HP 6125XLG R2306-HP 6125XLG Blade Switch High Availability Command Reference - Page 107

bfd echo enable, Predefined user roles, Parameters, Usage guidelines, Examples, Syntax, Default, Views

Page 107 highlights

Predefined user roles network-admin Parameters value: Specifies a single-hop detection time multiplier in the range of 3 to 50. Usage guidelines The detection time multiplier determines the maximum number of concurrent BFD packets (including control packets and echo packets) that can be discarded. Table 30 Detection interval calculation method Mode Detection interval Echo packet mode Detection time multiplier of the sender × actual packet sending interval of the sender Control packet mode BFD session in Detection time multiplier of the receiver × actual asynchronous mode packet sending interval of the receiver Control packet mode BFD session in demand Detection time multiplier of the sender × actual mode packet sending interval of the sender Examples # Configure the single-hop detection time multiplier as 6 on VLAN-interface 11. system-view [Sysname] interface vlan-interface 11 [Sysname-Vlan-interface11] bfd detect-multiplier 6 bfd echo enable Use bfd echo enable to enable the echo packet mode. Use undo bfd echo enable to restore the default. Syntax bfd echo enable undo bfd echo enable Default The echo packet mode is disabled. Views Interface view Predefined user roles network-admin 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 periodically sends echo packets to detect link connectivity and decreases the control packet receiving rate at the same time. 102

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102
Predefined user roles
network-admin
Parameters
value
: Specifies a single-hop detection time multiplier in the range of 3 to 50.
Usage guidelines
The detection time multiplier determines the maximum number of concurrent BFD packets (including
control packets and echo packets) that can be discarded.
Table 30
Detection interval calculation method
Mode
Detection interval
Echo packet mode
Detection time multiplier of the sender × actual
packet sending interval of the sender
Control
packet
mode
BFD
session
in
asynchronous mode
Detection time multiplier of the receiver × actual
packet sending interval of the receiver
Control packet mode BFD session in demand
mode
Detection time multiplier of the sender × actual
packet sending interval of the sender
Examples
# Configure the single-hop detection time multiplier as 6 on VLAN-interface 11.
<Sysname> system-view
[Sysname] interface vlan-interface 11
[Sysname-Vlan-interface11] bfd detect-multiplier 6
bfd echo enable
Use
bfd echo enable
to enable the echo packet mode.
Use
undo
bfd echo enable
to restore the default.
Syntax
bfd echo enable
undo bfd echo enable
Default
The echo packet mode is disabled.
Views
Interface view
Predefined user roles
network-admin
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 periodically sends echo packets to detect link connectivity and decreases the control
packet receiving rate at the same time.