H3C Technologies H3C SecPath F1000-E - Manual (Page 2)

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VRRP Configuration
This chapter includes these sections:
• VRRP Overview
• VRRP Standard Protocol Mode
• VRRP Load Balancing Mode
• Configuring VRRP for IPv4
• Configuring VRRP for IPv6
• IPv4-Based VRRP Configuration Examples
• IPv6-Based VRRP Configuration Examples
• Troubleshooting VRRP
NOTE:
•
The term router in this document refers to network routing devices running a routing protocol.
• At present, the interfaces that VRRP involves can only be Layer 3 Ethernet interfaces, VLAN interfaces,
and Layer 3 aggregate interfaces unless otherwise specified.
• VRRP cannot be configured on an interface of an aggregation group.
VRRP Overview
Typically, as shown in Figure 1 , you can configure a default route with the gateway as the next hop for
every host on a network segment. All packets destined to other network segments are sent over the
default route to the gateway, which then forwards the packets. However, when the gateway fails, all the
hosts that use the gateway as the default next-hop router fail to communicate with external networks.
Figure 1 LAN networking
Gateway
Network
Host A
Host B
Host C