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motokimatsuwaka-8443 avatar image
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motokimatsuwaka-8443 asked TravisCragg-MSFT answered

Express route support to active / standby

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
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TravisCragg-MSFT avatar image
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TravisCragg-MSFT answered

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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