Configuring Vrrp - 3Com 8807 Configuration Manual

654 C 53: VRRP C
HAPTER

Configuring VRRP

ONFIGURATION
Figure 157 Network diagram for virtual router
Actual IP address10.100.10.2
Master
Virtual IP address10.100.10.1
10.100.10.7
Host 1
This virtual router has its own IP address: 10.100.10.1 (which can be the interface
address of a switch within the virtual router). The switches within the virtual router
have their own IP addresses (such as 10.100.10.2 for the Master switch and
10.100.10.3 for the Backup switch). The host on the LAN only knows the IP
address of this virtual router 10.100.10.1 (usually called as virtual IP address of
virtual router), but not the specific IP addresses 10.100.10.2 of the Master switch
and 10.100.10.3 of the Backup switch. They configure their own default routes as
the IP address of this virtual router: 10.100.10.1. Therefore, hosts within the
network will communicate with the external network through this virtual router. If
a Master switch in the virtual group breaks down, another Backup switch will
function as the new Master switch to continue serving the host with routing to
avoid interrupting the communication between the host and the external
networks.
The following sections describe the VRRP configuration tasks:
"Enabling/Disabling the Function to Ping the Virtual IP Address"
■
"Enabling/Disabling the Check of TTL Value of VRRP Packet"
■
"Setting Correspondence between Virtual IP Address and MAC Address"
■
"Adding/Deleting a Virtual IP Address"
■
"Configuring the Priority of Switches in the Virtual Router"
■
"Configuring Preemption and Delay for a Switch within a Virtual Router"
■
"Configuring Authentication Type and Authentication Key"
■
"Configuring Virtual Router Timer"
■
"Configuring Switch to Track a Specified Interface"
■
Network
Actual IP address10.100.10.3
Virtual IP address10.100.10.1
Ethernet
10.100.10.8
Host 2
Backup
10.100.10.9
Host 3