If you want to prevent a PE router from deciding which ingress packets to drop, the only plan is to send packets to spoke sites at or below the spoke line-rate. The only good way to do that is shaping on the hub router.
policy-map parent_shaper class class-default shape average 100000000 < --- 100Mbps parent shaper. service-policy site_shaper policy-map site_shaper class t1_site shape average 1536000 service-policy qos_global class multilink_site shape average 3072000 service-policy qos_global class class-default service-policy qos_global policy-map qos_global ... whatever you typically use here.... Tyler Haske On Wed, May 1, 2013 at 5:03 PM, Wes Tribble <westrib...@gmail.com> wrote: > I have a question for the QOS gurus out there. > > We are having some problems with packet loss for our > smaller MPLS locations. This packet loss is due to the large speed > differential on our Hub site(150mb/s) in comparison the the branch office > locations(single T-1 to 4.5mb/s multilinks). This packet loss only seems > to impact really bursty applications like our Web Proxy. I have been > around and around with WindStream to give me some extra buffer or enable > random early detection on the smaller interfaces in my MPLS network. So > far they are unwilling to do a custom policy and none of their standard > policies have enough buffer to handle the bursts. They do FIFO tail drop > in every queue, so I can’t even choose a policy that has WRED implemented. >