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ASR1002-X - L2TP Tunnels up but no Ping !

manu782623
Level 1
Level 1

Hello,

we are testing an ASR1002-X which acts as LNS for L2TP tunnels.

- All tunnels are UP (sh vpdn all return list of tunnels)

- VirtualAccess interfaces are UP

- C routes are added in routing table

but ping remote IPs  don't work !!!

Here technical information. Thanks a lot for help !

Regards,

Manuel

LNS1# sh ver

Cisco IOS Software, IOS-XE Software (X86_64_LINUX_IOSD-UNIVERSAL-M), Version 15.3(2)S1, RELEASE SOFTWARE (fc1)

Technical Support: http://www.cisco.com/techsupport

Copyright (c) 1986-2013 by Cisco Systems, Inc.

Compiled Mon 27-May-13 13:56 by mcpre

IOS XE Version: 03.09.01.S

..

ROM: IOS-XE ROMMON

LNS uptime is 1 day, 11 hours, 57 minutes

Uptime for this control processor is 1 day, 11 hours, 59 minutes

System returned to ROM by reload

System image file is "bootflash:asr1002x-universal.03.09.01.S.153-2.S1.SPA.bin"

Last reload reason: Reload Command

License Level: ipbase

License Type: Permanent

Next reload license Level: ipbase

cisco ASR1002-X (2RU-X) processor with 1151339K/6147K bytes of memory.

Processor board ID SSI16450ENF

6 Gigabit Ethernet interfaces

32768K bytes of non-volatile configuration memory.

4194304K bytes of physical memory.

6684671K bytes of eUSB flash at bootflash:.

LNS1#  show caller user login@domain.tdr

  User: login@domain.tdr, line Vi2.13, service PPPoVPDN

        Connected for 00:04:43

  Timeouts:    Limit     Remaining Timer Type

               1d06h     1d05h     Session

  PPP: LCP Open, CHAP (<-), IPCP

  IP: Local W.X.Y.254, remote W.X.Y.17

  Counts: 69 packets input, 960 bytes

          73 packets output, 1026 bytes

LNS1# show interfaces virtual-access 2.13

Virtual-Access2.13 is up, line protocol is up

  Hardware is Virtual Access interface

  Interface is unnumbered. Using address of Loopback0 (W.X.Y.254)

  MTU 1460 bytes, BW 1000000 Kbit/sec, DLY 100000 usec,

     reliability 255/255, txload 1/255, rxload 1/255

  Encapsulation PPP, LCP Open

  Open: IPCP

  PPPoVPDN vaccess, cloned from Virtual-Template1

  Vaccess status 0x0

  Protocol l2tp, tunnel id 16822, session id 65182

  Keepalive set (10 sec)

     71 packets input, 988 bytes

     75 packets output, 1054 bytes

  Time to interface disconnect:  absolute 1d05h

  Last clearing of "show interface" counters never

LNS1# show interfaces virtual-access 2.13 configuration

Virtual-Access2.13 is an VPDN link (sub)interface

Derived configuration : 378 bytes

!

interface Virtual-Access2.13

mtu 1460

ip unnumbered Loopback0

ip nat inside

ip tcp adjust-mss 1420

ip policy route-map INTERNET_VT1

timeout absolute 1800 0

no peer default ip address

ppp authentication chap pap DSL-AAA

ppp authorization DSL-AAA

ppp accounting DSL-AAA

ppp ipcp address required

ppp ipcp address accept

ip virtual-reassembly

end

LNS1#sh ip route

...

C        W.X.Y.20/32 is directly connected, Virtual-Access2.13

C        W.X.Y.21/32 is directly connected, Virtual-Access2.15

C        W.X.Y.22/32 is directly connected, Virtual-Access2.34

C        W.X.Y.23/32 is directly connected, Virtual-Access2.23

C        W.X.Y.24/32 is directly connected, Virtual-Access2.46

C        W.X.Y.28/32 is directly connected, Virtual-Access2.50

C        W.X.Y.30/32 is directly connected, Virtual-Access2.67

C        W.X.Y.31/32 is directly connected, Virtual-Access2.39

...

LNS1#show vpdn tunnel all

L2TP Tunnel Information Total tunnels 5 sessions 81

Tunnel id 16822 is up, remote id is 13259, 47 active sessions

  Remotely initiated tunnel

  Tunnel state is established, time since change 01:11:58

  Tunnel transport is UDP (17)

  Remote tunnel name is lac-01

    Internet Address A.B.C.D, port 1701

  Local tunnel name is LNS1

    Internet Address W.X.Y.254, port 1701

  L2TP class for tunnel is LNS

  Counters, taking last clear into account:

    39629 packets sent, 39398 received

    561488 bytes sent, 557740 received

  Last clearing of counters never

  Counters, ignoring last clear:

     39629 packets sent, 39398 received

    561488 bytes sent, 557740 received

  Control Ns 119, Nr 103

  Local RWS 1024 (default), Remote RWS 64

  Control channel Congestion Control is disabled

  Tunnel PMTU checking disabled

  Retransmission time 1, max 1 seconds

  Unsent queuesize 0, max 0

  Resend queuesize 0, max 4

  Total resends 0, ZLB ACKs sent 52

  Total out-of-order dropped pkts 0

  Total out-of-order reorder pkts 0

  Total peer authentication failures 0

  Current no session pak queue check 0 of 5

  Retransmit time distribution: 0 0 0 0 0 0 0 0 0

  Control message authentication is disabled

  VPDN group for tunnel is LNS

1 Reply 1

manu782623
Level 1
Level 1

Hello,

any idea ? Thanks..

Regards,

Manuel

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