Single-hop echo mode

With BFD echo mode enabled for a static route, the output interface sends BFD echo packets to the destination device, which loops the packets back to test the link reachability.

IMPORTANT:

Do not use BFD for a static route with the output interface in spoofing state.

To configure BFD echo mode for an IPv6 static route:

Step	Command	Remarks
1. Enter system view.	system-view	N/A
2. Configure the source address of echo packets.	bfd echo-source-ipv6 ipv6-address	By default, the source address of echo packets is not configured. The source address of echo packets must be a global unicast address. For more information about this command, see High Availability Command Reference.
3. Configure BFD echo mode for an IPv6 static route.	Method 1:ipv6 route-static ipv6-address prefix-length interface-type interface-number next-hop-address bfd echo-packet [ preference preference-value ] [ tag tag-value ] [ description description-text ] Method 2:ipv6 route-static vpn-instance s-vpn-instance-name ipv6-address prefix-length interface-type interface-number next-hop-address bfd echo-packet [ preference preference-value ] [ tag tag-value ] [ description description-text ]	By default, BFD echo mode for an IPv6 static route is not configured. The next hop IPv6 address must be a global unicast address.

Step

Command

Remarks

1. Enter system view.

system-view

N/A

2. Configure the source address of echo packets.

bfd echo-source-ipv6 ipv6-address

By default, the source address of echo packets is not configured.

The source address of echo packets must be a global unicast address.

For more information about this command, see High Availability Command Reference.

3. Configure BFD echo mode for an IPv6 static route.

Method 1:ipv6 route-static ipv6-address prefix-length interface-type interface-number next-hop-address bfd echo-packet [ preference preference-value ] [ tag tag-value ] [ description description-text ]
Method 2:ipv6 route-static vpn-instance s-vpn-instance-name ipv6-address prefix-length interface-type interface-number next-hop-address bfd echo-packet [ preference preference-value ] [ tag tag-value ] [ description description-text ]

By default, BFD echo mode for an IPv6 static route is not configured.

The next hop IPv6 address must be a global unicast address.

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