80
C
HAPTER
6: R
ELEASE
I
SSUES
FOR
M
ULTILAYER
S
WITCHING
M
ODULES
4-port GBIC
Multilayer Switching
Module (3CB9RG4)
The following system issue applies only to the 4-port GBIC Gigabit
Ethernet Multilayer Switching Module:
■
If you hot swap this module from one chassis type to a different
chassis type and then insert it back into the original slot, the module
configuration in NVRAM may reset back to factory default settings. To
save the module’s original configuration, perform a backup of the
module configuration before you hot swap the module.
Known Problems in
Release 3.0.5
This section describes problems that are known to exist in Multilayer
Switching Modules operating with software Release 3.0.5.
System
■
At the Administration Console, entering a seemingly valid command
string (two or more commands taken from menus and nested
submenus) may not work. If this situation occurs, enter commands
separately from one menu prompt at a time.
SNMP
■
Some Release 3.0.x features may become unstable when the
associated Switch devices are polled by Enterprise VLAN Manager,
Address Tracker, and other Transcend applications that poll the bridge
address MIB tables. These features and protocols include Trunk
Control Message Protocol (TCMP), Virtual Router Redundancy
Protocol (VRRP), and Spanning Tree Protocol (STP) topology changes.
3Com recommends that you use these Transcend management
applications only for configuration and problem isolation purposes.
When you use these applications, SNMP polling can contribute to
unexpected events in the configuration associated with TCMP, VRRP,
and STP. (29371 and 29797)
For information about controlling the Transcend Enterprise VLAN
Manager and Address Tracker management applications, see the
“General Functional Limitations” section, problem NMDww04250, in the
Transcend Network Control Services Readme files for the February 2000
Update.
■
A multilayer switching module that has a port with a physical link
configured reports two types of incorrect link up traps when you
initialize the module, depending on whether or not the Spanning Tree
Protocol (STP) is enabled. If STP is enabled, the module reports two
link up traps when it should only report one. If STP is disabled, the
module reports no link up traps when it should report one. (29864)
Summary of Contents for 4007
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