On Jul 9, 2019, at 9:19 AM, Mark Tinka <mark.tinka@seacom.mu> wrote:
On 9/Jul/19 16:18, Ross Tajvar wrote: I think the difficulty lies in appropriately marking the traffic. Like Joe said, the IPs are always changing.
Does anyone know if they are reasonably static in an Express Route scenario?
Mark.
Yes, the IPs used on the ExpressRoute connection are whatever is chosen for the internal IP scheme of the VPC. ExpressRoute is a VPN connection into that internal side of a VPC. On our carrier (MegaPort), ExpressRoute looks similar to an Option A NNI connection. BGP is used for routing. The source IPs on packets crossing out of the VPC onto the Azure-provided Internet may or may not be static, but internally they are usually static RFC 1918 addresses. We’ve been using ExpressRoute for our own office systems and a small handful of customers for about two years now. However, we don’t use diffserv on ExpressRoute, so can’t comment on that. -Brian