ADTRAN 4200659L1 - Manual (Page 52)

Chapter 3. Configuration
3-6 MX2800 STS-1 User Manual 61200659L1-1
Network Protection
Enable or disable the unit’s ability to automatically route
information to the backup STS-1 in the event of a primary STS-1
failure. With
N ETWORK P ROTECTION set to E NABLED , all information
is automatically routed to the backup STS-1 in the event that the
primary STS-1 fails. When
N ETWORK P ROTECTION is set to
D ISABLED , the stand-by controller will be used to protect against
failures of the circuitry on the active controller.
Max. Switch Threshold
The value entered in this field determines the number of times per
hour the unit is allowed to switch between controller cards. If the
cards switch more than the
M AX S WITCH T HRESHOLD within one
hour, the unit issues a trap and stops switching cards for the next 24
hours. The default setting is
3 times an hour.
Min. Switching Period
After the unit switches controller cards, the number of seconds
entered in this field must pass before another card switch will be
allowed. The default setting is
10 seconds.
Miscellaneous
Loopback Timeout
Sets the loopback timeout to D ISABLED , 1 MIN . , 5 MIN . , 10 MIN . ,
15 MIN . , 30 MIN . , 45 MIN . or 1 HR .
When choosing a setting for N ETWORK P ROTECTION , there are many
cabling and network provisioning issues to consider. For configuration
examples of the different modes of protection, refer to
Chapter 7, Circuit and Network Redundancy.