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From: Butorina Lilya <lilybox@yandex.ru>
To: bridge@lists.linux-foundation.org
Subject: [Bridge] Time of topology change in root bridge
Date: Tue, 12 Jan 2010 11:15:32 +0300	[thread overview]
Message-ID: <28201263284132@webmail50.yandex.ru> (raw)

Hi.

I have two bridges with RSTP:

     hdlc0------hdlc0
br0 |                | br1
     hdlc1------hdlc1

br0 is root bridge.

And my initial tree topology:
#rstpctl showport br0
*    hdlc0 8001 Fwd  8000-00ee10022202 8000-00ee10022202 8001 D
*    hdlc1 8002 Fwd  8000-00ee10022202 8000-00ee10022202 8002 D

#rstpctl showport br1
*    hdlc0 8001 Blk  8000-00ee10022202 8000-00ee10022202 8002 R
*    hdlc1 8002 Fwd  8000-00ee10022202 8000-00ee10022202 8001 A


Next I break link on br1 on root port hdlc0 and get new three topology immedatly:
#rstpctl showport br0
*    hdlc0 8001 Dis  8000-00ee10022202 8000-00ee10022202 8001
*    hdlc1 8002 Fwd  8000-00ee10022202 8000-00ee10022202 8002 D

#rstpctl showport br1
*    hdlc0 8001 Dis  8000-00ee10022202 8000-00ee10022202 8002 
*    hdlc1 8002 Fwd  8000-00ee10022202 8000-00ee10022202 8001 R


Next I restore link. 
Here I expect that bouth bridges calculate new (initial) tree topology in 4sec.

I see expected on br1:
*    hdlc0 8001 Blk  8000-00ee10022202 8000-00ee10022202 8002 R
*    hdlc1 8002 Fwd  8000-00ee10022202 8000-00ee10022202 8001 A

But on root bridge br0 I see new tree topology in 30sec.
This time interval looks like STP value.

Is this correct behavior of RSTP or bug?


Thanks. 
Lilya.

             reply	other threads:[~2010-01-12  8:15 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2010-01-12  8:15 Butorina Lilya [this message]
  -- strict thread matches above, loose matches on Subject: below --
2010-01-12  8:32 [Bridge] Time of topology change in root bridge Butorina Lilya

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