09-08-2008 11:40 AM - edited 03-03-2019 11:27 PM
I can build out both multilinks, assign the serial interfaces to their respective groups, but I cannot get both up/up at the same time. If I were to unplug one set of serials, or shut down one of the Multilinks, the other will then come up. I cannot find anywhere on cisco if there are limitations for a 2801 to handle more than one multlink. Can anyone shed any light?
Thanks in advance
09-08-2008 11:50 AM
Hello there!
I had some problems myself related to a 2821 so maybe I can help. Can we see some config that you there?
On both ends you have 2800 series?
Cheers,
Calin
09-09-2008 10:23 AM
I have two multilink ppp interfaces running simultaneously on 2801's with no problem. Each has two T1's assigned to it. I know that there are some limits as to what queuing strategy you can use. I have fair-queuing disabled, and am using separate multilink bundle id's. Here is a sample config:
!
interface Multilink1
bandwidth 3072
ip address 10.x.y.z 255.255.255.252
ppp multilink
ppp multilink group 1
!
interface Multilink3
bandwidth 3072
ip address 10.w.x.y 255.255.255.252
ppp multilink
ppp multilink group 3
!
interface Serial0/1/0
bandwidth 1536
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 1
!
interface Serial0/1/1
bandwidth 1536
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 1
!
interface Serial0/3/0
bandwidth 1536
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 3
!
interface Serial0/3/1
bandwidth 1536
no ip address
encapsulation ppp
no fair-queue
ppp multilink
ppp multilink group 3
!
09-09-2008 11:54 AM
Hi
can you post the output of show interface multilink and serial command ?
also are you seeing any error logs in your router when u plugin the links or when u disconnect the links ?
regds
09-09-2008 02:09 PM
Hello,
A nice hidden command is " sh ppp multilink internal"
Check to see who the box thinks the links are connected to.
Not sure if you got this resolved but you can always add the peer ip address to make sure the bundles do not get confused
as to who there suppose to be connected to
interface Multilink120
ip address x.x.x.1 255.255.255.0
peer default ip address x.x.x.2 ----- remote multilink ip address
ppp multilink
ppp multilink group 120
interface Serial5/0/0
no ip address
encapsulation ppp
ppp multilink
ppp multilink group 120
ppp timeout retry 1
Thx Steve
09-10-2008 06:45 AM
Thanks to all so far.
So, first off I had the cards in slot 1 and 2. So the only difference between mine and Norman's was the slots and the queuing. I adjusted the queuing first, still nothing.
I then swapped the cards to slots 1 and 3, redid the config to match the serials, still nothing I get the same responses when I "debug ppp multilink events.
*Sep 10 14:11:32.371: Se0/2/0:0 MLP: Request add link to bundle
*Sep 10 14:11:32.371: Se0/2/0:0 MLP: Adding link to bundle
*Sep 10 14:11:32.371: Se0/2/0:0 MLP: Bundle Mu3(Router) in different multilink group
*Sep 10 14:11:32.371: Se0/2/0:0 MLP: Link not added to bundle
Steve, your suggestion to add the peer address, didn't solve it either, but I was unaware of that command and going to include it.
I appreciate everyone's input, but it was decided to bring in a 2nd router to handle the second Multilink. Now I get to worry about failover between the 2. LOL
Thanks again, and if you happen to stumble across the answer, please post, as I might have a need for it down the road
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