GS2200-48 User’s Guide
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VRRP
This chapter shows you how to configure and monitor the Virtual Router
Redundancy Protocol (VRRP) on the Switch.
30.1 VRRP Overview
Each host on a network is configured to send packets to a statically configured
default gateway (this Switch). The default gateway can become a single point of
failure. Virtual Router Redundancy Protocol (VRRP), defined in RFC 2338, allows
you to create redundant backup gateways to ensure that the default gateway of a
host is always available.
In VRRP, a virtual router (VR) represents a number of physical layer-3 devices. An
IP address is associated with the virtual router. A layer-3 device having the same
IP address is the preferred master router while the other Layer-3 devices are the
backup routers. The master router forwards traffic for the virtual router. When the
master router becomes unavailable, a backup router assumes the role of the
master router until the master router comes back up and takes over.
The following figure shows a VRRP network example with the switches (A and B)
implementing one virtual router VR1 to ensure the link between the host X and
the uplink gateway G. Host X is configured to use VR1 (192.168.1.20) as the
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Страница 8: ...Safety Warnings GS2200 48 User s Guide 8 ...
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Страница 28: ...Chapter 1 Getting to Know Your Switch GS2200 48 User s Guide 28 ...
Страница 32: ...Chapter 2 Hardware Installation and Connection GS2200 48 User s Guide 32 ...
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Страница 62: ...Chapter 6 System Status and Port Statistics GS2200 48 User s Guide 62 ...
Страница 76: ...Chapter 7 Basic Setting GS2200 48 User s Guide 76 ...
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Страница 102: ...Chapter 9 Static MAC Forward Setup GS2200 48 User s Guide 102 ...
Страница 122: ...Chapter 11 Spanning Tree Protocol GS2200 48 User s Guide 122 ...
Страница 126: ...Chapter 12 Bandwidth Control GS2200 48 User s Guide 126 ...
Страница 148: ...Chapter 17 Port Security GS2200 48 User s Guide 148 ...
Страница 156: ...Chapter 18 Classifier GS2200 48 User s Guide 156 ...
Страница 164: ...Chapter 19 Policy Rule GS2200 48 User s Guide 164 ...
Страница 214: ...Chapter 24 IP Source Guard GS2200 48 User s Guide 214 Figure 98 DHCP Snooping ...
Страница 235: ...235 PART IV IP Application Static Routing 237 RIP 239 Differentiated Services 241 DHCP 249 VRRP 259 ...
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Страница 278: ...Chapter 31 Maintenance GS2200 48 User s Guide 278 ...
Страница 304: ...Chapter 34 Syslog GS2200 48 User s Guide 304 ...
Страница 312: ...Chapter 35 Cluster Management GS2200 48 User s Guide 312 ...
Страница 316: ...Chapter 36 MAC Table GS2200 48 User s Guide 316 ...
Страница 320: ...Chapter 37 IP Table GS2200 48 User s Guide 320 ...
Страница 324: ...Chapter 39 Routing Table GS2200 48 User s Guide 324 ...
Страница 327: ...327 PART VI Product Specifications Product Specifications 329 ...
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Страница 336: ...Chapter 41 Product Specifications GS2200 48 User s Guide 336 ...
Страница 337: ...337 PART VII Appendices and Index IP Addresses and Subnetting 339 Legal Information 349 Index 353 ...
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Страница 352: ...Appendix B Legal Information GS2200 48 User s Guide 352 ...
Страница 362: ...Index GS2200 48 User s Guide 362 ...