I am running Cisco QoS baseline on our WAN routers. I would like to know if there is a way to classify and prioritize traffic from\to two particular nodes that need to run some sort of data shadowing across the WAN. I have captured traffic from these nodes and it looks like they are putting traffic on the wire as DSCP=CS1. When traffic is light on the WAN links I don't think there is a problem, however, once bandwidth starts to getting to about 50% utilization the shadowing process between these two nodes starts to crawl ( The WAN connection is 12 Mbps between these two sites) Any help would be greatly appreciated... below is the QoS configuration sample from one of our routers
This is a rough guess and syntax may not be right. The above matches only for hosts in those subnets running on 80. You can do a whole range, all per port, etc. Pretty much whatever you can put in an acl can be matched on.
Thanks for the quick response!!! Now, there is an existing policy map applied to WAN interface (service-policy output mpls-qos) can I apply two policy maps to the same interface? or just add the new class to the existing policy map? Thanks again.
You'd add the class map to the existing policy map. You can also create a new policy map and then embed that policy map to the existing policy map, but you're limited to only one service policy on an interface per direction.
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