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Webcast-Catalyst9k
New Member

Access-list problem

I have a problem with access list on C3750 box. I want to deny all packets with IP options. Access list is as follows:

5 permit igmp any any

10 deny ip any any option any-options

20 permit ip any any

When I attach this acl to the interface, almost all traffic is denied, even ICMP!

The same result arises when I deny only one selected option, for instance source routing.

Is there a bug in IOS ? I use ADVIPSERVICESK9, 12.2(25).

2 REPLIES

Re: Access-list problem

You have probably found the URL below:

http://www.cisco.com/en/US/products/sw/iosswrel/ps5207/products_feature_guide09186a00801d4a7d.html#wp1027265

You might want to try "no ip options" as documented under "Where to go next", near the bottom of the doc.

Hope this helps,

Regards,

Leo

New Member

Re: Access-list problem

On 3750 with my IOS this command is not implemented.

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