With IPHost Network Monitor you can run simple snmp requests against a Nortel device in your network.
vctVcSubnetRxPktSize
VC Tester Vc Subnet Rx Packet Size
1.3.6.1.4.1.562.2.4.1.5130.4.10.1.25
This attribute displays the locally negotiated size of receive packets.
Back to Nortel-Magellan-Passport-VcTesterMIB MIB page.
IPHost Network monitor allows you to monitor vctVcSubnetRxPktSize 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 secure routers right now.