disable STP on SG200?

[mdschomburg]

I am trying to connect an SG200 to a customer's existing network. The customer does not want to receive any bpdu frames from the SG200. The customer's port has bpdu guard configured to err-disable their port upon receipt of a bpdu.

How do I completely disable spanning tree on the SG200 so that it does not send any bpdus?

[jimmysands73_2 · Accepted solution]

BPDU Filter would disable sending/recv'g (processing) any BPDUs I believe.

Its the equipvilant of turning off spanning tree.

I have never worked on that model, but found this:

http://www.cisco.com/en/US/docs/switches/lan/csbss/sg200/administration_guide/78-19562.pdf

page 119 has your answer.

Edit: On page 121 its list how to disable spanning tree per port.

[Jan Rolny]

Hi Mike,

you should not disable STP functionality on switch because it prevents forming loops. So customer switch port connected to your swtch should be configured respectively.

I think you cannot disable STP on whole switch. You can just stop it on port basis with this commands.

spanning-tree portfast

spanning-tree bpdufilter enable

But i strongly do not recommend it to you.

Jan

[paul driver]

Hello

I agree with JAN

I wouldn't disable STP  also BPDU filtering, If applied on a interface,  will filter BPDUs regardless of portfast operational state - as stated, Its the same as disabling spanning tree on that port and could result in spanning-tree loops.

I suppose you could use the switch as a hub switch and attached it via a access port assigned to one specific vlan, but again its really not recomended.

res

Paul

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