Configuring bfd for static routes, Bidirectional control mode – H3C Technologies H3C S5560 Series Switches User Manual

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10

Step Command

Remarks

4.

(Optional.) Delete all
static routes,

including the default
route.

delete [ vpn-instance vpn-instance-name ]
static-routes all

To delete one static route,
use the undo ip route-static
command.

Configuring BFD for static routes

IMPORTANT:

Enabling BFD for a flapping route could worsen the situation.

BFD provides a general-purpose, standard, medium-, and protocol-independent fast failure detection

mechanism. It can uniformly and quickly detect the failures of the bidirectional forwarding paths between

two routers for protocols, such as routing protocols and MPLS.
For more information about BFD, see High Availability Configuration Guide.

Bidirectional control mode

To use BFD bidirectional control detection between two devices, enable BFD control mode for each
device's static route destined to the peer.
To configure a static route and enable BFD control mode, use one of the following methods:

Specify an output interface and a direct next hop.

Specify an indirect next hop and a specific BFD packet source address for the static route.

To configure BFD control mode for a static route (direct next hop):

Step Command

Remarks

1.

Enter system view.

system-view

N/A

2.

Configure BFD

control mode for a
static route.

Method 1:

ip route-static dest-address { mask-length | mask }
interface-type interface-number next-hop-address

bfd control-packet [ preference preference-value ]

[ tag tag-value ] [ description description-text ]

Method 2:

ip route-static vpn-instance s-vpn-instance-name

dest-address { mask-length | mask } interface-type
interface-number next-hop-address
bfd

control-packet [ preference preference-value ] [ tag

tag-value ] [ description description-text ]

By default, BFD control
mode for a static route is
not configured.

To configure BFD control mode for a static route (indirect next hop):

Step Command

Remarks

1.

Enter system view.

system-view

N/A

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