Manual
Table Of Contents
- Contents
- About This Guide
- 1. About the FrameSaver SLV
- 2. User Interface and Basic Operation
- 3. Configuration Procedures
- 4. Configuration Options
- Using the Easy Install Feature
- Using RIP with FrameSaver SLV CSU/DSUs
- Entering System Information and Setting the System Clock
- Setting Up the Modem
- Setting Up Auto-Configuration
- Setting Up Dial Backup
- PVC Backup Over the Network Interface
- Setting Up Back-to-Back Operation
- Configuration Option Tables
- Configuring the Overall System
- Configuring Physical Interfaces
- Assigning Time Slots/Cross Connections
- Configuring Frame Relay for an Interface
- Manually Configuring DLCI Records
- Configuring PVC Connections
- Configuring the IP Path List
- Setting Up Management and Communication Options
- Configuring the Criteria for Automatic Backup
- 5. Configuring the FrameSaver SLV Router
- FrameSaver SLV Router Overview
- IP Routing
- Address Resolution Protocol
- Proxy ARP
- Interface Configuration
- Network Address Translation
- Network Address Port Translation
- Dynamic Host Configuration Protocol Server
- DHCP Relay Agent
- Router Security
- Provisioning the Router Interface
- Configuring the Router Using Terminal Emulation
- 6. Security and Logins
- 7. Operation and Maintenance
- 8. Troubleshooting
- 9. Setting Up OpenLane for FrameSaver Devices and Activating SLM Features
- 10. Setting Up NetScout Manager Plus for FrameSaver Devices
- 11. Setting Up Network Health for FrameSaver Devices
- A. Menu Hierarchy
- B. SNMP MIBs and Traps, and RMON Alarm Defaults
- C. Router CLI Commands, Codes, and Designations
- D. Router Command Line Summaries and Shortcuts
- E. Connectors, Cables, and Pin Assignments
- F. Technical Specifications
- G. Equipment List
- Index

4. Configuration Options
9128-A2-GB20-80 September 2002
4-17
Restricting Automatic Backup and Configuring Backup Timers
You can specify when auto backup is allowed to occur. If backup is restricted and a
backup is active when the allowed time for backups is over, then the backup is
terminated and the data is returned to the primary data path regardless of the
primary path’s condition.
You can restrict auto backup to occur only:
On certain days of the week
At certain times of the day
The following additional features can be configured:
Delays can be configured to control how long the unit will wait before initiating
backup when a DLCI is declared down, and how long it will wait to restore
service once the DLCI is declared operational again.
A threshold can be set to determine how many times a primary destination
DLCI can transition between Active and Inactive before the unit initiates
backup.
Procedure
To set the criteria and backup timers for automatic backup:
1. Enable Auto Backup.
Main Menu
→
Configuration
→
Auto-Backup Criteria
When a failure occurs, the unit automatically enables the Alternate Link and
traffic is rerouted over the backup (alternate) interface.
2. Specify the amount of delay after a DLCI is declared down before backup is
initiated (DLCI Down Backup Activation Delay).
3. Set the threshold for transitions of the DLCI’s status before backup is initiated
(DLCI Down Backup Activation Transmission Threshold).
4. Specify the amount of delay after a DLCI is declared operation before backup
is ended (Backup Restoration Delay).
5. Specify When Auto Backup Allowed – Always or Restrict. If Restrict is
selected, specify the days and hours of the week during which automatic
backup can take place.
6. S
ave the configuration.
See Table 4-26, Auto Backup Criteria Options, for configuration information.