Bundle-Ether EFP Load Balancing

[y.koulouris]

Hello.

I would like to inquire the following regarding the configuration snippet below:

Bundle-Ether 100 consists of two physical links.

interface Bundle-Ether100

interface Bundle-Ether100.1 l2transport
encapsulation dot1q 50

interface Bundle-Ether100.2 l2transport
encapsulation dot1q 60

RP/0/RSP0/CPU0:router(config)#interface bundle-ether 100.1 l2transport
RP/0/RSP0/CPU0:router(config-subif)# bundle load-balancing hash 1

RP/0/RSP0/CPU0:router(config)# interface bundle-ether 100.2 l2transport
RP/0/RSP0/CPU0:router(config-subif)# bundle load-balancing hash 2

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My understanding is that if one physical link fails I should expect traffic outage for either 100.1 or 100.2, depending on which one of the two physical members fails.

Does anybody know for sure if my assumption is correct or mistaken?

Unfortunately, there is no opportunity to test the said assumption in a lab environment.

Thanks in advance.

Y.K.

[Aleksandar Vidakovic · Accepted solution]

if one member fails both EFPs will be routed over the same bundle member. The bundle hash comes into the picture only when there are multiple bundle members available.

[y.koulouris]

Thank you Aleksandar.

Y.K.