Active-Active between one router and 2 core switches

[cyrilantony.b]

I currently have one core router connected to one core switch with few vlans configured. Now we need to upgrade core switches and will have HP5406 shortly. I need to run two cables from router to each core switch respectively and achieve active-active configuration.

My ISP is running bgp and i need to run vrrp on both the core switches. Please suggest possible way to obtain the active-active configuration done.

[mfurnival]

You can use VRRP priorities so that either Core 1 or Core 2 is the VRRP active router per VLAN.

For example Core 1 would be VRRP active for VLANs 3, 5, 7 and 9 and Core 2 would be VRRP active for VLANs 2,4,6 and 8. That way both uplinks to the WAN router would be used though the load balancing would not be completely evenly distributed.