Serious Cisco issues

Serious Cisco issues
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Subject Author Date
Serious Cisco issues Dan 08-19-2004
Posted by Dan on August 19, 2004, 3:39 pm
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Since December I have had a very nagging Cisco issue. Any advice
would really help.

Configuration:

CAT5500 with 5.5 OS
9 port Gigabit card
6 5225R FastEthernet Cards.
Sup II module with 32MG of RAM.

Cisco 7206 router with 4 100TX ports Fast Etherchanneded into the
switch. IOS 12.2 running OSPF as the routing protocol

Many "desktop" switches, (Cisco 3548XL and Cisco 2950) most of which
are attached to the Giga ports. 5 switches are connected to
FastEthernet ports. The switches Connected to the Giga ports may have
from 0 to 4 other desktop switches cascaded from them. Total of about
31 desktop switches

Symptoms: The nework just seems to crash. Connectivity all all
systems is lost. After a reboot of the switch connectivity from most
user to most servers is restored. However some connectivity is still
lost. The lost connectivity can take plase on the same VLAN where
other devices are working properly. ie 10.9.1.1 (the backbone switch)
can get to 10.9.1.32, but not 10.9.1.191. This is via an extended
ping.

After rebooting the Cisco 7206 the network becomes active agin.
Router CPU utilization is very low (2-4%).

Any help will be greatly appreciated.

Dan


NMFall 20%
Posted by mh on August 20, 2004, 2:43 pm
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Please provide configs for router and backbone switch to

merv.hrabi@rogers.com


Posted by Peter on August 21, 2004, 3:42 pm
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Hi Dan,
> Symptoms: The nework just seems to crash. Connectivity all all
> systems is lost. After a reboot of the switch connectivity from most
> user to most servers is restored. However some connectivity is still
> lost.

Are you seeing anything like a broadcast storm at this time? Either
that or perhaps a spanning-tree issue of some sort. Are you using
quite few VLANS and/or VTP? We really need some more detail on the
specific configurations being used.

Regards..........pk.

--
*** Replace SOMEONE with prk ***



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