08-26-2010 03:42 AM - edited 03-04-2019 09:33 AM
Hi all,
my 877 Cisco Router is conected to an ADSL line. The CD light is ok but PPP light is off. This is the output of debug ppp negotiation command:
CPE#
*Mar 2 01:08:43.831: Vi2 LCP: Timeout: State Listen
*Mar 2 01:08:43.831: Vi2 PPP: No remote authentication for call-out
*Mar 2 01:08:43.831: Vi2 LCP: O CONFREQ [Listen] id 241 len 10
*Mar 2 01:08:43.831: Vi2 LCP: MagicNumber 0x25996C7C (0x050625996C7C)
CPE#
*Mar 2 01:08:45.847: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:08:45.847: Vi2 LCP: O CONFREQ [REQsent] id 242 len 10
*Mar 2 01:08:45.847: Vi2 LCP: MagicNumber 0x25996C7C (0x050625996C7C)
CPE#
*Mar 2 01:08:47.863: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:08:47.863: Vi2 LCP: O CONFREQ [REQsent] id 243 len 10
*Mar 2 01:08:47.863: Vi2 LCP: MagicNumber 0x25996C7C (0x050625996C7C)
CPE#debug atm events
ATM events debugging is on
CPE251#
*Mar 2 01:10:26.199: atmsar_vc_tx_start(82D7A904).
*Mar 2 01:10:26.199: ATM0:atmsar_dequeue_pak, dequeued a pak = 0x82B36A80
*Mar 2 01:10:26.199: atmsar_transmit_pak_wrapper: deq(82B36A80). vcd: 1.atmsar_transmit_pak_wrapper : encap = Data
CPE#
*Mar 2 01:10:28.215: atmsar_vc_tx_start(82D7A904).
*Mar 2 01:10:28.215: ATM0:atmsar_dequeue_pak, dequeued a pak = 0x82B37950
*Mar 2 01:10:28.215: atmsar_transmit_pak_wrapper: deq(82B37950). vcd: 1.atmsar_transmit_pak_wrapper : encap = Data
CPE#
*Mar 2 01:10:30.231: atmsar_vc_tx_start(82D7A904).
*Mar 2 01:10:30.231: ATM0:atmsar_dequeue_pak, dequeued a pak = 0x830F30A8
*Mar 2 01:10:30.231: atmsar_transmit_pak_wrapper: deq(830F30A8). vcd: 1.atmsar_transmit_pak_wrapper : encap = Data
CPE251#
*Mar 2 01:10:32.247: atmsar_vc_tx_start(82D7A904).
CPE#sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0 unassigned YES unset up down
FastEthernet1 unassigned YES unset up down
FastEthernet2 unassigned YES unset up down
FastEthernet3 unassigned YES unset up down
ATM0 unassigned YES NVRAM up up
ATM0.1 unassigned YES unset up up
Vlan1 192.168.250.1 YES NVRAM up down
NVI0 unassigned YES unset administratively down down
Dialer1 unassigned YES NVRAM up up
Virtual-Access1 unassigned YES unset up up
Virtual-Access2 unassigned YES unset up down
Thanks for your help!!
08-26-2010 03:44 AM
You have likely configured the wrong VCI/VPI numbers.
The alternative, is that the configuration by ISP side, is wrong or incomplete.
08-26-2010 03:53 AM
Hi Paolo,
I have checked and is the same as other lines of the same ISP to work correctly. (8 / 35).
Add my config. Thanks for your time.
interface ATM0
description DSL line Phone #913758086
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
no ip route-cache cef
no ip route-cache
no ip mroute-cache
no atm ilmi-keepalive
dsl operating-mode auto
dsl enable-training-log
hold-queue 224 in
!
interface ATM0.1 point-to-point
no ip route-cache
pvc 8/35
encapsulation aal5mux ppp dialer
dialer pool-member 1
interface Dialer1
ip address negotiated
ip mtu 1492
ip nat outside
ip virtual-reassembly
encapsulation ppp
ip tcp adjust-mss 1452
dialer pool 1
dialer-group 1
no cdp enable
ppp authentication chap pap callin
ppp chap hostname cpe@seaworld@xdsl
ppp chap password 7 03074B0E465D741D
ppp pap sent-username cpe@seaworld@xdsl password 7 06051F241E1B58
08-26-2010 04:03 AM
I'll talk to the ISP to verify
One more time thanks!!
08-26-2010 04:09 AM
Since you do not receive packets from ISP, mean something is broken their side.
Note:
no ip redirects
no ip unreachables
no ip proxy-arp
no ip route-cache cef
no ip route-cache
no ip mroute-cache
dsl enable-training-log
hold-queue 224 in
You do not need any of the above commands.
ip mtu 1492 <---- Should be "mtu 1492". Do debug ppp neg to understand why.
ip tcp adjust-mss 1452 <---- this goes under vlan interface, not Dialer
08-26-2010 04:32 AM
I don´t understand which is the difference when i configure ip mtu 1492 or mtu 1492.
CPE#debug ppp negotiation
PPP protocol negotiation debugging is on
CPE#
*Mar 2 01:51:22.823: Vi2 LCP: Timeout: State Listen
*Mar 2 01:51:22.823: Vi2 PPP: No remote authentication for call-out
*Mar 2 01:51:22.823: Vi2 LCP: O CONFREQ [Listen] id 239 len 10
*Mar 2 01:51:22.823: Vi2 LCP: MagicNumber 0x25C078BF (0x050625C078BF)
CPE#
*Mar 2 01:51:24.823: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:51:24.823: Vi2 LCP: O CONFREQ [REQsent] id 240 len 10
*Mar 2 01:51:24.823: Vi2 LCP: MagicNumber 0x25C078BF (0x050625C078BF)
CPE#
*Mar 2 01:51:26.839: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:51:26.839: Vi2 LCP: O CONFREQ [REQsent] id 241 len 10
*Mar 2 01:51:26.839: Vi2 LCP: MagicNumber 0x25C078BF (0x050625C078BF)
CPE#
*Mar 2 01:51:28.855: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:51:28.855: Vi2 LCP: O CONFREQ [REQsent] id 242 len 10
*Mar 2 01:51:28.855: Vi2 LCP: MagicNumber 0x25C078BF (0x050625C078BF)
CPE#und
*Mar 2 01:51:30.871: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:51:30.871: Vi2 LCP: O CONFREQ [REQsent] id 243 len 10
*Mar 2 01:51:30.871: Vi2 LCP: MagicNumber 0x25C078BF (0x050625C078BF)
CPE#undebu
*Mar 2 01:51:32.887: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:51:32.887: Vi2 LCP: O CONFREQ [REQsent] id 244 len 10
*Mar 2 01:51:32.887: Vi2 LCP: MagicNumber 0x25C078BF (0x050625C078BF)
CPE#undebug all
All possible debugging has been turned off
CPE251#conf t
Enter configuration commands, one per line. End with CNTL/Z.
CPE(config)#int di
CPE(config)#int dialer 1
CPE(config-if)#no ip mtu 1492
CPE(config-if)#ip mtu 1492
CPE(config-if)#end
CPE#d
*Mar 2 01:52:52.607: %SYS-5-CONFIG_I: Configured from console by ibx777 on console
CPE251#debug ppp negotiation
PPP protocol negotiation debugging is on
CPE#
*Mar 2 01:53:03.159: Vi2 LCP: Timeout: State Listen
*Mar 2 01:53:03.159: Vi2 PPP: No remote authentication for call-out
*Mar 2 01:53:03.159: Vi2 LCP: O CONFREQ [Listen] id 3 len 10
*Mar 2 01:53:03.159: Vi2 LCP: MagicNumber 0x25C200B1 (0x050625C200B1)
CPE#
*Mar 2 01:53:05.175: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:53:05.175: Vi2 LCP: O CONFREQ [REQsent] id 4 len 10
*Mar 2 01:53:05.175: Vi2 LCP: MagicNumber 0x25C200B1 (0x050625C200B1)
CPE#
*Mar 2 01:53:07.191: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:53:07.191: Vi2 LCP: O CONFREQ [REQsent] id 5 len 10
*Mar 2 01:53:07.191: Vi2 LCP: MagicNumber 0x25C200B1 (0x050625C200B1)
CPE#
*Mar 2 01:53:09.207: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:53:09.207: Vi2 LCP: O CONFREQ [REQsent] id 6 len 10
*Mar 2 01:53:09.207: Vi2 LCP: MagicNumber 0x25C200B1 (0x050625C200B1)
CPE#
*Mar 2 01:53:11.223: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:53:11.223: Vi2 LCP: O CONFREQ [REQsent] id 7 len 10
*Mar 2 01:53:11.223: Vi2 LCP: MagicNumber 0x25C200B1 (0x050625C200B1)
CPE#
*Mar 2 01:53:13.239: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:53:13.239: Vi2 LCP: O CONFREQ [REQsent] id 8 len 10
*Mar 2 01:53:13.239: Vi2 LCP: MagicNumber 0x25C200B1 (0x050625C200B1)
CPE#und
*Mar 2 01:53:15.255: Vi2 LCP: Timeout: State REQsent
*Mar 2 01:53:15.255: Vi2 LCP: O CONFREQ [REQsent] id 9 len 10
*Mar 2 01:53:15.255: Vi2 LCP: MagicNumber 0x25C200B1 (0x050625C200B1)
CPE#undebug all
08-26-2010 05:17 AM
You cannot see it now.
You will see it when the circuit is working.
08-26-2010 08:32 AM
Try "debug ppp authentication" - it might be that your PPP negotiation is failing because of an authentication error.
08-26-2010 08:36 AM
mfurnival wrote:
Try "debug ppp authentication" - it might be that your PPP negotiation is failing because of an authentication error.
Incorrect, authentication happens after negotiation, that fails because no PPP packets are ever received.
08-27-2010 04:29 AM
I think the problem is the bundle-enable command. I can´t set it but in the config of the other line that actually working right appears it:
c870-advipservicesk9-mz.124-6.T9.bin"
interface ATM0
description DSL line Phone #914572301
no ip address
no ip redirects
no ip unreachables
no ip proxy-arp
no ip route-cache cef
no ip route-cache
no ip mroute-cache
no atm ilmi-keepalive
bundle-enable
dsl operating-mode auto
dsl enable-training-log
hold-queue 224 in
In this IOS (c870-advsecurityk9-mz.124-15.T7.bin), i can´t set it. Someone knows why? Thanks
08-27-2010 12:44 PM
No, that is not the problem.
Want to prove it? Try onbe of these adsl modems that the ISP give for free, you should not be able to connect anyway.
08-28-2010 02:17 AM
I tested with a free router and a technician from my ISP and sync properly. I placed the router that was used in the old headquarters still does not turn the light PPP
CPE3#sh ip int brief
Interface IP-Address OK? Method Status Protocol
FastEthernet0 unassigned YES unset up up
FastEthernet1 unassigned YES unset up down
FastEthernet2 unassigned YES unset up down
FastEthernet3 unassigned YES unset up down
ATM0 unassigned YES NVRAM up up
ATM0.1 unassigned YES unset up up
Vlan1 192.168.100.1 YES NVRAM up up
NVI0 unassigned NO unset up up
Dialer1 unassigned YES NVRAM up up
Virtual-Access1 unassigned YES unset up up
Virtual-Access2 unassigned YES unset up down
What mean NO state in NVI0 interface?
Thanks
08-28-2010 01:12 PM
emilio1973 wrote:
I tested with a free router and a technician from my ISP and sync properly.
The cisco syncs also. The question is if the free router passes traffic and you can use the internet with it.
emilio1973 wrote:
I placed the router that was used in the old headquarters still does not turn the light PPP
Because the problem is with ISP, not router.
08-29-2010 12:16 AM
Thank you very much Paolo. I'll keep trying
09-02-2010 05:33 AM
Hi again,
add the output of debug atm errors:
CPE3#debug atm errors
ATM errors debugging is on
CPE3#
*Mar 11 05:33:45.631: ATM0 DSL: Defect: LOM
*Mar 11 05:33:45.631: DSL: Defect: LOF: retraining
CPE3#
*Mar 11 05:33:49.415: DBS is not configured on ATM0.1 vc 8/35
What is DBS?
The output of debug atm events:
CPE3#deb
*Mar 11 05:48:46.567: %SYS-5-CONFIG_I: Configured from console by ibx777 on console
CPE3#debug atm events
ATM events debugging is on
CPE3#
*Mar 11 05:48:52.195: ATM0: vcd = 1, safe_start called from periodic
*Mar 11 05:48:53.191: ATM0: vcd = 1, safe_start called from periodic
CPE3#
*Mar 11 05:48:53.663: atmsar_vc_tx_start(82E550BC).
*Mar 11 05:48:53.663: ATM0:atmsar_dequeue_pak, dequeued a pak = 0x82B248FC
*Mar 11 05:48:53.663: atmsar_transmit_pak_wrapper: deq(82B248FC). vcd: 1.atmsar_transmit_pak_wrapper : encap = Data
*Mar 11 05:48:54.191: ATM0: vcd = 1, safe_start called from periodic
CPE3#
*Mar 11 05:48:55.191: ATM0: vcd = 1, safe_start called from periodic
*Mar 11 05:48:56.191: ATM0: vcd = 1, safe_start called from periodic
CPE3#
*Mar 11 05:48:57.091: ATM0: atmsar_atm_get_stats,vcinfo = 0x0
*Mar 11 05:48:57.191: ATM0: vcd = 1, safe_start called from periodic
CPE3#
*Mar 11 05:48:58.191: ATM0: vcd = 1, safe_start called from periodic
*Mar 11 05:48:59.191: ATM0: vcd = 1, safe_start called from periodic
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