[j-nsp] Problem with Juniper M10 and Catalyst5500 PVC link.

[Jose Carlos Perez Gomez]

Hello,
we are changing all the main links of our network form a Cisco 7206
router to a M10. And we found a strange thing.

Our colleagues of the university are conected using a atm Lane, linking
their Catalyst 5500 and our Cisco router. 
We configure a PVC between the Catalyst and our M10...
---------------------------------------------------
In the M10

        unit 5 {
            description RECETGA-PONTEVEDRA;
            encapsulation ether-over-atm-llc;
            vci 204.204;
            family inet {
                address 10.204.204.1/24;
            }
        }

In a intermediate LS1010 we change the pvc from 204,204 to 0,1001 

Then, in the Catalyst 5500

interface ATM0
 atm preferred phy A
 atm pvc 1 0 5 qsaal
 atm pvc 2 0 16 ilmi
 atm pvc 1001 0 1001 aal5snap
 atm bind pvc vlan 1001 204

routing card
interface Vlan204
 ip address 10.204.204.2 255.255.255.0

---------------------------------------------------

If we test the conectivity using ping, it goes OK. Even whith big size
packets... But when we start to route all the traffic trough this
link... 20-40% of packest lost. The traffic is only 10% or less of the
avaliable bandwidth.

Does anybody has a similar problem? Or the same situation without
problems?

Any idea?

Thanks.

---------------------------------------------------------------
Jose Carlos Perez Gomez
Network Manager
Centro de Supercomputacion de Galicia
Avda. de Vigo. s/n (Campus Sur)
15706 Santiago de Compostela
Tel 981 569810 ; Fax 981 594616
email: jcarlos at cesga.es
http://www.cesga.es/
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