I am getting multiple routes to our on-prem network in virtual wan hub

ADM Cloud Gordon Leister 0 Reputation points
2024-10-02T00:21:19.17+00:00

We have a virtual wan hub with several spokes. We connect to our on-prem network via Expressroute circuits. We have noticed a problem that there are 3 routes a single network on the onprem, one over the expressroute circuit and 2 via next hops which are inside of the Virtual wan hub Vnet but we dont know what those IPs are. We can't remove these routes, as a result, we can't reach on-prem. How do we remove routes that are next hops of IPs we don't know ? somehow routes got injected into the route table and we can't figure out how to clear them.

Azure Virtual WAN
Azure Virtual WAN
An Azure virtual networking service that provides optimized and automated branch-to-branch connectivity.
224 questions
Azure ExpressRoute
Azure ExpressRoute
An Azure service that provides private connections between Azure datacenters and infrastructure, either on premises or in a colocation environment.
381 questions

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  1. ChaitanyaNaykodi-MSFT 26,216 Reputation points Microsoft Employee
    2024-10-02T22:01:14.3566667+00:00

    @ADM Cloud Gordon Leister Thank you for reaching out.

    Looks like the screenshot did not make it through, can you try uploading it again? A network diagram will also help in understanding the traffic flow and route association.

    Meanwhile based on your question above,

    In Express route gateway configuration can you check if you have configured the Allow traffic from remote Virtual WAN network this can cause problems if the same Express Route Circuit is connected to multiple Express Route Gateways if that's the case.

    Thanks

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