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3COM 5500G-EI receive "INCOMPLIANCE-Protection port"

Michael_W
Occasional Advisor

3COM 5500G-EI receive "INCOMPLIANCE-Protection port"

Hi, Im configuring a 3COM 5500G EI switch as a core, after I enable it stp, it keep prompting this message:

 

%Jan 15 05:23:08:878 2005 5500G-EI MSTP/3/BPDUFRMTINCMPLNC:- 1 -Instance0's INCOMPLIANCE-Protection port GigabitEthernet1/0/26 receive incompliant message!


port 1/0/26 is connected to HP2530G 8ports access switch which stp are also enabled.

 

Is this cause by incompatible 802.1D standard between these 2 switches? If yes, how should I solve this issues?

 

Regards

Michael

 

 

P.S. This thread has been moevd from Switching > Legacy to Comware-Based. - Hp forum moderator

 

2 REPLIES
Apachez-
Trusted Contributor

Re: 3COM 5500G-EI receive "INCOMPLIANCE-Protection port"

Looks like incomplete versions of STP between your devices... fix that and you wont see the message any longer.

Andrea_Spaziani
Occasional Visitor

Re: 3COM 5500G-EI receive "INCOMPLIANCE-Protection port"

HI Michael_W,

correct, this is an incompatibility between the two switch, probably the root has a different STP/MSTP (more recent).

Set it to legacy mode, this is from manual of our HP switch: 

 
Setting spanning tree to operate in 802. ID legacy mode

Syntax:

[no] spanning-tree legacy-mode

Forces spanning tree to operate in legacy (802.1D) mode.

Default: MSTP-operation.

The no form of this command returns the switch to the default 802.1s native mode (MSTP-operation)

Setting spanning tree to operate with 802. 1D legacy path cost values

Syntax:
spanning-tree legacy-path-cost

Forces spanning tree to operate with legacy (802.1D) path cost values.

Default: 802.1t.

The no form of the command returns the switch to the default 802.1t (not legacy) path cost values.