R211x-HP Flexfabric 11900 High Availability Command Reference

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Usage guidelines
If you enable the echo packet mode for a BFD session in which control packets are sent and the session
comes up, BFD does the following:
• Periodically sends echo packets to detect link connectivity.
• Decreases the control packet receiving rate at the same time.
Examples
# Enable the echo packet mode on VLAN-interface 11.
<Sysname> system-view
[Sysname] interface vlan-interface 11
[Sysname-Vlan-interface11] bfd echo enable
bfd echo-source-ip
Use bfd echo-source-ip to configure the source IP address of BFD echo packets.
Use undo bfd echo-source-ip to remove the configured source IP address of BFD echo packets.
Syntax
bfd echo-source-ip ip-address
undo bfd echo-source-ip
Default
No source IP address is configured for BFD echo packets.
Views
System view
Predefined user roles
network-admin
mdc-admin
Parameters
ip-address: Specifies the source IP address of BFD echo packets.
Usage guidelines
The source IP address cannot be on the same network segment as any local interface's IP address.
Otherwise, a large number of ICMP redirect packets might be sent from the peer, resulting in link
congestion.
Examples
# Configure the source IP address of BFD echo packets as 8.8.8.8.
<Sysname> system-view
[Sysname] bfd echo-source-ip 8.8.8.8
bfd echo-source-ipv6
Use bfd echo-source-ipv6 to configure the source IPv6 address of BFD echo packets.
Use undo bfd echo-source-ipv6 to remove the configured source IPv6 address of BFD echo packets.