The latest 12.4 IOS for the 7206-VXR and 3845 routers supports
BFD (bidirectional forwarding detection) but only with OSPF.
We'd like to use BFD in our environment, but we're an EIGRP shop with
no intention of switching to OSPF.
Any Cisco engineers here who could find out if the 7206-VXR and 3845 series
routers will ever support BFD with EIGRP? Thanks for checking.
I went through configuration of BFD on both the 7206 and 3845 and the commands
took just fine. Then I enabled BFD debugging and pulled one of the links I had configured
BFD on and I could see the BFD debug messages OK - however nothing changed as regards
to the EIGRP rerouting. Then I went to Cisco's Feature Navigator here on CCO and
the truth became evident. BFD and EIGRP support is only available on CAT-3750-Metro
switches, the ASR-1000 platform, and the ME-3400.
For Cisco IOS Release 12.4(4)T, the Cisco implementation of BFD supports only the following routing protocols: BGP, EIGRP, IS-IS, and OSPF.
It was that document that I used to configure BFD on the routers. But when it didn't work I read a little more carefully and found
from the same document, but further down:
•BFD support is not available for all platforms and interfaces. To confirm BFD support for a specific platform or interface and obtain the most accurate platform and hardware restrictions, see the Cisco IOS software release notes for your software version.
For Cisco IOS Releases 12.0(31)S and 12.4(4)T, you may configure BFD support for one or more of the following routing protocols: BGP, IS-IS, and OSPF.
That's when I went to the Feature Navigator, searched on BFD-EIGRP, pulled down the Platform tab and was presented with the image I copied to the Word document attached to this note.
So I'm still convinced that BFD and EIGRP are not supported in any of the IOS routers except the ASR-1000.
So I'm still back to my original question of when/if it will be supported.
I still believe (of course I can be wrong) thast the feature is supposed to be supported - BFD w/ EIGRP w/ the IOS you are using.
I think you have to contact the TAC (RP escalation team, not first level) for an authoritative word.
I am curious, did you every open the TAC case? We also have the 3845 and use EIGRP and would like to use BFD.