Installation and User Manual
EtherHaul
1200™
EH-INST-02, Issue 4.0
Page 117
Right_Master>set ring 3 action clear
Set done: ring 3
Right_Master>show log
Aug 4 21:43:18 sw cad: local Manual switch at 200 CW unblocked
ACW blocked
Aug 4 21:44:36 sw cad: ERP 200is ready Role acw-rpl
7.5.4
ERP Timers
Different timers are used to determine the time of fault reports and switching in order
to assure only necessary switching for permanent failures.
Timer
Description
Hold-off
Timer for ensuring stability of failure before triggering action to avoid
reporting a fault in case of intermittent failure.
0..10000 mSec (in 100mSec steps)
Guard
Timer for protecting device against old R-APS messages.
10..2000 mSec (in 10mSec steps)
Wait-to-Block
Timer for delaying switching triggered by administrative command (FS/MS).
5000..7000 mSec (in 100mSec steps)
Wait-to-Restore
Timer for delaying revertive operation.
1..12 minutes
7.5.5
ERP Configuration Example
The following example illustrates an ERP configuration:
Left_Master>show ring
ring 1 ring-id : 1
ring 1 type : ring
ring 1 fdb-id : 1
ring 1 role : none
ring 1 cw-port : eth1
ring 1 acw-port : eth0
ring 1 raps-md-level : 7
ring 1 raps-svid : none
ring 1 raps-cvid : 100
ring 1 version : v2
ring 1 revertive : yes
ring 1 hold-off-timer : 0
ring 1 guard-timer : 500
ring 1 wtb-timer : 5500
ring 1 wtr-timer : 1
Right_Slave_72>show ring
ring 1 ring-id : 1
ring 1 type : ring
ring 1 fdb-id : 1
ring 1 role : acw-rpl
ring 1 cw-port : eth0
ring 1 acw-port : eth1
ring 1 raps-md-level : 7
ring 1 raps-svid : none
ring 1 raps-cvid : 100
ring 1 version : v2
ring 1 revertive : yes
ring 1 hold-off-time : 0
ring 1 guard-timer : 500
ring 1 wtb-timer : 5500
ring 1 wtr-timer : 1