UPDATE:Problems with a Mail server with 2 routers running OSPF
zeimm at auladin.com
Mon May 10 10:14:48 EAT 2004
After more investigation, we've found that we actually had three problems,
first a virus on the LAN caused the initial the Lotus Notes server to stop
opening ports for connection thus giving the 'server not responding'
response. We then implemented reflexive access-lists on the 2 routers that
were running OSPF and connection to one main site router to keep the virus
on the LAN until it was removed and those access-lists then caused
connection problems from the site.
The main site router was not sending packets back onto the same router that
the PC connection originated from and were hence being dropped. That was
the second problem.
For some reason which is still unknown the server was reacting to these bad
connections by intermittently dropping all connections. That's the third issue.
I'm concerned about how to make this architecture work well since the ip
route cache on the main site Cisco router does not seem to be working
_______ SITE ROUTER 1(OSPF- 2 subinterfaces-1 DLCI on each main site FR
line) ---- gateway for half of LAN PCs
MAIN SITE ROUTER (OSPF-2 serial connections to 2 FR lines)
_______SITE ROUTER 2(OSPF- 2 subinterfaces-1 DLCI on each main site FR
line) -----gateway for half of LAN PCs
Any suggestions on what to implement this architecture with reflexive
access-lists on each site router?
Thanks and regards,
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