Prefix-list

[deepanprasanth]

Why Prefix-list are used instead of access-list in routing protocols ? what make the difference ?

Can we use access-list in routing protocols ?

[Manish Gogna]

Hi,

You can refer the following links which discuss similar query as yours

https://supportforums.cisco.com/discussion/13171356/access-list-vs-prefix-list

http://networkengineering.stackexchange.com/questions/789/difference-between-access-list-and-prefix-list

HTH

Manish

[Julio E. Moisa]

Hi

These links can be useful, both can work similar but prefix list have some differences, for example prefix list can be used to announce a range of prefixes allowing or denying based on the subnet masks in to a routing protocol, they have a way to be more easy to interpretate. 

Prefix lists let you deny traffic based on the subnet mask of the incoming connection. A prefix list is generally used with a route map to filter out traffic that you don’t want, or which poses a security risk, from the network.

Prefix lists are different from access lists. Access lists can be used to control traffic on the basis of several additional parameters, like ports, destination and source. Access lists can only check for bits, but not the subnet mask of the incoming request. Prefix lists can check for both bits as well as subnet masks, giving them an edge over access lists in most cases.

https://mellowd.co.uk/ccie/?p=447

http://packetlife.net/blog/2010/feb/1/understanding-ip-prefix-lists/

Hope it is useful.