Ethernet Switches & Routers

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Posts: 1
Registered: ‎08-02-2011

BGPv4 BFD Fail-over

hi,

Anyone already done it a configuration BGPv4 with BFD fail-over ?

Because i have make this configuration and BFD don't play, no neighbors visible.

Must Be put on a specific configuration interface in addition to router BGP with "bfd-enable" and neighbor X.X.X.X fail-over bfd-enable ?

thk

Super Contributor
Posts: 1,087
Registered: ‎12-13-2009

Re: BGPv4 BFD Fail-over

Hi,

Enabling BFD for BGP4 globally

By default, BFD for BGP4 is disabled and can be first enabled globally and then on each peer. To enable BFD for BGP4 globally, enter commands such as the following.

NetIron# router bgp

NetIron(config-bgp)# bfd-enable

For a single hop EBGP session, the BFD parameters configured under interface will be used because the BFD session for single hop is also shared with other applications. To create a BFD

session for a single hop BGP4 session, you must have BFD enabled and the timers configured for the interface on which single hop BGP4 peering is established.

To configure a multi hop EBGP or IBGP session, enter a command such as the following.

NetIron(config)# router bgp

NetIron(config-bgp)# bfd-enable

NetIron(config-bgp)# bfd min-tx 500 min-rx 500 multiplier 5

Enabling BFD for a specific BGP4 peer

To enable BFD for BGP4 for a specific neighbor or peer, enter a command such as the following

NetIron(config-bgp)# neighbor 12.14.1.1 fail-over bfd-enable

Mark sure you timers match on both ends

Enabling BFD timers for a specific BGP4 peer

To enable BFD timers for a specific neighbor or peer for BGP4, you must first configure the bfd timers, and set the holdover interval by entering commands such as the following.

NetIron(config-bgp)# neighbor 12.14.1.1 bfd min-tx 500 min-rx 500 multiplier 5

NetIron(config-bgp)# bfd holdover-interval 20

Thanks

Michael.

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