With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vrIpTcpRToMin
Virtual Router Ip Tcp R To Min
Indicate the minimum value, measured in milliseconds, allowed for retransmission timeout.
Back to Nortel-Magellan-Passport-IpMIB MIB page.
IPHost Network monitor allows you to monitor vrIpTcpRToMin on Allied Telesis device via the SNMP protocol. Download IPHost Network Monitor (500 monitors for 30 days, 50 monitors free forever) to start monitoring Nortel multiplexers right now.