Per VLAN Spanning Tree +
Left running head:
Chapter name (automatic)
188
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Beta
CLI Configuration Guide
Alcatel-Lucent
T
O
S
ET
F
ORWARD
-
TIME
/ H
ELLO
-
TIME
/ M
AX
-
AGE
/ P
RIORITY
FOR
PVST+
Note:
- If you do not enter a VLAN-ID, by default it is taken as VLAN-1.
- The following formula has to be satisfied when configuring the forward-time, hello-
time and max-age:
(forward-time -1) * 2) >= max-age &&
max-age >= ((hello-time + 1) * 2)
E
XAMPLE
The following examples configures the PVST+ Forward-time to 30, Hello-time to
10 and Maximum-age to 40:
ALU(config)# spanning-tree vlan 100 forward-time 30
ALU(config)# spanning-tree vlan 100 hello-time 10
ALU(config)# spanning-tree vlan 100 max-age 40
The following command resets the PVST+ Forward-time/Hello-time/Maximum-
age/Bridge priority to its default:
ALU(config)# no spanning-tree vlan 100 forward-time
ALU(config)# no spanning-tree vlan 100 hello-time
ALU(config)# no spanning-tree vlan 100 max-age
Command (in CM)
Description
spanning-tree
[
vlan <1-4094>
]
{
forward-time
<4-30>
|
hello-
time
<1-10>
|
max-age
<6-40>
|
priority
<0-65535>
}
This command is entered in the
configuration mode to configure a
PVST+ Forward-time/Hello-time/
Maximum-age/Bridge priority.
no spanning-tree
[
vlan <1-
4094>
] {
forward-time
<4-
30>
|
hello-time
<1-10>
|
max-age
<6-40>
|
priority
<0-65535>
}
The “
no
” command resets the PVST+
Forward-time/Hello-time/Maximum-age/
Bridge priority to its default.
The default for each of the parameter
is given below:
•
Forward time: 15 seconds
•
Hello-time: 2 seconds
•
Max-age: 20 seconds
•
Priority: 32768
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