Diffserv QoS setup for Cisco?

[Shawn Jones]

Hello all-

Been working with our network infrastructure folks on setting up the network with Diffserv QoS. We have recently deployed IP telephony at one of our buildings, and they are using Diffserv as their QoS method of choice.

Could any of you provide some of the examples of your configurations so that I can give our network team some idea of how they should proceed? We currently are doing all calls via ISDN, with very little traffic over IP, except management, and the occasional "Oh Crap, the ISDN is down" calls.

We have a 100Mbps link between our offices in NY and the midwest.

Thanks

[montgomeryed]

HI, You probably don't need QoS on 100mbit/s links:

But here are the main components we use on a cisco router for a frame to atm network, any switch between the router and vc unit could drop the diffserv marker but most don't that i know of:

class-map match-any video-traffic
match ip dscp af41

policy-map wan-shaper-video
class video-traffic
priority 384
class class-default
policy-map video-qos
class class-default
shape average 1300000
service-policy wan-shaper-video

interface Serial0/0/0.700 point-to-point
description Link to NHQ_ATM2/0.1142
bandwidth 1536
ip address 172.x.x.x 255.x.x.x
frame-relay interface-dlci 700 IETF
class map-class-video

!
map-class frame-relay map-class-video
service-policy output video-qos

[Shawn Jones]

We will have more than just video going across this link.

Thanks

HI, You probably don't need QoS on 100mbit/s links:

But here are the main components we use on a cisco router for a frame to atm network, any switch between the router and vc unit could drop the diffserv marker but most don't that i know of:

class-map match-any video-traffic
match ip dscp af41

policy-map wan-shaper-video
class video-traffic
priority 384
class class-default
policy-map video-qos
class class-default
shape average 1300000
service-policy wan-shaper-video

interface Serial0/0/0.700 point-to-point
description Link to NHQ_ATM2/0.1142
bandwidth 1536
ip address 172.x.x.x 255.x.x.x
frame-relay interface-dlci 700 IETF
class map-class-video

!
map-class frame-relay map-class-video
service-policy output video-qos