Configuring the wait-to-restore timer – Cisco 15327 User Manual

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Ethernet Card Software Feature and Configuration Guide, R7.2

Chapter 26 Configuring IEEE 802.17b Resilient Packet Ring

Configuring the Wait-to-Restore Timer

To enable and configure the protection timers, perform the following procedure, beginning in global
configuration mode:

Configuring the Wait-to-Restore Timer

When the failure is fixed, a wait-to-restore timer defines how long before the span reverts to its original
state. This timer protects against false negatives in the detection of the failure status, which can avoid
protection-flapping through the use of larger values. Smaller values result in faster recovery times,
however. This timer can be configured between 0 and 1440 seconds, or configured to not recover
automatically. The default for the timer is 10 seconds.

To enable and configure the wait-to-restore timer, perform the following procedure, beginning in global
configuration mode:

Command

Purpose

Step 1

Router(config)# interface rpr-ieee 0

Activates interface configuration mode to
configure the RPR-IEEE interface.

Step 2

Router(config-if)# rpr-ieee protection

timer

{fast

time | slow time}

Specifies the value of the fast or slow protection
timer:

fast—Ranges from 1 to 20 milliseconds. The
default is 10.

slow—Ranges from 1 to 10 in units of
100 milliseconds. The default is 1
(100 milliseconds).

Step 3

Router(config)# no shut

Enables the RPR-IEEE interface and changes the
mode from the default passthrough.

Step 4

Router(config)# end

Returns to privileged EXEC mode.

Step 5

Router# copy running-config startup-config

(Optional) Saves configuration changes to the
TCC2/TCC2P flash database.