[f-nsp] Spanning tree on brocade

[Nick Cutting]

I think its routing code:

Remote switches using FDP show it as a router and I have:

telnet at Turbo4 (config)#router ?
  bgp             Enable bgp
  msdp            Enable msdp
  ospf            Enable ospf
  pim             Enable pim
  rip             Enable rip
  vrrp            Enable vrrp
  vrrp-extended   Enable vrrp-extended
  vsrp            Enable vsrp

sh ver
  SW: Version 04.2.00c Copyright (c) 1996-2010 Brocade Communications Systems, Inc.
      Compiled on Jan 12 2011 at 19:46:00 labeled as TIR04200c
      (5473051 bytes) from Primary TIR04200c.bin
      Compressed Boot-Monitor Image size = 373767, Version:04.1.00T205 (grz04100)


As you all can probably guess – we had a bit of a spanning tree meltdown.  I am trying to figure out what happened.
I get plenty of incorrect costs, and it is stable now and am trying to figure out what happened, what may have caused this.

I know we need to enable 802-1w everywhere and move the root bridges, but right now I’m in the audit phase and am trying to understand what happened.
The port-level spanning tree – when not running any form of spanning tree – does this forward unmodified BPDUs (i.e a cost of 0 as stated)

“STP configured to ON, priority is level0”

I cannot find what this does in any brocade documentation .

Also – any Ideas why a trunk does not lower the cost of the link? Or get treated as an aggregated link by STP?



From: ekoyle at gmail.com [mailto:ekoyle at gmail.com] On Behalf Of Eldon Koyle
Sent: Wednesday, May 18, 2016 2:03 AM
To: Nick Cutting
Cc: foundry-nsp
Subject: Re: [f-nsp] Spanning tree on brocade


So neither "show span" nor "show 802-1w" shows spanning tree running?  Is this turboiron running routing code or switch code?  IIRC, the default is single spanning tree on switch code and no spanning tree on routing code.

--
Eldon Koyle
On May 17, 2016 2:12 PM, "Nick Cutting" <ncutting at edgetg.com<mailto:ncutting at edgetg.com>> wrote:
I think I have found my answer – as this switch is not participating in spanning tree – I believe that :

STP configured to ON, priority is level0

Is forwarding the BPDU’s unmodified.

Would I be correct in this assumption? I see the correct Bridge ID’s as if this switch is not there.

From: Nick Cutting
Sent: Tuesday, May 17, 2016 3:26 PM
To: Nick Cutting; Eldon Koyle
Cc: foundry-nsp at puck.nether.net<mailto:foundry-nsp at puck.nether.net>
Subject: RE: [f-nsp] Spanning tree on brocade

Now I have another switch – that has no IEEE spanning tree, No 802w, and no pvst configured.

however, it says it is enabled on the port??

10GigabitEthernet23 is up, line protocol is up
  Hardware is 10GigabitEthernet, address is 748e.f821.57d3 (bia 748e.f821.57e9)
  Configured speed 10Gbit, actual 10Gbit, configured duplex fdx, actual fdx
  Member of L2 VLAN ID 501, port is untagged, port state is FORWARDING
  BPDU guard is Disabled, ROOT protect is Disabled
  Link Error Dampening is Disabled
  STP configured to ON, priority is level0

Now – the loops prevention is on the otherside – and they are receiving BPDU’s on this switch – how can this be possible with no stp config?

Can someone please elaborate on the port level spanning tree?

Thanks !

_______________________________________________
foundry-nsp mailing list
foundry-nsp at puck.nether.net<mailto:foundry-nsp at puck.nether.net>
http://puck.nether.net/mailman/listinfo/foundry-nsp
________________________________
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <https://puck.nether.net/pipermail/foundry-nsp/attachments/20160518/55b25c29/attachment.html>