H3C Technologies H3C SecBlade LB Cards - Manual (Page 43)

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Single VRRP group configuration example at the CLI
Network requirements
• Host A needs to access Host B on the Internet, using 202.38.160.111/24 as its default gateway.
• LB A and LB B belong to VRRP group 1 with the virtual IP address of 202.38.160.111/24.
• If LB A operates properly, packets sent from Host A to Host B are forwarded by LB A. If LB A fails,
packets sent from Host A to Host B are forwarded by LB B.
Figure 21 Network diagram
Configuration procedure
1. Configure LB A:
system-view
[LBA] interface gigabitethernet0/1
[LBA-GigabitEthernet0/1] ip address 202.38.160.1 255.255.255.0
# Create VRRP group 1 and configure its virtual IP address as 202.38.160.111.
[LBA-GigabitEthernet0/1] vrrp vrid 1 virtual-ip 202.38.160.111
# Configure the priority of LB A in the VRRP group 1 as 110, which is higher than that of LB B (100),
so that LB A can become the master.
[LBA-GigabitEthernet0/1] vrrp vrid 1 priority 110
# Configure LB A to operate in preemptive mode so that it can become the master whenever it
works properly. Configure the preemption delay as five seconds to avoid frequent status
switchover.
[LBA-GigabitEthernet0/1] vrrp vrid 1 preempt-mode timer delay 5
2. Configure LB B:
system-view
[LBB] interface gigabitethernet0/1
[LBB-GigabitEthernet0/1] ip address 202.38.160.2 255.255.255.0
# Create VRRP group 1 and configure its virtual IP address as 202.38.160.111.
[LBB-GigabitEthernet0/1] vrrp vrid 1 virtual-ip 202.38.160.111
# Configure LB B to operate in preemptive mode, with the preemption delay set to five seconds.
[LBB-GigabitEthernet0/1] vrrp vrid 1 preempt-mode timer delay 5