Specifications

40 ExtremeWare 7.1.1 Release Notes
Clarifications, Known Behaviors, and Resolved Issues
Load Sharing and Specific Ports in a Load Share Group
Due to the load sharing algorithm used for round robin load sharing, when using 3, 5, 6 or 7 ports in a
load share group packet loss will be observed when sending wire-speed traffic across the load share
group. This occurs because some ports will be selected to transmit more packets than other ports
resulting in bandwidth over-subscription and subsequent packet loss. This only occurs with round-robin
load sharing configurations (10311).
Load Sharing, Software Redundant Ports, and Smart Redundancy
The smart redundancy feature is not supported when using software redundant ports and load sharing
(12431).
Disabling Load Sharing if the Master is Down Generates Error
If the load sharing master link goes down, and you disable load sharing, the switch generates a ptag
error message (PD2-129379272).
Mirroring
Do Not Configure Port Mirroring While Port is Down
If you reconfigure port mirroring while the physical port is down, switched traffic that crosses a routing
boundary is duplicated (PD2-147476551).
Mirroring and Multicast
Mirroring might cause multicast processing to halt and report otpRamBusyWait failures in the log
(PD2-133634301).
Mirroring IP Multicast Traffic
Due to IGMP Snooping capabilities, Multicast traffic may cease to be seen on a “mirror port”. If you
issue a “restart” command for the mirror port or remove and reinsert the port connection, multicast
traffic will resume for the IGMP Host time out period (260 sec) (3534).
Mirroring and Flooding
When a mirrored port is configured, the forwarding database for items being mirrored (e.g. ports or
VLANs) are automatically cleared from the forwarding database if the link status on the mirror port
changes. This will result in some temporary flooding until the normal learning process completes. Thus,
removing or inserting a probe device into the mirror port may appear to cause flooding, however this is
expected behavior (5128).
Spanning Tree
Disabling STP Might Display Topology Change
When you disable STP, the output of the show stpd command displays a topology change. If there was
not actually a topology change, you can safely ignore this indicator (PD2-165211765).