From: Jeff Kesemeyer (jkesemey@xxxxxxxxxxxxx)
Date: Fri Feb 01 2002 - 20:32:49 GMT-3
This is a must read book for STP and other great info...
Interconnections, Second Edition: Bridges, Routers, Switches, and
Internetworking Protocols
Radia Perlman / Hardcover / Addison Wesley Longman, Inc. / September
1999
Price: $59.95
Jeff Kesemeyer
CCNP, CCDP, MCSE, CNE
www.bradshawlabs.com
"Your CCIE Rack Rental Source"
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Jim Newton
Sent: Friday, February 01, 2002 6:08 PM
To: MADMAN; Brian
Cc: SEAN; ccielab@groupstudy.com
Subject: RE: Need a good reference for Spanning Tree
Do you mean Interconnections?
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com]On Behalf Of
MADMAN
Sent: Friday, February 01, 2002 4:47 PM
To: Brian
Cc: SEAN; ccielab@groupstudy.com
Subject: Re: Need a good reference for Spanning Tree
Another good book on bridging is Radia Pearlman's. I have it at my
desk but I'm at home and the title escapes me.
Dave
Brian wrote:
> On Fri, 1 Feb 2002, SEAN wrote:
>
> > Can anyone recommend a good reference to how spanning tree chooses
> > which ports to go up to the root bridge?
>
> LAN Switching by CiscoPress, or Buildiing Multilayer Switched Networks
> by CiscoPress.
>
> >
> > Basically, I have the following set up - two catalyst 5500 switches
> > with two trunks between them: Switch A port 1/1 to Switch B port 1/1
> > Switch A port 2/1 to Switch B port 2/1
> >
> > Seems the switch always wants to use 1/1 as the spanning tree root
> > (unless it's not available). If 1/1 is disabled, and 2/1 is
> > forwarding fine, and I reenable 1/1, spanning tree recalculates, and
> > 1/1 becomes forwarding again.
> >
> > These are supervisor III's, and I was thinking that it probably
> > wants to use the ports with the lowest mac address? But if I do show
> > mod, both supervisor modules show the same mac address range.
> >
> > Can anyone recommend a good resource on how spanning tree chooses
> > ports?
> >
> > --------------------------------------------------------------------
> > ----
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