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L2TPv3 tunnel not formed

nimmi.phasil
Level 1
Level 1

Hi ,

Im creating L2TPv3 tunnels between ASR 1001X and 1841,2811,3725.

Tunnels between ASR1001X and 1841 , ASR 1001X and 2811 area formed. But it is not established between ASR1001X and 3725.

ASR 1001X logs

LAB-ASR1001X-R4# sh xconnect all

UP pri ac Gi0/0/4.4:4(Eth VLAN) UP l2tp 10.10.10.3:3 UP
UP pri ac Gi0/0/4.5:5(Eth VLAN) UP l2tp 10.10.10.2:2 UP
DN pri ac Gi0/0/4.60:6(Eth VLAN) DN l2tp 10.10.10.4:6 DN
LAB-ASR1001X-R4#

*Jun 8 01:15:24.908: Xconnect L2TPv3[10.10.10.4, 6]: TUN open in <80 secs
*Jun 8 01:16:35.972: Xconnect L2TPv3[10.10.10.4, 6]: FSM RstrtDmp in LsbR, Noop
*Jun 8 01:16:35.972: Xconnect L2TPv3[10.10.10.4, 6]: TUN open 10.10.10.10->10.10.10.4
*Jun 8 01:18:18.863: Xconnect L2TPv3[10.10.10.4, 6]: TUN FAILED 10.10.10.4
*Jun 8 01:18:18.863: Xconnect L2TPv3[10.10.10.4, 6]: SOC 8F00000E/- disc-from-app: Tunnel failed to 10.10.10.4, consecutive fail count 44
*Jun 8 01:18:18.863: Xconnect L2TPv3[10.10.10.4, 6]: FSM TunClose in LsbR, TunCl
*Jun 8 01:18:18.863: Xconnect L2TPv3[10.10.10.4, 6]: FSM TunOpenD in LsbR, TuOpD
*Jun 8 01:18:18.863: Xconnect L2TPv3[10.10.10.4, 6]: TUN open in <80 secs
*Jun 8 01:19:37.886: Xconnect L2TPv3[10.10.10.4, 6]: FSM RstrtDmp in LsbR, Noop
*Jun 8 01:19:37.886: Xconnect L2TPv3[10.10.10.4, 6]: TUN open 10.10.10.10->10.10.10.4
*Jun 8 01:19:44.886: Xconnect L2TPv3[10.10.10.4, 6]: TUN FAILED 10.10.10.4
*Jun 8 01:19:44.886: Xconnect L2TPv3[10.10.10.4, 6]: SOC 8F00000E/- disc-from-app: Tunnel failed to 10.10.10.4, consecutive fail count 45
*Jun 8 01:19:44.886: Xconnect L2TPv3[10.10.10.4, 6]: FSM TunClose in LsbR, TunCl
*Jun 8 01:19:44.886: Xconnect L2TPv3[10.10.10.4, 6]: FSM TunOpenD in LsbR, TuOpD
*Jun 8 01:19:44.886: Xconnect L2TPv3[10.10.10.4, 6]: TUN open in <80 secs
*Jun 8 01:21:03.754: Xconnect L2TPv3[10.10.10.4, 6]: FSM RstrtDmp in LsbR, Noop
*Jun 8 01:21:03.754: Xconnect L2TPv3[10.10.10.4, 6]: TUN open 10.10.10.10->10.10.10.4
*Jun 8 01:22:51.654: Xconnect L2TPv3[10.10.10.4, 6]: TUN FAILED 10.10.10.4
*Jun 8 01:22:51.654: Xconnect L2TPv3[10.10.10.4, 6]: SOC 8F00000E/- disc-from-app: Tunnel failed to 10.10.10.4, consecutive fail count 46
*Jun 8 01:22:51.654: Xconnect L2TPv3[10.10.10.4, 6]: FSM TunClose in LsbR, TunCl
*Jun 8 01:22:51.654: Xconnect L2TPv3[10.10.10.4, 6]: FSM TunOpenD in LsbR, TuOpD
*Jun 8 01:22:51.654: Xconnect L2TPv3[10.10.10.4, 6]: TUN open in <80 secs
*Jun 8 01:24:05.687: Xconnect L2TPv3[10.10.10.4, 6]: FSM RstrtDmp in LsbR, Noop
*Jun 8 01:24:05.687: Xconnect L2TPv3[10.10.10.4, 6]: TUN open 10.10.10.10->10.10.10.4

Router3725 logs:

IDRBT_DC_R1_3725#sh xconnect all

DN ac Fa0/0.60 6(Eth VLAN) UP l2tp 10.10.10.10:6 DN


Logs

*Oct 10 10:42:00.271: XC L2TP: uid:16[10.10.10.10/6] Event <Connect Timer Expired>, state Waiting for timer to connect - > Connecting
*Oct 10 10:42:00.271: XC L2TP: uid:16[10.10.10.10/6] L2TUN socket session connect requested
*Oct 10 10:42:30.279: XC L2TP: Received L2TUN socket message <CDN - Session Disconnected>
*Oct 10 10:42:30.279: XC L2TP: uid:16[10.10.10.10/6] Event <CDN - L2TUN Socket Session Disconnected>, state Connecting - > Connecting
*Oct 10 10:42:30.279: XC L2TP: uid:16[10.10.10.10/6] Event <Start Connect Timer>, state Connecting -> Waiting for timer to connect
*Oct 10 10:42:30.279: XC L2TP: uid:16[10.10.10.10/6] with 50% jitter
*Oct 10 10:42:36.687: %CDP-4-DUPLEX_MISMATCH: duplex mismatch discovered on FastEthernet0/0 (not half duplex), with LAB- 3850-R4 GigabitEthernet1/0/33 (half duplex).
*Oct 10 10:43:03.015: XC L2TP: uid:16[10.10.10.10/6] Event <Connect Timer Expired>, state Waiting for timer to connect - > Connecting
*Oct 10 10:43:03.015: XC L2TP: uid:16[10.10.10.10/6] L2TUN socket session connect requested

Thanks

Nimmi

2 Replies 2

Philip D'Ath
VIP Alumni
VIP Alumni

If you are sure the 3725 has a similar config to the working 1841 then I would try upgrading the 3725 IOS to a gold star software version.  You may just be facing an IOS bug.

Yes, the  config is similar. Version is Version 12.4(15)T4,

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