QoS for backup traffic broke after VoIP type change
Hi all! I had some QoS setup to classify my backup traffic as lowest DSCP priorirty so when my WAN links saturate in the middle of the night it doesn't break everything at the remote location...however after upgrading our VOIP system it required me to setup all our server and switch uplink ports to use the "mls qos trust dscp" setting, where before they used mls qos vlan-based...I can't figure out what the deal is. I assume the vlan-based QoS is what was making the backup traffic work, but I dont know how to adjust it to work the new setting.
I use the Auto QoS for VoIP traffic, and then setup a policy for all traffic going to the backup server to be classified as lowest priority. Here is what it looks like...not sure if all of this is relevant or not. I have 3 switches, 1 3750 and 2 3560s. Here are the settings for the 3750, which is the core of the data center and contains the WAN link back to our HQ where the backup server lives.
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