Hey guys, thanks for the responses, but I'm not sure that answer the core question. I'm not looking for the MX to do QoS necessarily, but for it to trust and pass DSCP markings. I know the MX can remark and preserve markings, I have seen this in the pcap on the receiving end of the tunnel. The problem is this is something being written on the MX based on protocols/signatures, destinations, subnets, etc. What I would really like to know is, can the MX maintain markings it receives on the LAN and preserve them through the tunnel? My Cisco video endpoints apply DSCP 24 and 34 markings, and Cisco phones apply EF (DSCP 46), but I'm not seeing this on the far end of the tunnel. If I create the rule for SIP traffic to receive DSCP 34 this is received on the far end of the tunnel, but thats a signature/protocol based rule, and its applying DSCP 34 rather than preserving the existing markings the devices apply.
... View more