2-12
Stinger® ADSL 48-Port Annex C LIM Guide
Configuring LIM and LIM Port Redundancy
Configuring LIM port redundancy
2
Activate redundancy for failed port 6 in slot 4.
admin> read sdsl {1 4 6}
admin> set sparing-mode = manual
admin> write
LOG notice, Shelf 1, Slot 8, Time: 12:07:51--
LIM 16 port 6 ACTIVATED as spare for LIM 4 Port 6
Automatic LIM port redundancy
Automatic LIM port redundancy detects a LIM port failure and automatically transfers the port
connection to the same port on the spare LIM. When automatic LIM port redundancy is
activated, the primary LIM port is monitored. If modem errors exceed the specified thresholds,
the port connection to the primary LIM is transferred to the spare (secondary) LIM.
Monitoring continues on the secondary LIM port. If modem errors again exceed thresholds, the
connection is transferred back to the primary LIM port and the automatic redundancy process
stops. You can restart the process by resetting the system or by setting the
sparing-mode
parameter to
inactive
and then back to
automatic
.
The parameters used for automatic LIM port redundancy are found in the
Auto-LIM-Sparing-Config subprofile of the LIM-Sparing-Config profile for the spare LIM of
the same type.
For example, suppose you want to set up automatic port redundancy for port 1 in an SDSL
LIM in slot 5 with an error threshold of 50. The spare SDSL LIM is located in slot 16 of a
Stinger FS.
The threshold parameters reside in the Auto-LIM-Sparing-Config subprofile of the
LIM-Sparing-Config profile in slot 16.
1
List the parameters.
admin> list 1
[in LIM-SPARING-CONFIG/{ shelf-1 slot-16 0
}:auto-lim-sparing-config:lim-sparing-config[1]]
active = yes
error-averaging-period = 10
error-threshold = 100
up-down-threshold = 3
modem-failure-threshold = 12
2
Set the threshold parameter.
admin > set error-threshold = 50
admin > write
SDSL/{ shelf-1 slot-16 0 } written
3
Activate automatic redundancy for port 1 in slot 5.
admin > read sdsl {1 5 1}
admin > set sparing-mode = automatic
admin > write
SDSL/{ shelf-1 slot-5 1 } written
