Setting Up A Bfd Session - Huawei NetEngine80E Configuration Manual - Reliability

HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
system-view
The system view is displayed.
Step 2 Run:
bfd
BFD is enabled globally and the BFD view is displayed.
Step 3 (Optional) Run:
default-ip-address
The default multicast IP address of BFD is configured.
By default, the multicast IP address used by BFD is 224.0.0.184.
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5.2.3 Setting Up a BFD Session

Creating a BFD session on both ends of a direct link enables BFD to rapidly detect a fault in the
direct link.
Context
Do as follows on both ends of a link to be checked:
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Select one of the following steps based on the type of link checked by BFD:
l To use BFD to detect faults in an IPv4 link, run the following commands as required to
Issue 02 (2011-09-10)
ip-address
NOTE
l Currently, multicast address detection is supported only in BFD for IPv4 but not BFD for IPv6.
Therefore, this command is applicable in only IPv4.
l If more than one BFD session is created for the same link, for example, a Layer 3 interface is connected
by BFD-enabled Layer 2 switches, various default multicast addresses need to be configured for the
switches, distinguishing one BFD session from others and ensuring that BFD packets are forwarded
correctly.
configure a BFD session:
– On a Layer 3 interface with an IP address, run:
bfd cfg-name bind peer-ip peer-ip [ vpn-instance vpn-instance-name ]
interface interface-type interface-number [ source-ip source-ip ]
– If a single-hop BFD session is to be set up on an interface for the first time, the interface
and its peer address must be bound to the BFD session. The bindings cannot be
modified after the BFD session is successfully created.
– During BFD configuration items are being created, the system checks only the format,
not the correctness, of an IP address. Either an incorrect peer or source IP address
leads to a failure in creating a BFD session.
– If BFD and Unicast Reverse Path Forwarding (URPF) are used together, as URPF
checks the source IP address of received packets, configure source-ip to specify a
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