R3102-R3103-HP 6600/HSR6600 Routers High Availability Configuration Guide

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Step
Command
Remarks
6. Configure the minimum
interval for receiving BFD
echo packets.
bfd min-echo-receive-interval
value
Optional.
For more information, see the
description of the Required Min
Echo RX Interval field in "BFD
packet format."
The default setting is 400
milliseconds.
7. Configure the minimum
interval for transmitting BFD
control packets.
bfd min-transmit-interval value
Optional.
For more information, see the
description of the Desired Min TX
Interval field in "BFD packet
format."
The default setting is 400
milliseconds.
8. Configure the minimum
interval for receiving BFD
control packets.
bfd min-receive-interval value
Optional.
For more information, see the
description of the Required Min RX
Interval field in "BFD packet
format."
The default setting is 400
milliseconds.
9. Configure the detection time
multiplier.
bfd detect-multiplier value
Optional.
For more information, see the
description of the Detect Mult field
in "BFD packet format."
5 by default.
In Figure 56, if you configure the Desired Min TX Interval as 100 milliseconds, Required Min RX
Interval as 300 milliseconds, and Detect Mult as 5 on Router A, and then configure the Desired Min
TX Interval as 150 milliseconds, Required Min RX Interval as 400 milliseconds, and Detect Mult as 10
on Router B:
 The actual transmitting interval on Router A is 400 milliseconds, which is the greater value
between the minimum interval for transmitting BFD control packets on Router A (100
milliseconds) and the minimum interval for receiving BFD control packets on Router B (400
milliseconds).
 The actual transmitting interval on Router B is 300 milliseconds, which is the greater value
between the minimum interval for transmitting BFD control packets on Router B (150
milliseconds) and the minimum interval for receiving BFD control packets on Router A (300
milliseconds).
 The actual detection time on Router A is 3000 milliseconds, which is 10 × 300 milliseconds
(Detect Mult on Router B × actual transmitting interval on Router B).
 The actual detection time on Router B is 2000 milliseconds, which is 5 × 400 milliseconds
(Detect Mult on Router A × actual transmitting interval on Router A).
The tunnel interfaces of 6604/6608/6616 support BFD. If you do not specify a tunnel template on
the tunnel interface for receiving BFD packets with the service slot slot-number command, the active
main processing unit (MPU) of the device will receive and then discard BFD packets, and the session