OK here's a good one...
A remote office with 1.5meg P2P pipe and BRI back up drops calls every 9 to 20 minutes. Turns out an SNMP app server was being set-up and was only pinging the RO, but from another network. Every time it was pinged the RO interpreted it as an ICMP redirect message and changed gateways. The reason it didn't back up to BRI is the route in the PBX had been changed to a non-PRI route.
Look for a Nortel product bulletin soon, but you get the scoop here
Remote Office 9150 is taking an ICMP redirect which is a classless message (no mask identified) and the 9150 is creating a routing table entry within the product that is based on the inherent IP Class mask NOT the configured class map.
A remote office with 1.5meg P2P pipe and BRI back up drops calls every 9 to 20 minutes. Turns out an SNMP app server was being set-up and was only pinging the RO, but from another network. Every time it was pinged the RO interpreted it as an ICMP redirect message and changed gateways. The reason it didn't back up to BRI is the route in the PBX had been changed to a non-PRI route.
Look for a Nortel product bulletin soon, but you get the scoop here
Remote Office 9150 is taking an ICMP redirect which is a classless message (no mask identified) and the 9150 is creating a routing table entry within the product that is based on the inherent IP Class mask NOT the configured class map.
