Hi,
I am trying to make EoMPLS (VLAN mode) to work between a 7206VXR
(NPE400) running c7200-jk9s-mz.123-21.bin and a 3845 running
c3845-advipservicesk9-mz.124-15.T.bin. These two PE routers are
connected back-to-back via FastEthernet. The customers are connected
via a switch connected to each PE:
CE1 --- Switch --- PE1 --- PE2 --- Switch --- CE2
The control place comes up without any issue:
C7200-PE1#sh mpls l2transport vc de
Local interface: Fa0/0.3 up, line protocol up, Eth VLAN 3 up
Destination address: XXXXX (loopback ip of PE2), VC ID: 100, VC status: up
Next hop: XXXXXX (ip of PE2's interface connected with PE1)
Output interface: Fa3/0, imposed label stack {234}
Create time: 04:55:52, last status change time: 04:22:07
Signaling protocol: LDP, peer XXXXX (loopback ip of PE2):0 up
MPLS VC labels: local 2207, remote 234
Group ID: local 0, remote 0
MTU: local 1500, remote 1500
Remote interface description: MPLS TEST
Sequencing: receive disabled, send disabled
VC statistics:
packet totals: receive 658, send 558
byte totals: receive 61117, send 57759
packet drops: receive 0, send 0
C3845-PE2#sh mpls l2transport vc de
Local interface: Gi4/0.3 up, line protocol up, Eth VLAN 3 up
Destination address: XXXXX (loopback ip of PE1), VC ID: 100, VC status: up
Next hop: XXXXXX (ip of PE1's interface connected with PE2)
Output interface: Gi0/0, imposed label stack {2207}
Create time: 05:06:06, last status change time: 04:42:00
Signaling protocol: LDP, peer XXXXX (loopback ip of PE1):0 up
MPLS VC labels: local 234, remote 2207
Group ID: local 0, remote 0
MTU: local 1500, remote 1500
Remote interface description: MPLS test
Sequencing: receive disabled, send disabled
VC statistics:
packet totals: receive 807, send 697
byte totals: receive 81235, send 63925
packet drops: receive 0, seq error 0, send 0
But the data plane is having severe issue. I cannot ping end-to-end
from the CEs. It seems that when I ping CE1 from CE2 (i.e. from the CE
connected to 3845), ARP works and I am able to send a ping packet to
CE1. But CE1 never receives it. On the other side, CE2 does not get
replies to its own ARP requests. Once I statically bind the mac
address of CE2 on CE1, CE1 sends an ICMP packet to CE2 and CE2 replies
to it but CE1 never receives the reply. It seem that the communication
is one way, from CE1 (one behind C7206) to CE2 (one behind C3845) and
not the other way round. I replaced C3845 with C7206 and there was not
issue in the data plane.
My question is with the IOS I used for C3845, is EoMPLS not supported
on it? As per Cisco's documentation, EoMPLS is supported on the IOS I
used for C3845. Any one any experience in running EoMPLS on C3845?
Another thing I noted was in the following output from C3845, it shows
MRU=0 and also there was no outgoing interface attached:
C3845-PE2#sh mpls forwarding-table labels 234 detail
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
234 l2ckt(100) 50732 none point2point
MAC/Encaps=0/0, MRU=0, Tag Stack{}
No output feature configured
While on C7206, the output was as it should be:
C7200-PE1#sh mpls forwarding-table labels 2207 detail
Local Outgoing Prefix Bytes tag Outgoing Next Hop
tag tag or VC or Tunnel Id switched interface
2207 Untagged l2ckt(100) 55853 Fa0/0.3 point2point
MAC/Encaps=0/0, MRU=1500, Tag Stack{}
No output feature configured
Any explanations/solutions?
Regards,
Junaid
