Installation guide

AT-S25 Management Software Release Notes
613-50514-00 Rev A 12 Allied Telesyn, Inc.
❑ Problem:
The root bridge sends out a BPDU with the Topology Change Bit set at 2-second
intervals, for about 20 seconds, when there is a STP topology change and after 15
seconds of blocking state. When the 8324 receives this packet, it flushes the FDB instead
of following the IEEE rule of setting the FDB to 10-second aging. Reference Customer
#102728 (Bugzilla # 562).
❑ When STP is enabled on a switch and it is reset with a link attached, the attached link will
transmit RSTP BPDUs until it is linked down. If the switche’s link partner is also an AT-S25
that is configured for STP, both switches will transmit RSTP BPDUs with itself being the
root. This causes both switches to be in the forwarding state. Reference Customer
#102837 (Bugzilla # 533).
❑ When send & receive traffic exceeds mirror destinations maximum speed on the same
port group, the traffic being mirrored is limited to that maximum speed. This seems to
be the normal behavior for the Galieo Chip. However, when you mirror traffic to another
port group, the traffic that is not limited however, only receive traffic is mirrored. All of
our other switches that use the same chip mirror both Recv and transmit traffic to all
ports within the switch. Reference Customer #103058 (Bugzilla # 536).
❑ When IGMP snooping is enabled, the join messages are sent to the router port, but not
the leave messages. The 8324 should send leave messages to the router port to insure
prompt pruning of the multicast tree up stream from the switch. Reference Customer
#103520 (Bugzilla # 558).