From: Brant Stevens (branto@xxxxxxxxxxxxx)
Date: Tue Dec 11 2001 - 04:45:14 GMT-3
8192 is the value that the "set spantree root" macro uses for the bridge
priority... I like to explicitly set the root priorities to 100, and 200
for the switch that will become the root should the root bridge fail.
By default, Cisco switches choose a value of 32768...
I've also noticed on some versions of code that if you have a switch out
there that is already the STP root for a VLAN and you run the set spantree
root macro on a Cat, the Catalyst will make its' priority one less than the
current root bridge... The set spantree root secondary will only set the
bridge priority to 16384.
-Brant.
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
Rodgers Moore
Sent: Monday, December 10, 2001 10:53 PM
To: Liu Jianxin-qch1927
Cc: 'Albert Lu'; 'Mas Kato'; ccielab@groupstudy.com
Subject: Re: Root Bridge
The only problem with 0 is this means that it cannot be the root bridge or
considered in choosing a root bridge. 1 is the lowest value and highest
priority for a device to be root.
Rodgers Moore, CCIE# 8153
Liu Jianxin-qch1927 wrote:
> Yesterday somebody mentioned the 1 is the lowest value.
>
> But I check the CD, the range is from 0 to 65535.
>
> set spantree priority 0 should be the right answer.
>
> -----Original Message-----
> From: Albert Lu [mailto:albert_ccie@yahoo.com]
> Sent: Sunday, December 09, 2001 6:46 PM
> To: 'Mas Kato'
> Cc: ccielab@groupstudy.com
> Subject: RE: Root Bridge
>
> So what does setting the port priority to 8192 do? Isn't that the magic
> number?
>
> -----Original Message-----
> From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
> Mas Kato
> Sent: Sunday, December 09, 2001 7:11 PM
> To: ccielab@groupstudy.com; c_ccie@hotmail.com
> Subject: RE: Root Bridge
>
> [demime could not interpret encoding binary - treating as plain text]
> To assure it, use the 'set spantree priority 0' command.
>
> Regards,
>
> Mas Kato
> https://ecardfile.com.id/mkato
>
> > "CCIE Cisco" <c_ccie@hotmail.com> ccielab@groupstudy.com Root
BridgeDate:
> Sat, 08 Dec 2001 22:00:48 -0500
> >Reply-To: "CCIE Cisco" <c_ccie@hotmail.com>
> >
> >Hi,
> >
> >what is the command to make Catalyst5000 as root bridge without using
> >spantree root command.
> >
> >Thanks
> >
> >
> >
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