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Express route support to active / standby

motoki matsuwaka 1 Reputation point
2020-05-14T08:11:09.327+00:00

Hi There

I understand that one Expressroute consist of two physical circuit.
Then, for case of private peering, two eBGP sessions are configured on this Expressroute, with one VLAN and / 30 two subnets assigned.

In this case, are there any BGP attributes that can be used to implement Active / Standby for traffic from vNet to on-premises ?

I know that it is usually controlled by ECMP.

Thanks

Azure ExpressRoute
Azure ExpressRoute
An Azure service that provides private connections between Azure datacenters and infrastructure, either on premises or in a colocation environment.
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  1. TravisCragg-MSFT 5,681 Reputation points Microsoft Employee
    2020-05-21T00:22:01.637+00:00

    This is discussed here in the High Availability with ExpressRoute Doc. Using Routes and BGP As Path prepending is the typical way to do this.

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