From: Johnny Tsao (johnnyt@xxxxxxxxxx)
Date: Sun Dec 09 2001 - 02:35:04 GMT-3
taken from CCO:
Configuring the Root Switch
The Catalyst enterprise LAN switches maintain a separate instance of the
spanning tree for each active VLAN configured on the switch. A bridge ID
(MAC address) and bridge priority are associated with each instance of
spanning tree. The switch with the lowest bridge priority becomes the root
switch for that instance of spanning tree.
When you configure a switch as the root, the spanning-tree bridge priority
is modified from the default value (32768) to a significantly lower value so
that the switch becomes the root for the specified VLANs.
The switch checks the bridge priority of the current root switches for each
VLAN. The bridge priority for the specified VLANs is set to 8192 if this
value will cause the switch to become the root for the specified VLANs.
If any root switch for the specified VLANs has a bridge priority lower than
8192, the switch sets the bridge priority for the specified VLANs to 1 less
than the lowest bridge priority.
http://www.cisco.com/univercd/cc/td/doc/product/lan/cat5000/rel_5_5/sw_cfg/s
pantree.htm#xtocid2037319
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
CCIE Cisco
Sent: Saturday, December 08, 2001 7:01 PM
To: ccielab@groupstudy.com
Subject: Root Bridge
Hi,
what is the command to make Catalyst5000 as root bridge without using
spantree root command.
Thanks
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