Hi, I am using DMVPN/IPSEC/VRFs. On the egress of the DMVPN/VRF tunnel interfaces, I have applied a Service Policy to remark traffic. Hence the remarking occurs on the inner packet header.
Assuming qos-preclassify is NOT enabled. Does anyone know how 12.4T IOS code should operate (options)
1. Copy the "remarked" TOS value to the outer headers as part of the TOS preservation feature
2. Copy the original (pre remarking) TOS value of the inner packet header as part of the TOS preservation feature
3. Egress inner packet header remarking disables TOS preservation feature.
4. Other ?
Problem Space : At remote sites, I can easily perform the QOS remarking on the router LAN ingress interface, rather than on the egress DMVPN tunnel interface. However at the head end, the DMVPN/IPSEC/VRF routers also happen to be MPLS PE devices. Hence remarking on Layer3/4 (IP/Ports) criteria on the ingress interface is not possible as we are dealing with MPLS labels. Hence why I am attempting to do this on the egress on the DMVPN tunnel/VRF interface.