We have two catalysts 6509 with two msfc2 cards each running
hsrp. All these 4 routers are being monitored using MRTG.
After upgrading two msfc2 cards on the first catalyst 6509 to IOS 12.1(13)E , both of them stopped responding to snmp request,
for example:
snmpwalk: No response arrived before timeout.
The other two msfc2 cards , running IOS 12.1(11b)E1 respond to snmp requests.
Any ideas?