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saurabh joshi
Beginner

BFD with iBGP Cisco-Juniper

Hello,

I am in situation to establish BFD with BGP between Juniper and CIsco.

Please find the below config at both end.

However i am not able to see the Session established between the two.

My bgp session is up.

Any help will be appreciated.

Junos

local-address x.x.x.x;

neighbor y.y.y.y {

    authentication-key "$9$olJUimPQ/9pgokmTzCAvWLXx-VwY4JGdV"; ## SECRET-DATA

    bfd-liveness-detection {

        minimum-interval 100;

        multiplier 3;

    }

}

Cisco
interface GigabitEthernet0/2/0
ip address x.x.x.x
ip ospf authentication message-digest
ip ospf message-digest-key 1 md5 7 10670D1C043E1519
ip ospf network point-to-point
negotiation auto
bfd interval 50 min_rx 100 multiplier 3
neighbor x.x.x.x remote-as 55644
neighbor x.x.x.x password 7 0808484B08300205325A5E57
neighbor x.x.x.x update-source Loopback1
neighbor x.x.x.x fall-over bfd
neighbor x.x.x.x next-hop-self
neighbor x.x.x.x send-community both
neighbor x.x.x.x soft-reconfiguration inbound
{master}[edit]
admin@IGW-MUM-R01# run show bfd session
                                                  Detect   Transmit
Address                  State     Interface      Time     Interval  Multiplier
223.196.5.6              Down                     0.000     1.000        3
1 sessions, 1 clients
Cumulative transmit rate 1.0 pps, cumulative receive rate 0.0 pps
IGW-DEL-R01(config-router)#do sho bfd nei
OurAddr       NeighAddr     LD/RD  RH/RS  Holddown(mult)  State     Int
Also i will be running BFD for OSPF on the same physical path.

3 REPLIES 3
Ivan Krimmel
Rising star

BFD is not multi-hop aware.

Does that mean BFD can not support ibgp on loopback interfaces?

http://www.cisco.com/en/US/docs/ios/12_0s/feature/guide/fs_bfd.html says:

BFD works only for directly connected neighbors. BFD neighbors must be no more than one IP hop away. Multihop configurations are not supported.

but at the same time JunOS guide says it is:

The JUNOS software also supports BFD over multihop static routes.

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