HI, I am in very great dilemma.I have 1 Gbps link from my service provider.I am running BGP to establish the connectivity with service provider PE. Just to brief you , I have redundant links on 2 -Cisco 3750 ( Primary link & secondary )connecting to service provider side and there are 4 routers for 2 services ( Primary and secondary each for 2 services)now the utilization on applications of  services -1 has increases and  reaches 900~950 Mbps,not to impact services-2 ,I 've  driven the traffic of services-2 through secondary link.I have attached ppt for some undestanding Till few weeks back the utilization was around 750 Mbps in input direction and 700 Mbps in output direction of WAN  port on service 1 routers but now the input utilization has started reaching 900~950 Mbps in input direction. I have 7600-SIP 400 ( sub slot- 5XGE-SPA) on routers [For Qos services ] with are connected to switches.I have discussion with service provider and they said that They would provide be one more think and so that I thought of doing first 2- ports aggregation between Service provider device & 3750 switch and another 2-port aggregation between 3750 switch & services -1 (Cisco7606) router. There is no issue to create ports aggregation betn Service provider device & 3750 switch.It's not happening between 3750 switch & services -1 (Cisco7606) router because as per Cisco document port aggregation  is not supported on 7600-SIP 400. It takes time for service provider to provide 10 gig port .I have WS-X6548-GE-TX module on services -1 (Cisco7606) router.So I thought connecting router WS-X6548-GE-TX ports of router with switch and  create port channel between Them.But I am wondering how would QOS feature can be used. So  I need an advice whether WS-X6548-GE-TX ports support QOS with Etherchannel. Your  advice will be appreciated R's Bibek ... View more