[nsp] AToM

Antoine Versini vox at t-online.fr
Mon Dec 22 12:42:22 EST 2003


Hi NSP !

I'm trying to achieve layer 2 ethernet transport between two 7600 w/
SUP720 running 12.2(17a)SX1. I've been carefully studying
http://www.cisco.com/univercd/cc/td/doc/product/software/ios121/121newft/121limit/121ex/121ex8a/eompls9.htm
and then reproduced the configuration. The VC goes UP, but doesn't carry
any traffic :

c6k03-v#sh mpls l2transport vc 69 detail
Local interface: Vl42 up, line protocol up, Eth VLAN 42 up
  Destination address: 194.117.192.203, VC ID: 69, VC status: up
    Tunnel label: 17, next hop 62.34.0.26
    Output interface: Vl210, imposed label stack {17 16}
  Create time: 02:11:26, last status change time: 00:00:42
  Signaling protocol: LDP, peer 194.117.192.203:0 up
    MPLS VC labels: local 16, remote 16
    Group ID: local 39, remote 39
    MTU: local 1500, remote 1500
    Remote interface description: AToM c6k04-v
  Sequencing: receive disabled, send disabled
  VC statistics:
    packet totals: receive 0, send 0
    byte totals:   receive 0, send 0
    packet drops:  receive 0, send 0

Here is the basic config i've done on the two edge routers (the configs
are symetrical, except the destination IP addresses, of course) :

no spanning-tree vlan 42
!
vlan 42
 name AToM
!
interface GigabitEthernet5/2
 no ip address
 logging event link-status
 media-type rj45
 speed 100
 duplex full
 switchport
 switchport access vlan 42
 switchport mode access
!
interface Vlan42
 description AToM c6k03-v
 no ip address
 mpls l2transport route 194.117.192.203 69
!

An end-station is attached to the Gi5/2 interface and there is another one
connected the same way on the other end. They share the same IP subnet,
but can't ping each other. Please also note that there is a P router
between the two edge 7600's and IP labels are switched fine (thus I assume
this is not a problem on the MPLS core itself).

If you think there is a mistake in this configuration, feel free to point
it to me :)

Thanks,
AV.

-- 
Antoine Versini
IP Networks Project Manager / T-Online France - Club-Internet


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