[c-nsp] MLPPP not working

[Oliver Boehmer (oboehmer)]

Yes, AAA is the culprit, you have aaa authorization network configured
with Radius, and Multilink now asks for LCP authorization and fails (no,
I don't have a crystal ball, Chris provided addtl. details offline ;-).
Adding 
 
aaa authorization network NOAUTH none
!
interface Serial1/0:0
 ppp authorization NOAUTH
 
resolved the issue, just to close the loop.
 
    oli

________________________________

From: Chris Lane [mailto:clane1875 at gmail.com] 
Sent: Tuesday, August 29, 2006 7:17 PM
To: Oliver Boehmer (oboehmer); cisco-nsp at puck.nether.net
Subject: Fwd: [c-nsp] MLPPP not working


Could it be a AAA issue, in my 7200 router i found this in config:
aaa authentication ppp default if-needed group radius local

I see in the debugs it gets denied at the AAA request.

---------- Forwarded message ---------- 
From: Chris Lane <clane1875 at gmail.com>
Date: Aug 29, 2006 12:53 PM
Subject: RE: [c-nsp] MLPPP not working
To: cisco-nsp at puck.nether.net, oboehmer at cisco.com


sorry for the change of email address.
Hope this helps, thanks 

7206 VXR
interface Multilink1
 ip address x.x.x.x
 ip flow ingress
 no cdp enable
 ppp multilink
 multilink-group 1
 no clns route-cache 

interface Serial1/0:0
 no ip address
 ip flow ingress
 encapsulation ppp
 no ip route-cache cef
 no fair-queue
 ppp multilink
 multilink-group 1
 no clns route-cache 

2620
interface Multilink1 
 ip address x.x.x.x
 no cdp enable
 ppp multilink
 ppp multilink group 1

interface Serial0/0
 no ip address
 encapsulation ppp
 no ip mroute-cache
 no fair-queue
 ppp multilink
 ppp multilink group 1 

Debug ppp negotiation
01:04:35: Se0/0 LCP: I CONFREQ [TERMsent] id 23 len 30
01:04:35: Se0/0 LCP:    MagicNumber 0xF07C1ECF (0x0506F07C1ECF)
01:04:35: Se0/0 LCP:    MRRU 1500 (0x110405DC)
01:04:35: Se0/0 LCP:    EndpointDisc 1 br-1bp-bos-ma
(0x13100162722D3162702D626F732D6D61) 
01:04:35: Se0/0 LCP: Dropping packet, state is TERMsent
01:04:35: Se0/0 LCP: Timeout: State TERMsent
01:04:35: Se0/0 LCP: State is Closed
01:04:35: Se0/0 PPP: Phase is DOWN
01:04:35: Se0/0 PPP: Phase is ESTABLISHING, Passive Open 
01:04:35: Se0/0 LCP: State is Listen

Thank you
Chris
-----Original Message-----
From: Oliver Boehmer (oboehmer) [mailto: oboehmer at cisco.com
<mailto:oboehmer at cisco.com> ]
Sent: Tuesday, August 29, 2006 12:42 PM 
To: Christopher Lane; cisco-nsp at puck.nether.net
Subject: RE: [c-nsp] MLPPP not working


Christopher Lane <> wrote on Tuesday, August 29, 2006 6:28 PM:

> I hhave two T1's  and  have added MLPPP to routers on both sides and 
> cannot seem to bond.
> I have removed one of the T1s so i could remotely connect to far side,

> and work on adding one t1 to MLPPP but cannot get it to work. 
> Here is output, any help would be appreciated.
> This is a Cisco 2620 with IOS c2600-i-mz.123-20 The near end is a 7206

> VXR with IOS: c7200-ik91s-mz.122-25.S7
> 
> 
> interface Multilink1 
> ip address x.x.x.x/30
> no cdp enable
> ppp multilink
> multilink-group 1
> 
> interface Serial0/0
> no ip address
> encapsulation ppp
> no ip route-cache
> no ip mroute-cache 
> no fair-queue
> ppp multilink
> multilink-group 1
> 
> sh int multilink 1
> Multilink1 is down, line protocol is down Hardware is multilink group 
> interface

There is not enough information to diagnose the problem, the config of
the remote end is missing. "debug ppp negotation" on the routers would
help as well to find out why the bundle is not coming up. 

    oli

P.S: Not sure if it affects multilink bundle members, but pls configure
"ip route-cache" on s0/0. It surely doesn't hurt..




-- 
******************** 
* Chris Lane      * 
* 401.662.1875  *
* ****************** 


-- 
********************
* Chris Lane      *
* 401.662.1875  *
* ******************