i am facing issue with acl. actually one of my customer reported an issue that he able to configure extended acl with multiport port number in single acl but when the same is going to configure on 6509 not taking the same. My query is that it is possible to configure the acl with multiport port number in single. I have tried also but not able to do the same i send the example of acl
ip access-list 100 permit tcp any any eq 80 20 21.Please help me out from this issue
In your original post you mention a 6509 and in a later post a 3745. Since these do not run exactly the same IOS, the issue might be as simple as that. I.e. supported syntax for an extended ACL might be slightly different.
I understand your concern, but with different IOSs, I suspect there's no guarantee that all syntax will be exactly the same. However, in some cases you might be able to use a common syntax. For instance, if the two platforms don't share exactly the same multiport ACL syntax, then they might be able to share ACL syntax for mapping individual ports. I.e. you trade off a more advanced syntax, available on one platform, for syntax that can be use by both platforms. (I've done this myself while in a transition from one IOS version to a newer version, even on the same platform, to avoid supporting two different syntax versions for about the same function.)
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