[Bridge] PVST

Leigh Sharpe lsharpe at pacificwireless.com.au
Thu Apr 26 21:53:05 PDT 2007

So, if I put a linux bridge in a network which has PVST packets flying around, will it pass them, or silently drop them?
Should I have STP disabled on my linux box?
(I'm particularly referring to a 6.2.19-ish kernel, before the patches of the last few days) 

Leigh Sharpe
Network Systems Engineer
Pacific Wireless
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-----Original Message-----
From: shemminger at linux-foundation.org [mailto:shemminger at linux-foundation.org] 
Sent: Friday, April 27, 2007 2:07 PM
To: Leigh Sharpe
Cc: bridge
Subject: Re: [Bridge] PVST

On Fri, 27 Apr 2007 10:47:42 +1000
"Leigh Sharpe" <lsharpe at pacificwireless.com.au> wrote:

> Hi All, 
> Does the current bridging code handle PVST properly, or just ordinary
> STP?

Ordinary, STP.  The 2.6.22 kernel will have all the bits to run STP in
user mode, and there is a version of RSTP in userspace see:

The RSTP code uses the rstplib and it knows about VLAN's, but the hooks
aren't there yet. Eventually, full MSTP 802.Q seems like a good idea.

Someone had sent some patches to do PVST, but PVST seems to be Cisco
centric. and the patched version was too inflexible, so I didn't put
it in mainline.

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