OSPF BFD echo mode on ISR

Unanswered Question

Does anybody know whether it is possible to configure OSPF BFD echo mode on just one side?

The device which I am testing is c1841(IOS:12.4(15)T3) and c3845(IOS:12.4(15)T3).

When I see the document of "Echo Mode Without Asymmetry", it says

"Echo mode is described as without asymmetry when it is running on both sides (both BFD neighbors are running echo mode). ".

Configuring BFD Echo Mode


Does this mean both BFD peers need to be configured as BFD echo mode and can't configure on just one side?

I tried to configure echo mode on just one side using "no bfd echo" but this makes other BFD peer not to use BFD echo.

Any information is appreciated.

Thank you,


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