Require Private Vlan config

Unanswered Question
Feb 14th, 2009

I want to configure private vlan on l3 cisco 3750 switch.

Can any one tell me the config,Pls find the attachment.

I have this problem too.
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Giuseppe Larosa Sat, 02/14/2009 - 04:18

Hello Arjun,

after seen your picture I would take a different approach using VRF lite if the target is to avoid the two service providers CE nodes to talk to each other.

here are the links to private vlan config for c3750

see the section private vlans and SVIs

I see in 12.2(44)SE for C3750 no chapter for VRF lite.

Hope to help


arjunsawant Mon, 02/16/2009 - 02:51


I want to my two ISP should not communicate to firewall port.

Is it possible?

If yes what could be the config?


Giuseppe Larosa Mon, 02/16/2009 - 06:56

Hello Arjun,

I'm not sure that I've understood correctly.

if the switch is acting as L3 switch you can simply configure an ACL on the SVI towards the FW to deny direct communication.

Hope to help



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