09-06-2006 03:54 PM - edited 03-03-2019 01:53 PM
We are switching to multilink ppp, bundling (aggregating?) two T1 lines (serial interfaces on a 3725 router). I think I understand a basic multilink ppp config, but not how to apply in / out traffic ACLs. Sample multilink ppp configs I've come across don't show how/where ACLs get applied, except one IOS Config doc about multilink PPP and QoS explains using class-map and policy-map commands and I see we can apply ACLs that way. Is that what we should do?
(We currently apply the ACLs to each serial interface using the access-group command -- the T1's are not bundled -- and the serials use HDLC and cef)
Thanks for any help.
09-06-2006 03:59 PM
Hi,
When using multilink PPP, the IP interface is the actual multilink interface. Therefore, you should apply all ACLs or QoS policies to the multilink interface.
Hope that helps - pls do rate the post if it does.
Paresh
09-07-2006 05:27 AM
Thanks. Do I simply apply the same command access-group (i.e. access-group 101 in) on the IP interface just like we have now on the serials? Not sure, as the doc "Using Multilink PPP over Serial Interfaces" --
-- says I am *required* to use the class-map and policy-map commands, as in:
class-map match-any traffic-in
match access-group name incoming
policy-map in
class traffic-in
class-map match-any traffic-out
match access-group name outgoing
policy-map out
class traffic-out
on the IP interface:
service-policy output out
service-policy input in
09-07-2006 06:30 AM
jresnickehrlich - to simply answer your question - no, you do not have to use it to make mu1 interface work.
09-06-2006 08:17 PM
Hi,
Whenever you configure MultiLink, then the multilink interface becomes the L-3 interface for all the member L-1/L-2 Interfaces e.g. even the IP Addresses are configured on the Multilink Interfaces hence all other L-3 configurations ie ACLs etc.
Kind Regards,
Wilson Samuel
PS: Please rate, if it helps
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