Avaya Configuring DLSw Services User Manual Page 33
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Data Link Switching Overview
1-11
In both single and dual switch-to-switch networks, you must map the addresses of
the SDLC devices to Token Ring/802.5 addresses. To map the addresses, you
configure the SDLC devices as local devices, enabling them to appear to the
network as natively attached LAN devices. Chapter 5 describes how to configure
local devices.
Refer to
Configuring SDLC Services
for information on configuring and tuning
SDLC on a Bay Networks router.
Frame Relay Support
Bay Networks routers support LLC2 routed over Frame Relay (also known as
native SNA over Frame Relay) based on RFC 1490. RFC 1490 describes an
encapsulation method for carrying internetwork traffic over a Frame Relay
backbone. This implementation of LLC2 also complies with the Frame Relay
Forum “Protocol Encapsulation over Frame Relay Implementation Agreements,”
which (1) defines how routed SNA traffic traverses a Frame Relay network and (2)
adds RFC 1490 support for Frame Relay to DLSw and APPN.
LLC2 over Frame Relay allows native SNA traffic (originating from SDLC,
LAN- or WAN-attached devices) to communicate over public or private Frame
Relay networks directly with IBM 3745 or 3746 communications controllers.
Devices can communicate with intermediate routing nodes or in a single-switch
configuration function as a Frame Relay Access Device (FRAD).
Figure 1-7 illustrates the connection of a host through a Frame Relay network, in
a configuration with multiprotocol traffic to other locations.
- Configuring DLSw Services 1
- Bay Networks Software License 3
- (continued) 4
- Contents 5
- About This Guide 17
- Before You Begin 18
- InfoFACTS 19
- World Wide Web 19
- How to Get Help 20
- Conventions 20
- Acronyms 21
- Chapter 1 23
- Data Link Switching Overview 23
- DLSw Networking Overview 24
- DLSw Single-Switch Services 27
- DLSw Dual Switch Services 28
- SDLC Support 30
- Integrated SDLC Conversion 31
- Frame Relay Support 33
- DLSw Filtering 35
- DLSw and Related Protocols 36
- Chapter 2 39
- DLSw Implementation Notes 39
- Counting SRB LANs and Bridges 40
- Counting the IP Virtual Ring 41
- Counting the Internal LAN 44
- Counting the DLSw Bridge 45
- Parallel Data Paths 47
- Source Routing Bridge 48
- Multiple DLSw Peers on a LAN 49
- DLSw and Bridging Services 49
- DLSw with Translation Bridge 51
- Memory Requirements 52
- TCP Considerations 53
- Flow Control 54
- LLC2 Flow Control 55
- TCP Flow Control 55
- Performance 56
- Chapter 3 57
- DLSw Configuration Overview 57
- DLSw SAP Table 61
- DLSw Slot Table 62
- DLSw Configuration Overview 63
- DLSw Peer IP Table 65
- Simplifying the Peer IP Table 66
- Configuration Objects for SDLC 68
- Local Devices 70
- Optional Configuration Objects 71
- Chapter 4 75
- Enabling DLSw Services 75
- 2. Click on OK 76
- Mapping Frame Relay Addresses 79
- Adding Slot IP Addresses 81
- Adding DLSw Peer IP Addresses 83
- 4. Click on Done 85
- Subsequent DLSw Configuration 99
- Chapter 5 101
- Editing DLSw Parameters 101
- Accessing DLSw Parameters 102
- (Figure 5-1) and then 103
- Select Protocols➔DLSw➔Global 103
- 3. Click on OK 104
- Enabling a DLSw Interface 113
- 1. Click on Add 118
- 3. Click on Done 121
- Click on Add 122
- 2. Click on Delete 125
- Adding a DLSw SAP Table Entry 127
- Click on Done 130
- 3. Click on Delete 131
- 2. Select the entry to edit 141
- Click on Apply 142
- Deleting DLSw from the Node 154
- Chapter 6 155
- Using DLSw Prioritization 155
- DLSw Priority Queues 157
- The Dequeuing Process 158
- The Dequeue List 159
- Weighted Dequeuing Algorithm 159
- Queue Depth 161
- Select ENABLED 164
- Click on OK 164
- 2. Click on Template 177
- Appendix A 187
- DLSw Default Settings 187
- Appendix B 191
- Predefined DLSw Criteria 192
- DLSw Reference Points 192
- Length (bits) 193
- Specifying MAC Address Ranges 194
- Table B-6. SAP Codes 196
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