Avaya Configuring DLSw Services User Manual Page 26
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Configuring DLSw Services
1-2
303523-A Rev. 00
DLSw Networking Overview
DLSw provides a standards-based mechanism for reliably transporting
connection-oriented SNA and NetBIOS data across a network. Originally defined
in RFC 1434, and currently in RFC 1795 with additional enhancements defined in
DLSw Version 2 and RFC 2166, DLSw resolves the issues associated with
transporting SNA and NetBIOS information across a multiprotocol backbone.
Specifically, DLSw:
• Prevents sessions from timing out due to slow network response time
• Automatically reroutes traffic around failed links
• Improves response time by reducing network overhead
• Enables multiple locations to interconnect without requiring a network
manager to reconfigure existing bridges
Additionally, the Bay Networks DLSw implementation provides several benefits,
including:
• Bay Networks symmetric multiprocessor architecture, providing a highly
scalable and reliable implementation
• Advanced flow control, ensuring that the router-based network delivers
information as reliably as existing SNA networks
• Integrated SDLC-to-LLC2 conversion, enabling the customer to reduce the
cost of front-end processor (FEP) ports (for example, 3745), maintenance and
software
• RFC 1490 (LLC2 over Frame Relay) support, enabling a Bay Networks router
to communicate across a Frame Relay network directly to a front-end
processor or other device that supports this protocol
• DLSw prioritization, allowing preferred DLSw traffic to receive higher
priority than other traffic
The Bay Networks DLSw implementation is fully interoperable with RFC 1434,
RFC 1795, and RFC 2166 DLSw implementations.
- Configuring DLSw 1
- Services 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 303523-A Rev. 00 10
- Before You Begin 19
- Text Conventions 20
- Acronyms 21
- How to Get Help 23
- Chapter 1 25
- Data Link Switching Overview 25
- DLSw Networking Overview 26
- RFC 1795 Support 27
- UDP Explorer Frames 29
- RFC 2166 Multicast Support 30
- Figure 1-3. Multicast DLSw 34
- Single-Switch Services 37
- Dual-Switch Services 39
- SDLC Support 41
- Secondary SDLC Support 43
- Frame Relay Support 46
- QLLC Support 48
- DLSw/APPN Boundary Function 48
- DLSw/APPN Components 50
- DLSw Router 52
- DLSw Backup Peer Support 53
- DLSw Filtering 53
- Protocol Prioritization 54
- Chapter 2 57
- DLSw Implementation Notes 57
- Combining DLSw and SRB 58
- SRB network 59
- Virtual Rings 60
- DLSw and SRB on a Circuit 61
- DLSw and Bridging Services 62
- DLSw with Translation Bridge 63
- Multiple DLSw Peers on a LAN 66
- Memory Requirements 66
- TCP Considerations 67
- Flow Control 67
- TCP Flow Control 68
- DLSw Flow Control 68
- DLSw Prioritization 69
- Backup Peers 70
- Chapter 3 71
- DLSw Configuration Overview 71
- DLSw Basic Global Parameters 73
- DLSw SAP Table 74
- SAP Table 75
- DLSw Slot Table 80
- DLSw Peer IP Table 82
- Broadcast Peers 84
- Unconfigured Peers 85
- SDLC Line Parameters 87
- Local Devices 87
- Boundary Access Node (BAN) 89
- Configuring DLSw Packaging 92
- Configuring DLSw Backup Peers 93
- Chapter 4 95
- Configuring DLSw Services 100
- Starting DLSw 101
- Mapping Frame Relay Addresses 106
- Configuring DLSw and APPN 127
- Chapter 5 137
- Editing DLSw Parameters 137
- Accessing DLSw Parameters 138
- Click on OK 140
- Enabling a DLSw Interface 158
- Click on Add 173
- Adding a DLSw SAP Table Entry 178
- Click on Apply 192
- Click on Done 192
- (continued) 199
- (continued) 200
- Deleting DLSw from a Node 212
- Chapter 6 213
- Using DLSw Prioritization 213
- DLSw Priority Queues 215
- The Dequeuing Process 216
- Weight = 217
- Size of packet 217
- Bandwidth % 217
- - Time in dequeue list 217
- Queue Depth 219
- Appendix A 245
- DLSw Default Settings 245
- Appendix B 251
- Predefined DLSw Criteria 252
- DLSw Reference Points 252
- (bits) Length (bits) 253
- Specifying MAC Address Ranges 254
- Table B-6. SAP Codes 256
- Appendix C 257
- Troubleshooting DLSw 257
- * Enabled by default 258
- Table C-2. Log Messages 259
- Table C-3. DLSw State Table 260
- Table C-4. DLSw Event Table 260
- DLSw Session Setup 263
- Reviewing the Network Log 266
- Unexpected protocol action 276
- TCP open error 29 277
- DLSw Troubleshooting Tables 278
- IBMLAN.INI 282
- NBASE.exe 283
- SDLC.exe 283
- Verifying the WAN Cabling 285
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