Enterasys SmartSwitch 6000 User Manual page 220

Spanning Tree Configuration Screen
Table 7-3 Spanning Tree Configuration Screen Field Descriptions (Continued)
Use this field...
AgeTime
(Modifiable)
Priority
(Selectable)
Current STP Mode
(Selectable)
VLAN
– bottom of screen
(Modifiable)
Operation
(Toggle)
7-8 802.1 Configuration Menu Screens
To...
Enter the age time (10 to 1 million seconds) for the associated VLAN.
This is the amount of time that the entry remains in the bridge
forwarding table. The default is 300.
Select the VLAN's 802.1D bridge priority using the SPACE bar. Valid
values are in multiples of 4096, with 0 indicating high priority. Default
value is 32768. The VLAN with the highest priority becomes the
Spanning Tree root.
Select the current STP mode using the SPACE bar. You can select one
of the following: IEEE, PVSTP, NONE, and DEC. The default setting
is IEEE.
It is recommended that all switches in the network be configured for
the same STP mode setting.
IEEE = 802.1w Spanning Tree Protocol – A single spanning tree for
the entire network. Redundant links are placed in standby mode. States
are predetermined to ensure an accelerated failover.
PVSTP = Per VLAN Spanning Tree Protocol – PVSTP is also known
as the Spanning Forest. PVSTP allows each VLAN to have its own
spanning tree, which allows multiple links to be active, each assigned
to a different VLAN.
NONE = Spanning tree is not enabled.
DEC = DEC spanning tree protocol.
Enter the number of the VLAN to be added or deleted from the VLAN
list.
The default value is 2.
Add or Delete the VLAN entered in the VLAN field. This field is
toggled using the SPACE bar.
The default value is Add.