Configuring Fast Detection Timers; Configuring An Rrpp Ring Group - 3Com S7906E Configuration Manual

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...
Enter system view
Enter RRPP domain view
Configure the Fast-Fail timer
Configure the Fast-Hello timer
The value of the Fast-Fail timer must be equal to or greater than three times the Fast-Hello timer.
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...
Enter system view
Create an RRPP ring group
and enter RRPP ring group
view
Assign the specified subrings to
the RRPP ring group
Use the command...
system-view
rrpp domain domain-id
timer fast-fail-timer
fast-fail-value
timer fast-hello-timer
fast-hello-value
Use the command...
system-view
rrpp ring-group ring-group-id
domain domain-id ring
ring-id-list
1-18
Remarks
—
—
Optional
By default, the Fast-Fail timer is
600ms.
Optional
By default, the Fast-Hello timer
is 200ms.
Remarks
—
Required
Required