Introduction To Vrrp; Vrrp Overview - 3Com MSR 50 Series Configuration Manual

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Introduction to VRRP

VRRP Overview

VRRP C
ONFIGURATION
When configuring VRRP, go to these sections for information you are interested in:
"Introduction to VRRP" on page 1971
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"Configuring VRRP for IPv4" on page 1979
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"Configuring VRRP for IPv6" on page 1984
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"IPv4-Based VRRP Configuration Example" on page 1987
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"IPv6-Based VRRP Configuration Example" on page 1995
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"Troubleshooting VRRP" on page 2003
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This section covers these topics:
"VRRP Overview" on page 1971
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"VRRP Standby Group Overview" on page 1972
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"VRRP Timers" on page 1974
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"Format of VRRP Packets" on page 1975
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"Principles of VRRP" on page 1976
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"VRRP Tracking" on page 1977
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"VRRP Application (Taking IPv4-Based VRRP for Example)" on page 1977
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Normally, as shown in
gateway as the next hop for every host on a network segment, allowing all
packets destined to the other network segments to be sent over the default route
to the gateway and then be forwarded by the gateway. This enables hosts on a
network segment to communicate with external networks. However, when the
gateway fails, all the hosts using the gateway as the default next-hop router fail to
communicate with the external network.
Figure 583, you can configure a default route with the