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Procedure
Step 1
Run the
display bfd session
{
all
|
static
|
dynamic
|
discriminator
discr-value
|
peer-ip
peer-
ip
[
vpn-instance
vpn-instance-name
] }
verbose
[
slot
slot-id
] command to check information
about the BFD session.
----End
Example
# Display information about all the BFD sessions.
<HUAWEI>
display bfd session all verbose
--------------------------------------------------------------------------------
Session MIndex : 256 (One Hop) State : Up Name : aa
--------------------------------------------------------------------------------
Local Discriminator : 11 Remote Discriminator : 22
Session Detect Mode : Asynchronous Mode Without Echo Function
BFD Bind Type : Interface(GigabitEthernet1/0/0)
Bind Session Type : Static
Bind Peer Ip Address : 224.0.0.184
NextHop Ip Address : 224.0.0.184
Bind Interface : GigabitEthernet1/0/0
FSM Board Id : 1 TOS-EXP : 7
Min Tx Interval (ms) : 10 Min Rx Interval (ms) : 10
Actual Tx Interval (ms): 10 Actual Rx Interval (ms) : 10
Local Detect Multi : 3 Detect Interval (ms) : 30
Echo Passive
:
Enable
Acl Number : --
Destination Port : 3784 TTL : 255
Proc interface status : Disable Process PST : Disable
WTR Interval (ms) : --
Active Multi : 3
Last Local Diagnostic : No Diagnostic
Bind Application : No Application Bind
Session TX TmrID : -- Session Detect TmrID : --
Session Init TmrID : -- Session WTR TmrID : --
Session Echo Tx TmrID : --
PDT Index : FSM-0|RCV-0|IF-0|TOKEN-0
Session Description : --
--------------------------------------------------------------------------------
The command output shows that the
Echo Passive
field indicates
Enable
, which means that the
passive echo function is enabled for the BFD session. If the
Echo Passive
field indicates
Disable
, this means that the passive echo function is disabled for the BFD session. The passive
echo function can be enabled for a BFD session only when the passive echo function is globally
enabled, the ACL rule (if configured) is matched, and the echo function is enabled on the peer.
5.4 Configuring the Association Between the BFD Status
and the Interface Status
By associating the BFD session status with the interface status, you can trigger fast route
convergence. This function is applicable to only the BFD session that uses the default multicast
IP address to detect the single-hop link.
5.4.1 Before You Start
Before associating the BFD session status with the interface status, familiarize yourself with the
usage scenario, complete the pre-configuration tasks, and obtain the required data.
HUAWEI NetEngine80E/40E Router
Configuration Guide - Reliability
5 BFD Configuration
Issue 02 (2014-09-30)
Huawei Proprietary and Confidential
Copyright © Huawei Technologies Co., Ltd.
330