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DLSw Implementation Notes

2-3

Figure 2-2. DLSw-Capable Routers on an IP Backbone

Counting the IP Virtual Ring

The DLSw peers at the periphery of a TCP/IP network collectively use an IP

virtual ring, which provides compatibility with LAN requirements (Figure 2-3).

BRR

R = Ring (SRB Segment)

B = Bridge

DLSw-capable

Routers

ource routing segment

BRR

TCP/IP

Network

KEY

1 2 ... 36 37 38 39 40 41 42 43 44 45 46 ... 203 204

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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