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New Member

Confusing ACL

I came across this ACL command during the course of my studies and didn't understand it.  Up until I saw this I hadn't seen anything above the multicast range be used as the destination address in an ACL.  What traffic would this identify?  How would this affect an inbound distribute list?

access-list 101 permit ip 10.10.0.0 0.0.0.0 255.255.224.0 0.0.0.0

Thanks

1 ACCEPTED SOLUTION

Accepted Solutions
Hall of Fame Super Bronze

Re: Confusing ACL

That's for filtering a supernet 10.10.0.0/19

Much easier to write it as a prefix list

Please refer to this article for more info:

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00801310cb.shtml#acclists

4 REPLIES
Hall of Fame Super Bronze

Re: Confusing ACL

That's for filtering a supernet 10.10.0.0/19

Much easier to write it as a prefix list

Please refer to this article for more info:

http://www.cisco.com/en/US/tech/tk365/technologies_tech_note09186a00801310cb.shtml#acclists

New Member

Re: Confusing ACL

So something like

ip prefix-list PFX_TEST permit 10.10.0.0/19

would do the same thing?

Hall of Fame Super Bronze

Re: Confusing ACL

Yes

New Member

Re: Confusing ACL

Thanks Edison

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