3Com S7902E, Руководство по настройке

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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:
To do… Use the command… Remarks
Enter system view system-view —
Enter RRPP domain view rrpp domain domain-id —
Configure the Fast-Fail timer
timer fast-fail-timer
fast-fail-value
Optional
By default, the Fast-Fail timer is
600ms.
Configure the Fast-Hello timer
timer fast-hello-timer
fast-hello-value
Optional
By default, the Fast-Hello timer
is 200ms.
z
The value of the Fast-Fail timer must be equal to or greater than three times the Fast-Hello timer.
z
In a dual-homed-ring network, to avoid temporary loops when the primary ring fails, ensure that the
Fast-Fail timer value is equal to or greater than 600ms, and the difference between the Fast-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 Fast-Hello timer value of the master node of the subring.
Configuring an RRPP Ring Group
To reduce Edge-Hello traffic, you can adopt the RRPP ring group mechanism, that is, assign subrings
with the same edge node/assistant-edge node to an RRPP ring group. An RRPP ring group must be
configured on both the edge node and the assistant-edge node, and can only be configured on these
two types of nodes.
Perform this configuration on both the edge node and the assistant-edge node in an RRPP domain.
Follow these steps to configure an RRPP ring group:
To do… Use the command… Remarks
Enter system view system-view —
Create an RRPP ring group
and enter RRPP ring group
view
rrpp ring-group ring-group-id Required
Assign the specified subrings to
the RRPP ring group domain domain-id ring
ring-id-list
Required