GLBP does host-dependant loadbalancing, my problem is that when a GLBP
switchover occurs, GESM becomes unresponsive (They don't reply to ping
remotely, they reply to ping from the same subnet, but they do not reply to
telnet from the same subnet !?!).

clear arp / rebooting the GESM has no effect.
However setting a real address as the default gateway solves the problem.
The issue does not occur with standard hosts (server, workstations) plugged onto
the same VLAN with the same default gateway address. Looks like GLBP behaves
just fine, including switchover, except with those GESMs.

Any hints ?



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