From: Joseph Saad (joseph.samir.saad@gmail.com)
Date: Sun Oct 21 2007 - 00:28:10 ART
Fundamentally, the line between source and destination is dimming. You need
to understand that an Access-list are used for "matching"
So, a standard Access list can be used to match:
1) Routes. Route-maps and filtering
2) Multicast Groups. RP and MA filtering
3) Source addresses in Access Control List (ACL's) if applied in
access-group.
Extended access-list can be used to match source and destination, so they
can be used in.
1) Source-Specific Multicasting. To tie a group to a source.
2) Matching a range of prefixes with the destination representing the subnet
(though prefix-lists would be much better).
3) source/destination in ACL's.
The list is not comprehensive, but hope you got the "context" idea.
Joseph.
On 10/18/07, Navid Daghighi <daghighi.navid@free.fr> wrote:
>
> Hi,
>
> Is it correct to say that the command MATCH IP ADDRESS (in route-map
> configuration mode) can match either the DESTINATION address or the
> SOURCE address of a packet.
>
> Cisco doc says here "destination address"
>
>
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipr_c/ipcprt2/1cfindep.htm#wp1001439
>
> Cisco doc does not say much here, whether it is a destination or source
> address :
>
>
> http://www.cisco.com/univercd/cc/td/doc/product/software/ios122/122cgcr/fipr_c/ipcprt2/1cfindep.htm#wp1001097
>
>
> So ... when will the destination address be checked ? when will the
> source address be checked ?
>
> thanks,
> Navid
>
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