Alcatel Omni Switch/Router, User Manual

Page: 474 / 1100

Configuring Spanning Tree
Page 17-26
4. The following prompt is displayed asking whether you would like to use the Fast
Spanning Tree feature:
Fast Spanning Tree is OFF for this Group, set to ON? (y/n) :
Enter
n
to leave Fast Spanning Tree disabled, or
y
to enable Fast Spanning Tree, and press
<return>
. Answering Yes (
y
) changes the setting of Fast Spanning Tree to the status not
currently in use for this Group.
♦
Important Note
♦
Read the prompt carefully before responding. If Fast
Spanning Tree is what you would like to use, the
correct response to this prompt is
yes . A no response
leaves the Fast Spanning Tree feature disabled.
5. The following prompt is shown allowing you to set the priority:
New Priority (0..65535) (current value is 32768[0x8000]) :
Enter the
Priority
value as a number between 0 and 65535, or press
<return>
to accept the
default listed in parenthesis. A value of 0 is the highest priority. Bridge priority is utilized
by the spanning tree algorithm to decide which bridge will be the root bridge. You can
set the bridge priority by entering a decimal number from 0 to 65,535. 0 is the highest
priority.
♦
Note
♦
To make sure that the proper negotiation occurs for the
switch to become the Spanning Tree root bridge,
always set the priority for the switch accordingly. Do
not rely on MAC addresses to determine which switch
becomes the root bridge.
6. The following prompt is displayed allowing you to set the Bridge Hello Time:
New Bridge Hello Time (1..10 secs) (current value is 2) :
Enter the
Bridge Hello Time
as a number between 1 and 10, or press
<return>
to accept the
default listed in parenthesis. The amount of time between the transmission of Configura-
tion Bridge Protocol Data Units (BPDUs) on any designated port. Enter a value between 1
and 10 seconds. Shortening the time will make the protocol more robust, while lengthen-
ing the time lowers the overhead of the algorithm as the interval between transmission of
configuration messages is larger.
7. The following prompt is displayed allowing you to set the Bridge Maximum Age:
New Bridge Max Age (6..40 secs) (current value is 6) :
Enter the
Bridge Max Age Time
as a number between 6 and 40, or press
<return>
to accept
the default listed in parenthesis. The maximum age of Spanning Tree Protocol informa-
tion learned from the network on any port before it is discarded, in seconds. Enter a value
between 6 and 40 seconds. A smaller value causes Spanning Tree to reconfigure more
often.