Thanks Joe! Forget I said anything like 4096.(Jedi mind trick) that is not
the number I put for MST.

 

-Mike

 

From: Joe Astorino [mailto:[email protected]] 
Sent: Tuesday, July 07, 2009 8:48 PM
To: Michael Lipsey
Cc: [email protected]
Subject: Re: [OSL | CCIE_RS] Vol1 - Section 4.3

 

Hey Michael.  Check out the 3560 software config guide under spanning-tree.
Looks like according to the latest docs PVST+ and RPVST+ support 128 and MST
supports 65 instances.  Frankly this surprised me, because all the books
usually say MST supports 64 instances. Maybe 64+instance 0 ?  Anyways, that
is where it is at.

" In PVST+ or rapid-PVST+ mode, the switch supports up to 128 spanning-tree
instances. 

In MSTP mode, the switch supports up to 65 MST instances. The number of
VLANs that can be mapped to a particular MST instance is unlimited."

 

On Tue, Jul 7, 2009 at 11:41 PM, Michael Lipsey <[email protected]>
wrote:

This ought to be an easy one: In this task it refers to supporting more than
100 instances of spanning tree - I can't find anything really that defines
this in any of my documentation. In the DocCD (Web site) I can't find any
reference to how many spanning tree instances are supported for RSTP,
PVST(+) - all I've found is that MST supports 4096 instances. I want to of
course confirm that RSTP or PVST support less than 100.

Where can I find this?

Thanks,
-Mike

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-- 
Regards,

Joe Astorino 
CCIE #24347 (R&S)
Sr. Support Engineer - IPexpert, Inc.
URL: http://www.IPexpert.com

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