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@cesga.es
http://www.cesga.es/
---------------------------------------------------------------
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@cesga.es
http://www.cesga.es/
---------------------------------------------------------------