I have a FR link which is having 3 point-to-point sub-interfaces. Each sub-interface is mapped with different DLCI and each sub-interface belong to different VRF (VPN). Like sub-interface 1/0.1 -> DLCI 100 -> VRF_A ; sub-interface 1/0.2 -> DLCI 200 -> VRF_B; sub-interface 1/0.3 -> DLCI 300 -> VRF_C
There is 4th VRF i.e., LAN_VRF which is applied on LAN interface. All WAN VRFs (over FR link) are communicating with LAN VRF using VRF-Lite mechanism because this all is done in single router. There is only 1 IP (lets say 10.0.0.1) in LAN which has to feed different servers in each WAN VRFs lying at remote-site. So this LAN IP is advertised in all 3 WAN VRFs.
Total b/w I have on WAN is 512kb. I have to apply QOS and prioritze that 1 LAN IP over WAN and give 60% percent of strict total b/w of the WAN link.
I am confused that how to give priority that 1 LAN IP over main interface when there are 3 sub-interfaces belonging to different VRFs.
I know, I have to use FRTS with CBWFQ/LLQ in this case. But is it possible to use FRTS in conjunction with CBWFQ/LLQ over main interface and that will prioritize that LAN IP address for all 3 sub-interface in different DLCI and VRF?