Enabling Ospfv3 Bfd At Interface Level - Huawei Quidway NetEngine80E Configuration Manual

HUAWEI NetEngine80E/40E Router
Configuration Guide - IP Routing
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6.10.4 Enabling OSPFv3 BFD at Interface Level

You can configure BFD on a specified interface for fast link failure detection.
Procedure
Step 1 Run:
system-view
The system view is displayed.
Step 2 Run:
bfd
BFD is globally configured.
Step 3 Run:
quit
Return to the system view.
Step 4 Run:
interface interface-type interface-number
The interface view is displayed.
Step 5 Run:
ospfv3 bfd enable [ instance instance-id ]
OSPFv3 BFD is enabled on the interface.
Issue 02 (2014-09-30)
NOTE
l Actual interval at which BFD packets are transmitted on the local devices = Max { configured interval
min-transmit-value at which BFD packets are transmitted, configured interval min-receive-value at
which BFD packets are received on the peer device }
l Actual interval at which BFD packets are received on the local devices = Max { configured interval
min-transmit-value at which BFD packets are transmitted on the peer device, configured interval min-
receive-value at which BFD packets are received on the local device }
l Actual time for detecting BFD packets = Actual interval at which BFD packets are received on the
local device x Configured detection multiplier detect-multiplier-value
For example:
l On the local device, the configured interval at which BFD packets are transmitted is 200 ms; the interval
at which BFD packets are received is set to 300 ms; the detection multiplier is 4.
l On the peer device, the configured interval at which BFD packets are transmitted is 100 ms; the interval
at which BFD packets are received is 600 ms; the detection multiplier is 5.
Then:
l On the local device, the actual interval at which BFD packets are transmitted is 600 ms calculated by
using the formula max {200 ms, 600 ms}; the interval at which BFD packets are received is 300 ms
calculated by using the formula max {100 ms, 300 ms}; the detection period is 1500 ms calculated by
multiplying 300 ms by 5.
l On the peer device, the actual interval at which BFD packets are transmitted is 300 ms calculated by
using the formula max {100 ms, 300 ms}, the actual interval at which BFD packets are received is 600
ms calculated by using the formula max {200 ms, 600 ms}, and the detection period is 2400 ms
calculated by multiplying 600 ms by 4.
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