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

8. Troubleshooting
8-32
September 2002 9128-A2-GB20-80
Data Channel Loopbacks on a Frame Relay Link
A network-initiated Data Channel Loopback (DCLB) loops data over the frame
relay link (DS0s) received on the network interface through the FrameSaver unit’s
framing circuitry and back to the same interface.
A DCLB can be controlled over the frame relay link using one of the following
in-band methods:
V.54 Loopback.
ANSI T1.403 Annex B Fractional T1 (FT1) Channel Loopback.
The frame relay service provider can use DCLB to verify the integrity of the frame
relay circuit.
CAUTION:
V.54 and FT1 Loopbacks may affect operation of frame relay PVCs
assigned to the selected port. While in loopback, the frame relay link will
be down so any IP data being sent while this test is active will be
disrupted.
Framer
Other
T1
Interface
DCLB
The T1
Interface
All
1s
98-16223