I also tried creating a trunk port and changing the Reth interfaces to L3 for ISP A and B trust side. I then have a seperate VLAN for each ISP with the ISP reth interfaces in it. But that still doesn't allow traffic from ISP B to route IP traffic that is in ISP A subnet.
I did consider adding 2 more interfaces to the ISP A reth into the VLAN for ISP B so that ISP B can see ISP A and B traffic. Then I would have those interface shut and un shut based on and RPM if BGP has redistributed rroutes to ISP B.
So not sure the best way to attack this design.
root issue:
All traffic is working to ISP A and all traffic is working to ISP B, but the ISP A and B links cannot be in the same layer 2 or VLAN. So how do I get traffic from ISP B to route through the ISP A routing engine when routes are redistibuted from A to B?
Thanks