3Com 3CB9LF10MC Plumbing Product User Manual


 
System Issues
29
VLANs
Removing the default VLAN before you create additional VLANs no
longer causes modules to go down after a module reset. Previously,
you had to move the module to another slot in the chassis to
reinitialize. (26223)
Previously, in some configurations, the system did not allow the proper
number of VLANs to be defined, causing an out-of-resources
message. The system now allows correct VLAN definition. (27137)
System Issues
This section describes operating considerations that apply to Layer 2
switching module operational software Release 3.0.
The numbers that appear in parentheses at the end of some descriptions
are for internal 3Com use only.
Staging
You cannot stage a module in one chassis type and then move this
module to another chassis type, due to variations in the backplane
port mapping.
System
The 36-port 10/100BASE-TX Desktop Switching Modules (Model
Numbers 3CB9LF36RL and 3CB9LF36TL) are designed to switch traffic
among desktop workstations that are connected to wiring closets. Do
not connect the module’s front-panel ports to routers, switches, or
network hubs. You can connect a small repeater (only) if you stay
within the address limits of the port. (The default limit is two
addresses.)
When you move a module from one chassis to another, the
configuration of the module remains intact. (27113)
After you enter an
nvdata reset
command (or initiate a trunk group
definition or deletion), there is a delay before the module initiates the
reset and returns to the Administration Console.
When you first insert and initialize a Gigabit Ethernet Layer 2
Switching Module in a CoreBuilder 9000 chassis, the primary switch
fabric module in the chassis generates the trap sequence:
Link Up...
Link Down... Link Up
. This is normal.