From: Brant Stevens (branto@xxxxxxxxxxxxx)
Date: Mon Mar 25 2002 - 18:50:16 GMT-3
In all likelihood, but setting the priority to 1, it WILL become the root
bridge for the VLAN in question. Just set the STP priority for the bridge
on the VLAN you want higher than the priority of the current root bridge.
Do a sh spantree <VLAN#>
bnc-nyc-c6509-core-1 (enable) sh spantree 1
VLAN 1
Spanning tree mode PVST+
Spanning tree type ieee
Spanning tree enabled
Designated Root 00-d0-00-ab-9c-00
Designated Root Priority 100
Designated Root Cost 0
Designated Root Port 1/0
Root Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec
Bridge ID MAC ADDR 00-d0-00-ab-9c-00
Bridge ID Priority 100
Bridge Max Age 20 sec Hello Time 2 sec Forward Delay 15 sec
In the case above, setting the STP priority to 1 for VLAN 1 would make that
switch the root for VLAN 1.
If you set the STP priority to 101, it wouldn't. (Just so happens, that on
my network 101 would make it elibgible for backup, as 200 is the next-lowest
value... =))
-Brant
----- Original Message -----
From: "peter brown" <pita40@hotmail.com>
To: <ccielab@groupstudy.com>
Sent: Monday, March 25, 2002 5:15 PM
Subject: switch not considered for root bridge
> Hello,
>
> What command do you use so that a
> switch is not considered for root bridge selection.
>
> I know if you want the switch to be considered as the root bridge for vlan
1
> for example, you use, set spantree priority 1 1
>
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