Extreme Fabric vist Layer 3 redundancy

[Ahmed_101]

Hi all, 
I have a deployment where i have 2 VSP core switches running in vist cluster. 
The edge switches is connected using two links, one is connected to the first switch and the other link is connected to the second switch which is smlt config.
These switches is connected to the isp router using one vlan and ip so all the traffic is routed to this ip.
Core A have vlans and ip addresses of these vlans, core b have the same vlans but with out ip addresses. so i have this problem where the layer 3 is on just one of these voss  switches so there is no real layer 3 redundancy for the clients.
My goal is to configure vlans layer 3 interfaces in both switches to provide gateway redundancy for the clients so when one switch goes down the other one takes the routing task.
as i researches i found out that i can configure rsmlt or anycast gate way to achieve this. 
which one is better and easier to configure ? 
Thanks in advance.

[EF]

vrrp

[Ahmed_101]

Thanks.

[gfriedl]

you did not state, what is the routing protocol in between your core and the ISP router. usually one would use a static route, pointing to a virtual IP address on both VSPs. VRRP or IP Anycast GW are options and both are configured similar. Just remember, that for IP ACGW to work you would need at least release 9.1.

if you would use dynamic routing, than the need for Virtual IP goes away and protocol would take care of failover.

[Ahmed_101]

We do not use any routing protocol we use one static route to point all the traffic to that ip address.
so if i configured rsmlt or vrrp in both vsp will this still work ?