I suppose you are referring to standard ACLs, in which case the ACL number has to be below 100 (1 through 99).
The standard ACL only checks against the source address, whereas the extended ACL (100 through 199)checks both the source and destination. Extnded ACL is a lot more powerful since it allows to specify the protocol, source and destination protocol ports, etc. etc.
Hope this helps,
Harold Ritter Sr. Technical Leader CCIE 4168 (R&S, SP) email@example.com México móvil: +52 1 55 8312 4915 Cisco México Paseo de la Reforma 222 Piso 19 Cuauhtémoc, Juárez Ciudad de México, 06600 México
thanks hritter, my doubts got cleared, also can i use "n" number of access-list in my router or does it hav eany limitation if i use Extended ACL or Standard ACL, already i have created ACL nearly 100 lines, so will it permit more than that also?
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