Re: [Bridge] bnx2 doesn't transmit BPDU or Blade switches don't forward, them?

[Tamas Csillag <tcsillag@interware.hu>]

Hi!

I'm faced with the same problem, and i'm not sure if it's a driver or 
bridge problem.
I'm using 2 switches, connected on port16.

  switch1-----switch2-----router
       \       /
        \     /
        server1

Switch1 bridge priority: 4096
Switch2 bridge priority: 5120
Default bridge priority on servers: 65535

If the switches are connected, STP forms just nice, switch1 becomes 
root. If i disconnect the switch-switch cable, switch1 remains root, the 
servers see switch1 as root, but switch2 declares itself as root. Guess 
it's not receiving BPDU packets from the servers. If more than one 
server is connected to both switches, loop forms, network goes down.

If i lower the bridgeprio on server1 to 2048, everybody accepts it as 
the new root bridge, even switch2.

I tested the switches, they play STP nicely in a mixed-vendor environment.

Is it possible that the bridge/bnx2 don't propagate BPDUs from switch1 
to switch2, while still receiving and transmitting BPDUs?


Regards,
Tamas


-- 
Tamas CSILLAG
IT consultant

A+ Server+ MCSA CCNA
JNCIA JNCIS 3DP APS
DCCA BAIS QFCA

tcsillag@interware.hu
+36 30 288 5488


-----Diego Woitasen wrote:

Date: Sun, 30 Aug 2009 20:10:32 -0300
From: Diego Woitasen <diegows@xtech.com.ar>
Subject: [Bridge] bnx2 doesn't transmit BPDU or Blade switches don't
	forward	them?
To: Bridge@lists.linux-foundation.org
Message-ID:
	<b10f571a0908301610v246a7ce2v8d43a98fda2242cd@mail.gmail.com>
Content-Type: text/plain; charset=ISO-8859-1

Hi,
  I have two Blades in one enclosure. They receive the same VLAN trunk
to bridge the VLANs and I want to have two bridges enabled in each
server. I've configured the bridge and enabled STP but I don' t see
the BPDU multicast incoming from the interface (I see the outging
packets).

xen198:~# tcpdump -i peth0 -enn ether dst 0180c2000000
tcpdump: WARNING: peth0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on peth0, link-type EN10MB (Ethernet), capture size 96 bytes
20:07:27.150902 00:23:7d:37:1a:82 > 01:80:c2:00:00:00, 802.3, length
52: LLC, dsap STP (0x42) Individual, ssap STP (0x42) Command, ctrl
0x03: STP 802.1d, Config, Flags [none], bridge-id
0001.00:23:7d:37:1a:82.8001, length 35
20:07:29.150876 00:23:7d:37:1a:82 > 01:80:c2:00:00:00, 802.3, length
52: LLC, dsap STP (0x42) Individual, ssap STP (0x42) Command, ctrl
0x03: STP 802.1d, Config, Flags [none], bridge-id
0001.00:23:7d:37:1a:82.8001, length 35
20:07:31.150879 00:23:7d:37:1a:82 > 01:80:c2:00:00:00, 802.3, length
52: LLC, dsap STP (0x42) Individual, ssap STP (0x42) Command, ctrl
0x03: STP 802.1d, Config, Flags [none], bridge-id
0001.00:23:7d:37:1a:82.8001, length 35

xen199:~# tcpdump -i peth0 -enn ether dst 0180c2000000
tcpdump: WARNING: peth0: no IPv4 address assigned
tcpdump: verbose output suppressed, use -v or -vv for full protocol decode
listening on peth0, link-type EN10MB (Ethernet), capture size 96 bytes
20:07:35.115593 00:23:7d:37:08:78 > 01:80:c2:00:00:00, 802.3, length
52: LLC, dsap STP (0x42) Individual, ssap STP (0x42) Command, ctrl
0x03: STP 802.1d, Config, Flags [none], bridge-id
0002.00:23:7d:37:08:78.8001, length 35
20:07:37.115618 00:23:7d:37:08:78 > 01:80:c2:00:00:00, 802.3, length
52: LLC, dsap STP (0x42) Individual, ssap STP (0x42) Command, ctrl
0x03: STP 802.1d, Config, Flags [none], bridge-id
0002.00:23:7d:37:08:78.8001, length 35
20:07:39.115613 00:23:7d:37:08:78 > 01:80:c2:00:00:00, 802.3, length
52: LLC, dsap STP (0x42) Individual, ssap STP (0x42) Command, ctrl
0x03: STP 802.1d, Config, Flags [none], bridge-id
0002.00:23:7d:37:08:78.8001, length 35

Blade MACs are:
00:23:7d:37:08:78
00:23:7d:37:1a:82

Is there some issue with bnx2 or Blade switches and Linux bridge?

Regards,
  Diego
-- 
Diego Woitasen
XTECH