[c-nsp] Switch port with BPDU guard

[Vincent De Keyzer]

Hello,

 

I am trying to connect a switch of us to the IX switch, and things are not
working.

 

My config is:

 

interface FastEthernet0/18

load-interval 30

 switchport access vlan 880

 spanning-tree bpdufilter enable

 no cdp enable

end

 

When I do a "sh spanning-tree vlan 880", I get

 

Spanning tree 880 is not currently active

The following parameters have been configured :

 

Stp Status         : Disabled

Protocol           : IEEE

Max Age (sec)      : 20

Hello time (sec)   : 2

Forward Delay (sec): 15

Bridge Priority    : 32768

 

You will notice that enabling BPDU filter on the interface is kind of
overkill if STP is disabled for VLAN 880 anyway.

 

But nonetheless, the IX guy gets the following when he 'no shuts' its
interface (where BPDU guard is enabled) :

 

.Jan 30 09:50:07: %LINK-3-UPDOWN: Interface GigabitEthernet2/5, changed
state to up

.Jan 30 09:50:07: %LINEPROTO-5-UPDOWN: Line protocol on Interface
GigabitEthernet2/5, changed state to up

Jan 30 09:50:07: %LINK-SP-3-UPDOWN: Interface GigabitEthernet2/5, changed
state to up

Jan 30 09:50:07: %LINEPROTO-SP-5-UPDOWN: Line protocol on Interface
GigabitEthernet2/5, changed state to up

.Jan 30 09:50:08: %SYS-5-CONFIG_I: Configured from console by pieter on vty0
(193.190.198.37)

.Jan 30 09:50:11: %LINEPROTO-5-UPDOWN: Line protocol on Interface
GigabitEthernet2/5, changed state to down

Jan 30 09:50:11: %SPANTREE-SP-2-BLOCK_BPDUGUARD: Received BPDU on port
GigabitEthernet2/5 with BPDU Guard enabled. Disabling port.

Jan 30 09:50:11: %PM-SP-4-ERR_DISABLE: bpduguard error detected on Gi2/5,
putting Gi2/5 in err-disable state

.Jan 30 09:50:11: %LINK-3-UPDOWN: Interface GigabitEthernet2/5, changed
state to down

Jan 30 09:50:11: %LINEPROTO-SP-5-UPDOWN: Line protocol on Interface
GigabitEthernet2/5, changed state to down

Jan 30 09:50:11: %LINK-SP-3-UPDOWN: Interface GigabitEthernet2/5, changed
state to down

Jan 30 09:50:11: %PM-SP-STDBY-4-ERR_DISABLE: bpduguard error detected on
Gi2/5, putting Gi2/5 in err-disable state

 

Does anybody have a clue ?

 

It's IOS (tm) C3500XL Software (C3500XL-C3H2S-M), Version 12.0(5)WC13,
RELEASE SOFTWARE (fc1)

 

Vincent