Apologize for the dumb question, I come from the server world. Our network admin is on holiday and I'm filling in.
For the sake of simplicity, we have a fairly symmetric traffic pattern, what goes up goes down. The setup is VRRP so only one can be the master at a given point of time. Since both are advertising our space on ingress the traffic can come in any path. What seems to be happening is the ISP is naturally splitting our traffic between the links.
On egress though we are prone to saturating a link. Looking at the bandwidth graphs the VRRP master is sending all the egress traffic and the VRRP backup is sending none. This seems to make sense as Juniper, per their docs, prefers an eBGP route over iBGP.
As a test we moved the links on router B over to router A and traffic naturally split 'evenly' on egress as well.
Is there a way to have the iBGP routes have equal preference to the eBGP routes? We do get full table from our ISP on both the routers and each has a backup static router hard coded to the PE. The desired goal to mimic the behaivor when all circuits were plugged into RA. Some of the traffic would flow directly out carrier-A plugged into the router and some would get handed off to B? We would have to have some mechanism to prevent routing loops so RouterB doesn't try the same trick and hand it back to routerA.
Topology is as follows: https://imgur.com/Ve4dWkp