[cisco-bba] LCP failing - any ideas?

[Damian Kissick]

Nathan,

Have you taken on any new customers - what number of sessions are you
running?

How are your customers terminated - dot1q or q-in-q subinterfaces?  Have
you checked to see whether you are hitting one of the many default PPPoE
Session Limits?

Might help to share your sanitised config.

 - Damian

On 24/05/16 21:13, Nathan Downes wrote:
>
> Hi,
>
>  
>
> This morning we started having a few clients unable to connect, I see
> the MAC addresses of the modems learnt on the core switch but LCP
> appears to fail.  It is across two providers so I can’t blame them
> (issues may be different for each of them)  Debugging PPP negotiation
> just repeats the below.
>
>  
>
> *May 24 18:42:08.611: ppp470 LCP: Event[Timeout-] State[REQsent to
> Stopped]
>
> *May 24 18:42:08.611: ppp470 LCP: Event[DOWN] State[Stopped to Starting]
>
> *May 24 18:42:08.611: ppp470 PPP: Clearing AAA Unique Id = B70
>
> *May 24 18:42:08.611: ppp470 PPP: Phase is DOWN
>
> *May 24 18:42:10.307: ppp475 LCP: O CONFREQ [REQsent] id 5 len 18
>
> *May 24 18:42:10.307: ppp475 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:10.307: ppp475 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:10.307: ppp475 LCP:    MagicNumber 0x1A8E4B9E
> (0x05061A8E4B9E)
>
> *May 24 18:42:10.307: ppp475 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:10.531: ppp472 LCP: O CONFREQ [REQsent] id 6 len 18
>
> *May 24 18:42:10.531: ppp472 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:10.531: ppp472 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:10.531: ppp472 LCP:    MagicNumber 0x1A8E449C
> (0x05061A8E449C)
>
> *May 24 18:42:10.531: ppp472 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:10.531: ppp476 LCP: O CONFREQ [REQsent] id 3 len 18
>
> *May 24 18:42:10.531: ppp476 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:10.531: ppp476 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:10.531: ppp476 LCP:    MagicNumber 0x1A8E5C44
> (0x05061A8E5C44)
>
> *May 24 18:42:10.531: ppp476 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:12.323: ppp475 LCP: O CONFREQ [REQsent] id 6 len 18
>
> *May 24 18:42:12.323: ppp475 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:12.323: ppp475 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:12.323: ppp475 LCP:    MagicNumber 0x1A8E4B9E
> (0x05061A8E4B9E)
>
> *May 24 18:42:12.323: ppp475 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:12.547: ppp472 LCP: O CONFREQ [REQsent] id 7 len 18
>
> *May 24 18:42:12.547: ppp472 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:12.547: ppp472 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:12.547: ppp472 LCP:    MagicNumber 0x1A8E449C
> (0x05061A8E449C)
>
> *May 24 18:42:12.547: ppp472 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:12.547: ppp476 LCP: O CONFREQ [REQsent] id 4 len 18
>
> *May 24 18:42:12.547: ppp476 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:12.547: ppp476 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:12.547: ppp476 LCP:    MagicNumber 0x1A8E5C44
> (0x05061A8E5C44)
>
> *May 24 18:42:12.547: ppp476 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:14.339: ppp475 LCP: O CONFREQ [REQsent] id 7 len 18
>
> *May 24 18:42:14.339: ppp475 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:14.339: ppp475 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:14.339: ppp475 LCP:    MagicNumber 0x1A8E4B9E
> (0x05061A8E4B9E)
>
> *May 24 18:42:14.339: ppp475 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:14.563: ppp472 LCP: O CONFREQ [REQsent] id 8 len 18
>
> *May 24 18:42:14.563: ppp472 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:14.563: ppp472 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:14.563: ppp472 LCP:    MagicNumber 0x1A8E449C
> (0x05061A8E449C)
>
> *May 24 18:42:14.563: ppp472 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:14.563: ppp476 LCP: O CONFREQ [REQsent] id 5 len 18
>
> *May 24 18:42:14.563: ppp476 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:14.563: ppp476 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:14.563: ppp476 LCP:    MagicNumber 0x1A8E5C44
> (0x05061A8E5C44)
>
> *May 24 18:42:14.563: ppp476 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:16.355: ppp475 LCP: O CONFREQ [REQsent] id 8 len 18
>
> *May 24 18:42:16.355: ppp475 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:16.355: ppp475 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:16.355: ppp475 LCP:    MagicNumber 0x1A8E4B9E
> (0x05061A8E4B9E)
>
> *May 24 18:42:16.355: ppp475 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:16.579: ppp472 LCP: O CONFREQ [REQsent] id 9 len 18
>
> *May 24 18:42:16.579: ppp472 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:16.579: ppp472 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:16.579: ppp472 LCP:    MagicNumber 0x1A8E449C
> (0x05061A8E449C)
>
> *May 24 18:42:16.579: ppp472 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:16.579: ppp476 LCP: O CONFREQ [REQsent] id 6 len 18
>
> *May 24 18:42:16.579: ppp476 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:16.579: ppp476 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:16.579: ppp476 LCP:    MagicNumber 0x1A8E5C44
> (0x05061A8E5C44)
>
> *May 24 18:42:16.579: ppp476 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:18.371: ppp475 LCP: O CONFREQ [REQsent] id 9 len 18
>
> *May 24 18:42:18.371: ppp475 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:18.371: ppp475 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:18.371: ppp475 LCP:    MagicNumber 0x1A8E4B9E
> (0x05061A8E4B9E)
>
> *May 24 18:42:18.371: ppp475 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:18.595: ppp472 LCP: O CONFREQ [REQsent] id 10 len 18
>
> *May 24 18:42:18.595: ppp472 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:18.595: ppp472 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:18.595: ppp472 LCP:    MagicNumber 0x1A8E449C
> (0x05061A8E449C)
>
> *May 24 18:42:18.595: ppp472 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
> *May 24 18:42:18.595: ppp476 LCP: O CONFREQ [REQsent] id 7 len 18
>
> *May 24 18:42:18.595: ppp476 LCP:    MRU 1492 (0x010405D4)
>
> *May 24 18:42:18.595: ppp476 LCP:    AuthProto PAP (0x0304C023)
>
> *May 24 18:42:18.595: ppp476 LCP:    MagicNumber 0x1A8E5C44
> (0x05061A8E5C44)
>
> *May 24 18:42:18.595: ppp476 LCP: Event[Timeout+] State[REQsent to
> REQsent]
>
>  
>
> As we handoff to the providers from the switch this one is connected
> to I have very few ways of following the traffic to the other side, I
> can see requests go out but they either don’t make it to CPE or the
> response doesn’t make it back.  Nothing has been changed networkwise
> in the last 3 months so bit lost. Have rebooted the switch just in
> case as it has been a year or so, but that just got more angry calls J 
>
>  
>
> CPE is just a simple modem on other side, no difference between
> working and non working ones, BRAS is a 7204vxr with a G2.  “core”
> switch is just a simple 3560g
>
>
>
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