Key Guidelines For Implementation - 3Com corebuilder 3500 Implementation Manual

132 C 7: B
HAPTER RIDGE
Key Guidelines for
Implementation
-W B P P
IDE AND RIDGE ORT
Consider the following guidelines when you configure bridge-wide and
bridge port parameters on your system:
When you disable bridge-wide STP, the bridge cannot participate in
the algorithms for loop detection.
Table 13 describes the forwarding behavior of a port based on its
bridge and port STP states:
Table 13 Port Forwarding Behavior Depends on Bridge and Port STP States
Bridge STP State
Disabled
Enabled
When STP is removed from the port but is enabled for the bridge, the
port is invisible to STP but can forward frames. Removing the port
from STP is useful if you have an edge switch device that is connected
to end stations (such as PCs) that are frequently turned on and off.
The port numbering shown for your ports is always sequential. See
Chapter 4 for more information about port numbering.
When you are prompted to select ports, specify the
matrix of information about your bridge ports, including a Selection
column, a Port column, and a Label column.
Without trunking, the Selection and Port columns contain the
same port numbers, which indicates that you can select each port.
With trunking, the Selection column indicates that you can select
the anchor port (lowest-numbered port) in the trunk, and the Port
column shows each port that is associated with the trunk. The
Label column contains the trunk name, if you have assigned one.
ARAMETERS
Port Participates
Port STP State in STP?
Disabled No
Enabled No
Removed No
Disabled No
Enabled Yes
Removed No
Port Forwards
Frames?
Yes, if link state is up.
Yes, if link state is up.
Yes, if link state is up.
No
Determined by STP
provided that the port
link state is up.
Yes, if link state is up.
option to see a
?