TCP window size adjustment over Core router

Hello guys,

One of our routers working between international backbones. I was executing preliminary testings i had two problems one is RX drops from on board intel card 82541GI Gigabit Ethernet Controller (rev: 5) other is low through put caused by TCP window size is there anyway to set window size in routeros? Other engineers told me to it is necessary to avaiod Long Fat Networks. I already configured BGP4 & 6 in the router works fine.

Regards.

TCP window matters only for endpoints, middlepoints are only involved it creating latency between endpoints.

Or are you testing to or from CCR itself?

Yes, end to end Bandwith test gives very good idea about internal connection speed and problems i use iperf between client to client and mikrotik BWtest for router to router.I am currently using a server platform and planning to use CCR in all Tier 3 connections.