traffic across ATM over mPLS

jarvar832004 · ‎01-09-2008

I have a setup like this CE1->PE1->P1->P2->PE2->CE2. The CE and PE have ATM cards on them and the P routers are interconnected on POS with MPLS enabled on all of them. I am trying to run AToM on the PE. I see that the end to end PVC comes up and icmp works fine, but doesnt seem to pass any traffic.

A PVC if terminated on the PE1 locally from CE1 seems to work but not across the MPLS PE and P.

What could be the problem ?

mheusing · ‎01-09-2008

Hi,

Could you please post the relevant CE and PE configs?

Regards, Martin

jarvar832004 · ‎01-09-2008

interface ATM2/0

no ip address

no atm ilmi-keepalive

end

CPE3700-A#sh run int atm2/0.3

Building configuration...

Current configuration : 137 bytes

!

interface ATM2/0.3 point-to-point

ip address 97.97.97.2 255.255.255.0

pvc 3/300

oam-pvc manage

encapsulation aal5mux ip

!

end

This is present in the CE routers and the PE as follows

interface ATM4/0

description To 3700

mtu 1500

no ip address

no atm ilmi-keepalive

no atm enable-ilmi-trap

bundle-enable

service-policy input atm-in

service-policy output atm-out

!

pvc 3/300 l2transport

oam-ac emulation-enable

oam-pvc manage

encapsulation aal5mux

xconnect 4.4.4.4 333 encapsulation mpls

!

end

The PE1 is 7200 and PE2 is 7600. Both have the same configuration on the interface

mheusing · ‎01-09-2008

Hi,

Is there a specific reason not to use "encapsulation aal5snap"? In your setup only IP is allowed. Which traffic is affected? How does your routing across the PVC look like?

Regards, Martin

jarvar832004 · ‎01-09-2008

Hi Martin

There is no specific reason for not using the aal5snap,infact i have tried this too, but the problem remains be it aal5snap or aal5mux ip.

The affected traffic is any tcp traffic, or only the icmp is working.

I dont see any problems in routing as i can see the icmp working fine.