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Chapter 19 IP Configuration
NetAtlas Workgroup User’s Guide
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OSPF offers some advantages over traditional vector-space routing protocols (such as RIP).
The following table summarizes some of the major differences between OSPF and RIP.
19.8.1 OSPF Autonomous Systems and Areas
An OSPF autonomous system can be divided into logical areas. Each area represents a group
of adjacent networks. All areas are connected to a backbone (also known as area 0). The
backbone is the transit area to route packets between two areas. A stub area, at the edge of an
AS, is not a transit area since there is only one connection to the stub area.
19.8.2 Interfaces and Virtual Links
An OSPF interface is a link between a layer 3 device and an OSPF network. An interface has
state information, an IP address and subnet mask associated with it. When you configure an
OSPF interface, you first set an interface to transmit OSPF traffic and add the interface to an
area.
You can configure a virtual link to establish/maintain connectivity between a non-backbone
area and the backbone. The virtual ink must be configured on both layer 3 devices in the non-
backbone area and the backbone.
19.8.3 Configuring Basic OSPF Settings
Follow the steps below to activate OSPF and configure basic settings.
1
In the Device Panel list, right-click on a device.
2
Click
Configuration > IP Configuration
>
OSPF
.
Table 117
OSPF vs. RIP
OSPF
RIP
Network Size
Large
Small (with up to 15 routers)
Metrics
Bandwidth, hop count, throughput, round
trip time and reliability.
Hop count
Convergence Fast
Slow
Summary of Contents for NetAtlas Workgroup
Page 2: ......
Page 6: ...Document Conventions NetAtlas Workgroup User s Guide 6 ...
Page 8: ...Contents Overview NetAtlas Workgroup User s Guide 8 ...
Page 16: ...Table of Contents NetAtlas Workgroup User s Guide 16 ...
Page 21: ...List of Figures NetAtlas Workgroup User s Guide 21 Figure 168 SNMPc Edit Button Bar Icons 230 ...
Page 22: ...List of Figures NetAtlas Workgroup User s Guide 22 ...
Page 27: ...27 PART I Introduction Introduction 29 Main EMS Screen 33 ...
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Page 32: ...Chapter 1 Introduction NetAtlas Workgroup User s Guide 32 Figure 5 EMS Main Screen ...
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Page 52: ...Chapter 3 Switch Manager NetAtlas Workgroup User s Guide 52 ...
Page 100: ...Chapter 8 Performance NetAtlas Workgroup User s Guide 100 ...
Page 118: ...Chapter 10 Maintenance NetAtlas Workgroup User s Guide 118 ...
Page 122: ...Chapter 11 Tools NetAtlas Workgroup User s Guide 122 ...
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Page 190: ...Chapter 17 Multicast Configuration NetAtlas Workgroup User s Guide 190 ...
Page 224: ...Chapter 20 Troubleshooting NetAtlas Workgroup User s Guide 224 ...
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Page 232: ...Appendix B Alarm Types and Causes NetAtlas Workgroup User s Guide 232 ...