R3102-R3103-HP 6600/HSR6600 Routers High Availability Configuration Guide

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Step
Command
Remarks
1. Enter system view.
system-view
N/A
2. Enter RPR logical interface
view.
interface rpr interface-number
N/A
3. Set the hold off timer.
rpr timer holdoff holdoff-value
0 milliseconds by default.
Configuring the keepalive timer
A station sends single choke fairness frames (SCFFs) periodically to notify the neighbor stations of its
normal operation state. When a station fails to receive an SCFF, a keepalive timer starts. If no SCFF
frame is received after the timer expires, the station sends an SF protection request.
To configure the keepalive timer:
Step
Command
Remarks
1. Enter system view.
system-view
N/A
2. Enter RPR logical interface
view.
interface rpr interface-number
N/A
3. Set the keepalive timer.
rpr timer keepalive
keepalive-value
3 milliseconds by default.
Configuring the topology stability timer
When a station detects a topology change on the ring, it starts the topology stability timer and begins
to collect topology information to update its topology database. After the timer expires, the station
checks the validity of received topology information. If the information is valid, the station enters
topology valid state. If not, the station restarts the timer.
To configure the topology stability timer:
Step
Command
Remarks
1. Enter system view.
system-view
N/A
2. Enter RPR logical interface
view.
interface rpr interface-number
N/A
3. Set the topology stability
timer.
rpr timer stability stability-value
40 milliseconds by default.
Configuring the TC timers
The TC fast/slow timer defines the fast/slow interval at which TC frames are sent. When the ring
topology checksum changes, five TC frames are sent at the fast interval. When the ring topology is
stable, TC frames are sent at the slow interval.
To configure the TC timers: