[c-nsp] PPPoA DSL up/up, no traffic

Scott Granados gsgranados at comcast.net
Tue Oct 2 16:14:06 EDT 2007


I think that's correct, I took my example from the Cisco documentation and 
it just happened to work.  :)  Other folks had mentioned issues with the 
pvc.  In our lab setting we saw almost the same situation with an ATM 
circuit with incrimenting output numbers and no input packets.  Deleting and 
readding the PVC, as previously mentioned fixed this.

----- Original Message ----- 
From: "Siva Valliappan" <svalliap at cisco.com>
To: "Scott Granados" <gsgranados at comcast.net>
Cc: "Adam Greene" <maillist at webjogger.net>; <cisco-nsp at puck.nether.net>
Sent: Tuesday, October 02, 2007 1:07 PM
Subject: Re: [c-nsp] PPPoA DSL up/up, no traffic


>i think the ATM encap is dependent on the provider and their equipeent. for 
>my provider I have been using aal5snap.  the most common encap used
> to be AAL5SNAP (a few years back).
>
> On Tue, 2 Oct 2007, Scott Granados wrote:
>
>> I could be wrong but I think you have your encapsulation wrong.
>>
>> interface ATM0/0
>> no ip address
>> no ip mroute-cache
>> no atm ilmi-keepalive
>> dsl operating-mode auto
>> pvc 0/35
>>  encapsulation aal5mux ppp dialer
>>  dialer pool-member 1
>> !
>> !
>>
>> ----- Original Message -----
>> From: "Adam Greene" <maillist at webjogger.net>
>> To: <cisco-nsp at puck.nether.net>
>> Sent: Tuesday, October 02, 2007 10:58 AM
>> Subject: [c-nsp] PPPoA DSL up/up, no traffic
>>
>>
>>> Hi,
>>>
>>> I'm trying to configure a DSL line on a Cisco 1841 (C1841-IPBASE-M),
>>> Version
>>> 12.4(1c).
>>>
>>> The atm interface is plugged into a DSL line, it shows up/up, I have
>>> packets
>>> going out, but none coming back in.
>>>
>>> Do I have to do something in particular to initiate the connection? Are
>>> there obvious errors with the config? Perhaps I need to contact the ISP.
>>>
>>> Disclaimer: this is the first DSL line I've ever configured (might be
>>> obvious).
>>>
>>> Thanks for the help.
>>> Adam
>>>
>>>
>>> Here are the configurations so far, and some command / debug output:
>>>
>>> ========
>>> CONFIGS
>>> ========
>>>
>>> !
>>> aaa new-model
>>> !
>>> aaa session-id common
>>> !
>>> mmi polling-interval 60
>>> no mmi auto-configure
>>> no mmi pvc
>>> !
>>> interface FastEthernet0/0
>>> ip address x.x.x.x 255.255.252.0
>>> duplex auto
>>> speed auto
>>> !
>>> interface ATM0/0/0
>>> no ip address
>>> no ip mroute-cache
>>> no atm ilmi-keepalive
>>> dsl operating-mode auto
>>> hold-queue 224 in
>>> pvc 0/35
>>>  encapsulation aal5snap
>>>  protocol ppp dialer
>>>  dialer pool-member 1
>>> !
>>> interface Dialer1
>>> ip address negotiated
>>> ip mtu 1492
>>> encapsulation ppp
>>> no ip mroute-cache
>>> dialer pool 1
>>> dialer idle-timeout 0
>>> dialer-group 1
>>> ppp authentication pap callin
>>> ppp pap sent-username **** password 7 ****
>>> !
>>> ip route 0.0.0.0 0.0.0.0 Dialer1
>>> !
>>> dialer-list 1 protocol ip permit
>>> !
>>> end
>>>
>>>
>>> =============
>>> SH INT ATM0/0/0
>>> =============
>>>
>>> ATM0/0/0 is up, line protocol is up
>>>  Hardware is DSLSAR (with Alcatel ADSL Module)
>>>  MTU 4470 bytes, sub MTU 4470, BW 832 Kbit, DLY 610 usec,
>>>     reliability 255/255, txload 1/255, rxload 1/255
>>>  Encapsulation ATM, loopback not set
>>>  Encapsulation(s): AAL5  AAL2, PVC mode
>>>  23 maximum active VCs, 256 VCs per VP, 1 current VCCs
>>>  VC Auto Creation Disabled.
>>>  VC idle disconnect time: 300 seconds
>>>  Last input never, output 00:00:17, output hang never
>>>  Last clearing of "show interface" counters never
>>>  Input queue: 0/224/0/0 (size/max/drops/flushes); Total output drops: 0
>>>  Queueing strategy: Per VC Queueing
>>>  5 minute input rate 0 bits/sec, 0 packets/sec
>>>  5 minute output rate 0 bits/sec, 0 packets/sec
>>>     0 packets input, 0 bytes, 0 no buffer
>>>     Received 0 broadcasts, 0 runts, 0 giants, 0 throttles
>>>     0 input errors, 0 CRC, 0 frame, 0 overrun, 0 ignored, 0 abort
>>>     66050 packets output, 1056800 bytes, 0 underruns
>>>     0 output errors, 0 collisions, 0 interface resets
>>>     0 output buffer failures, 0 output buffers swapped out
>>>
>>> ======================
>>> DEBUG PPP NEGOTIATION
>>> ======================
>>> *Oct  2 15:51:10.173: %LINK-3-UPDOWN: Interface ATM0/0/0, changed state 
>>> to
>>> up
>>> *Oct  2 15:51:13.173: %LINEPROTO-5-UPDOWN: Line protocol on Interface
>>> ATM0/0/0,
>>> changed state to up
>>> *Oct  2 15:51:13.173: %LINK-3-UPDOWN: Interface Virtual-Access2, changed
>>> state to up
>>> *Oct  2 15:51:13.173: %DIALER-6-BIND: Interface Vi2 bound to profile Di1
>>> *Oct  2 15:51:13.173: Vi2 PPP: Using dialer call direction
>>> *Oct  2 15:51:13.173: Vi2 PPP: Treating connection as a callout
>>> *Oct  2 15:51:13.173: Vi2 PPP: Session handle[EF000004] Session id[2]
>>> *Oct  2 15:51:13.173: Vi2 PPP: Phase is ESTABLISHING, Active Open
>>> *Oct  2 15:51:13.173: Vi2 PPP: No remote authentication for call-out
>>> *Oct  2 15:51:13.173: Vi2 LCP: O CONFREQ [Closed] id 173 len 10
>>> *Oct  2 15:51:13.173: Vi2 LCP:    MagicNumber 0x2FA57203 
>>> (0x05062FA57203)
>>> *Oct  2 15:51:15.161: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:51:15.161: Vi2 LCP: O CONFREQ [REQsent] id 174 len 10
>>> *Oct  2 15:51:15.161: Vi2 LCP:    MagicNumber 0x2FA57203 
>>> (0x05062FA57203)
>>> *Oct  2 15:51:17.177: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:51:17.177: Vi2 LCP: O CONFREQ [REQsent] id 175 len 10
>>> *Oct  2 15:51:17.177: Vi2 LCP:    MagicNumber 0x2FA57203 
>>> (0x05062FA57203)
>>> *Oct  2 15:51:19.193: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:51:19.193: Vi2 LCP: O CONFREQ [REQsent] id 176 len 10
>>> *Oct  2 15:51:19.193: Vi2 LCP:    MagicNumber 0x2FA57203 
>>> (0x05062FA57203)
>>> *Oct  2 15:51:21.209: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:51:21.209: Vi2 LCP: O CONFREQ [REQsent] id 177 len 10
>>> *Oct  2 15:51:21.209: Vi2 LCP:    MagicNumber 0x2FA57203 
>>> (0x05062FA57203)
>>> *Oct  2 15:51:23.225: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:51:23.225: Vi2 LCP: O CONFREQ [REQsent] id 178 len 10
>>> *Oct  2 15:51:23.225: Vi2 LCP:    MagicNumber 0x2FA57203 
>>> (0x05062FA57203)
>>> *Oct  2 15:51:25.241: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:51:25.241: Vi2 LCP: O CONFREQ [REQsent] id 179 len 10
>>> *Oct  2 15:51:25.241: Vi2 LCP:    MagicNumber 0x2FA57203 
>>> (0x05062FA57203)
>>> *Oct  2 15:51:27.257: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:51:27.257: Vi2 LCP: O CONFREQ [REQsent] id 180 len 10
>>> *Oct  2 15:51:27.257: Vi2 LCP:    MagicNumber 0x2FA57203 
>>> (0x05062FA57203)
>>> *Oct  2 15:51:29.273: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:51:29.273: Vi2 LCP: O CONFREQ [REQsent] id 181 len 10
>>> *Oct  2 15:51:29.273: Vi2 LCP:    MagicNumber 0x2FA57203 
>>> (0x05062FA57203)
>>> *Oct  2 15:51:31.289: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:51:31.289: Vi2 LCP: O CONFREQ [REQsent] id 182 len 10
>>> *Oct  2 15:51:31.289: Vi2 LCP:    MagicNumber 0x2FA57203 
>>> (0x05062FA57203)
>>> *Oct  2 15:51:33.305: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:51:33.305: Vi2 LCP: State is Listen
>>> *Oct  2 15:52:03.321: Vi2 LCP: TIMEout: State Listen
>>> *Oct  2 15:52:03.321: Vi2 PPP: No remote authentication for call-out
>>> *Oct  2 15:52:03.321: Vi2 LCP: O CONFREQ [Listen] id 183 len 10
>>> *Oct  2 15:52:03.321: Vi2 LCP:    MagicNumber 0x2FA635E8 
>>> (0x05062FA635E8)
>>> *Oct  2 15:52:05.337: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:52:05.337: Vi2 LCP: O CONFREQ [REQsent] id 184 len 10
>>> *Oct  2 15:52:05.337: Vi2 LCP:    MagicNumber 0x2FA635E8 
>>> (0x05062FA635E8)
>>> *Oct  2 15:52:07.353: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:52:07.353: Vi2 LCP: O CONFREQ [REQsent] id 185 len 10
>>> *Oct  2 15:52:07.353: Vi2 LCP:    MagicNumber 0x2FA635E8 
>>> (0x05062FA635E8)
>>> *Oct  2 15:52:09.369: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:52:09.369: Vi2 LCP: O CONFREQ [REQsent] id 186 len 10
>>> *Oct  2 15:52:09.369: Vi2 LCP:    MagicNumber 0x2FA635E8 
>>> (0x05062FA635E8)
>>> *Oct  2 15:52:11.385: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:52:11.385: Vi2 LCP: O CONFREQ [REQsent] id 187 len 10
>>> *Oct  2 15:52:11.385: Vi2 LCP:    MagicNumber 0x2FA635E8 
>>> (0x05062FA635E8)
>>> *Oct  2 15:52:13.401: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:52:13.401: Vi2 LCP: O CONFREQ [REQsent] id 188 len 10
>>> *Oct  2 15:52:13.401: Vi2 LCP:    MagicNumber 0x2FA635E8 
>>> (0x05062FA635E8)
>>> *Oct  2 15:52:15.417: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:52:15.417: Vi2 LCP: O CONFREQ [REQsent] id 189 len 10
>>> *Oct  2 15:52:15.417: Vi2 LCP:    MagicNumber 0x2FA635E8 
>>> (0x05062FA635E8)
>>> *Oct  2 15:52:17.433: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:52:17.433: Vi2 LCP: O CONFREQ [REQsent] id 190 len 10
>>> *Oct  2 15:52:17.433: Vi2 LCP:    MagicNumber 0x2FA635E8 
>>> (0x05062FA635E8)
>>> *Oct  2 15:52:19.449: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:52:19.449: Vi2 LCP: O CONFREQ [REQsent] id 191 len 10
>>> *Oct  2 15:52:19.449: Vi2 LCP:    MagicNumber 0x2FA635E8 
>>> (0x05062FA635E8)
>>> *Oct  2 15:52:21.465: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:52:21.465: Vi2 LCP: O CONFREQ [REQsent] id 192 len 10
>>> *Oct  2 15:52:21.465: Vi2 LCP:    MagicNumber 0x2FA635E8 
>>> (0x05062FA635E8)
>>> *Oct  2 15:52:23.481: Vi2 LCP: TIMEout: State REQsent
>>> *Oct  2 15:52:23.481: Vi2 LCP: State is Listen
>>>
>>>
>>> =================
>>> DEBUG ATM EVENTS
>>> =================
>>> *Oct  2 17:56:16.976: ATM0/0/0 check_lockup: scc = 0, output_qcount = 0,
>>> head:(s)91, 92,
>>> addr = (s)0x0, 0x0, count (s)67719, 67720
>>> *Oct  2 17:56:16.976: ATM0/0/0 check_lockup: scc = 1, output_qcount = 0,
>>> head:(s)55, 55,
>>> addr = (s)0x0, 0x0, count (s)112, 112
>>> *Oct  2 17:56:26.936: ATM0/0/0 check_lockup: scc = 0, output_qcount = 0,
>>> head:(s)92, 92,
>>> addr = (s)0x0, 0x0, count (s)67720, 67720
>>> *Oct  2 17:56:26.936: ATM0/0/0 check_lockup: scc = 1, output_qcount = 0,
>>> head:(s)55, 55,
>>> addr = (s)0x0, 0x0, count (s)112, 112
>>> *Oct  2 17:56:36.932: ATM0/0/0 check_lockup: scc = 0, output_qcount = 0,
>>> head:(s)92, 92,
>>> addr = (s)0x0, 0x0, count (s)67720, 67720
>>> *Oct  2 17:56:36.932: ATM0/0/0 check_lockup: scc = 1, output_qcount = 0,
>>> head:(s)55, 55,
>>> addr = (s)0x0, 0x0, count (s)112, 112
>>>
>>>
>>>
>>>
>>>
>>>
>>>
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>>
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