MSFC - cannot ping vlan interface

[pokwan]

Hi,

We have several vlans defined on the mfsc. On the msfc we could ping all the vlans interface except 1 vlan. The interface is up and just recently we weren't able to ping it. Any help is much appreciated.

TIA.

PF

[s.salimpoor]

Would you please give the information of "show runnig" & "show vlan" information?

[pokwan]

Salimpoor,

Thanks for the reply. I have enclosed the config.

The problem I have is with vlan 110. The others are fine.

Thanks.

PF

[amit-singh]

PF,

This is could be due to the ACL applied on this interface. You have accesslist 100 binded on this interface. Could you please let us know the source IP from where you are trying to ping the Vlan 110 interface. Make sure that you have your ACL defined correct.

HTH,

-amit singh

[pokwan]

Amit,

I am pinging from the msfc. So the access-list shouldn't matter here. Correct?

Thanks.

PF

[amit-singh]

Please paste the output of " show int vlan 110 ". What happens when you take the ACL out of it.

regards,

-amit singh

[pokwan]

Amit,

Removing the access-list works. It would be good to hear your explanation for it.

Thanks.

PF

[amit-singh]

Hi PF,

AFAIK, When you are pinging a particular interface stting on the MSFC the source IP would be of any other available interfaces. If you are pinging vlan 110 it will take source ip of any other available vlan interface and the destination is Vlan 110, but ACL defined on the interface doesnot have any ACE for the same so that packets will be dropped.

Removing the ACL worked as explained above.

regards,

-amit singh

[pokwan]

Thanks Amit.

PF