3845 and l2tpv3 pseudowire problem

May 12, 2008 8 Replies
D

Hello!



I have following configuration on cisco 3660 on one side :



l2tp-class sberbank



pseudowire-class eth-sberbank encapsulation l2tpv3 protocol l2tpv3 sberbank ip local interface Loopback0



interface Loopback0 ip address 192.168.200.249 255.255.255.252



interface FastEthernet0/0.4 description sberbank encapsulation dot1Q 4 no cdp enable xconnect 192.168.200.250 1 pw-class eth-sberbank


and mirror configuration on another side on 2801.



Now I want to migrate from 3660 to 3845.



l2tpv3 connection starts p100-cr3845-2#sh l2tun



%No active L2F tunnels



L2TP Tunnel and Session Information Total tunnels 1 sessions 1



LocID RemID Remote Name State Remote Address Port Sessions L2TP Class/ VPDN Group



37042 9051 xnet-cr2801-2 est 192.168.200.250 0 1 sberbank

LocID RemID TunID Username, Intf/ State Last Chg Uniq ID Vcid, Circuit



11288 43070 37042 1, Gi0/0.4:4 est 00:00:06
2


but traffic don't pass.



I can see only arp requests pass this tunnel with tcpdump on both sides. What can be wrong?


Vote
Twitter Facebook LinkedIn
M

  1. The configurations wrt to the tunnel on the 3660 and 3845 are identical ?
  2. what is the IOS version in use on 3660 ?

  1. what is the IOS version in use on 3845 ?

Vote
Twitter Facebook LinkedIn
D

Yes, shure

12.4.10

I tried 12.4.18 and 12.4.19

btw, 2801 on another side runs 12.4.17a

Vote
Twitter Facebook LinkedIn
D

Yes, it is enabled. Very strange thing is that arp requests pass (this mean that l2 connection exists), but other traffic not. May be something is wrong with switches? I don't phisically replaced 3660 with 3845, they both are connected now. But I tried to change connection from 2801 to 2811 on other side (they are both connected too) and there are no problems...

Vote
Twitter Facebook LinkedIn
D

I tested, switches works OK, mac address from far point moves to 3845 when I turn loopback 0 no shutdown and shutdown on 3660...

Vote
Twitter Facebook LinkedIn
M

Are ARP replies being received ie. is the tunnel passing both broadcast request and unicast response ?

Post

sh xconnect all detail

sh l2tun summary al

sh l2tun sess all

Vote
Twitter Facebook LinkedIn
D

Just because I see mac addresses in arp tables on both sides I'm shure that response pass.

There are no above commands . at least in 2.4.19...

%No active L2F tunnels

L2TP Session Information Total tunnels 1 sessions 1

Session id 46479 is up, tunnel id 11028 Call serial number is 4900004 Remote tunnel name is xnet-cr2801-2 Internet address is 192.168.200.250 Session is L2TP signalled Session state is established, time since change 00:08:36 964 Packets sent, 442 received 78038 Bytes sent, 30971 received Last clearing of "show vpdn" counters never Receive packets dropped: out-of-order: 0 total: 0 Send packets dropped: exceeded session MTU: 0 total: 0 Session vcid is 1 Session Layer 2 circuit, type is Ethernet Vlan, name is GigabitEthernet0/0.4:4 Circuit state is UP Remote session id is 43109, remote tunnel id 56034 DF bit off, ToS reflect disabled, ToS value 0, TTL value 255 No session cookie information available UDP checksums are disabled SSS switching enabled Sequencing is off Unique ID is 19

%No active PPTP tunnels

Vote
Twitter Facebook LinkedIn
D

well, I installed vtun on linux servers and shall try to forget about cisco's buggy l2tpv3 ;-)

Vote
Twitter Facebook LinkedIn

Join the Discussion

Have something to add? Share your thoughts — no account required.

Didn't find your answer?

Ask the community — no account required