Release Notes for the BayStack 450 10/100/1000 Series Switch

--ICMP echo (PING) requests do not receive responses.

--All IP-related processes fail temporarily.

Tagged bridge protocol data units (BPDUs)

Tagged BPDUs are not supported in this version.

Network interface controllers (NICs)

The MultiLink Trunking feature supports only multiport NICs that are configured as a single MAC address, single IP address entity.

Downgrading a switch or stack to a software version earlier than software version V1.3.

Note: Software versions earlier than software version V1.3 do not support distributed trunking. You must remove any distributed trunks before you downgrade the switch to software versions earlier than software version V1.3 or problems will occur.

If you must downgrade a switch from software version V1.3 (or later) to an earlier version, you must first remove any existing distributed trunks using the MultiLink Trunk Configuration screen. You can remove the trunk by disabling the trunk and setting all the trunk members to none [blank field].

If you downgrade a switch with a bounded MultiLink trunk from software version V1.3 (or later) to an earlier version, some ports may become disabled. If this happens, you can enable the ports again using the Port Configuration screen.

Configuring port mirroring monitor ports

Nortel Networks recommends that you configure the port mirroring monitor port to be on the same stack unit as the mirrored ports.

Monitoring outgoing frames on a gigabit Ethernet port

When you monitor outgoing frames on a gigabit port, the multicast frames that are generated by the switch (for example, BPDUs, Autotopology, and IGMP) will not be seen on the monitor port.

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Nortel Networks manual Release Notes for the BayStack 450 10/100/1000 Series Switch