Configuring Rrpp Fast Detection; Enabling Fast Detection; Configuring Fast Detection Timers - H3C S5820X SERIES High Availability Configuration Manual

CAUTION:
The Fail timer value must be equal to or greater than three times the Hello timer value.
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To avoid temporary loops when the primary ring fails in a dual-homed-ring network, ensure that the
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difference between the Fail timer value on the master node of the subring and that on the master node
of the primary ring is greater than twice the Hello timer value of the master node of the subring.
Perform this configuration on the master node of an RRPP domain.
Follow these steps to configure RRPP timers:
To do...
Enter system view
Enter RRPP domain view
Configure the Hello timer and Fail
timer for the RRPP domain

Configuring RRPP fast detection

Enabling fast detection

Perform this configuration on the master node, edge node, and assistant-edge node in the RRPP domain
to be configured.
Follow these steps to enable fast detection:
To do...
Enter system view
Enter RRPP domain view
Enable fast detection
CAUTION:
To configure fast detection on the master node of a subring, make sure that the edge node and
•
assistant-edge node of the subring supports fast detection. Otherwise, H3C does not recommend
configuring fast detection on the master node of the subring.
When configuring fast detection in an RRPP domain, enable fast detection first on the edge node, and
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then on the assistant-edge node. Otherwise, the assistant-edge node may fail to receive Fast-Edge-Hello
packets and erroneously conclude that the master node is faulty.

Configuring fast detection timers

Perform this configuration on the master node in the RRPP domain to be configured.
Follow these steps to configure RRPP fast detection timers:
Use the command...
system-view
rrpp domain domain-id
timer hello-timer hello-value
fail-timer fail-value
Use the command...
system-view
rrpp domain domain-id
fast-detection enable
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Remarks
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Required
By default, the Hello timer value is
1 second and the Fail timer value is
3 seconds.
Remarks
—
—
Required
Disabled by default