R2511-HP MSR Router Series High Availability Configuration Guide(V5)
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Configuration procedure
To create a VRRP group and configure a virtual IP address:
Ste
p
Command
Remarks
1. Enter system view.
system-view N/A
2. Enter the specified interface
view.
interface interface-type
interface-number
N/A
3. Create a VRRP group and
configure a virtual IP address
for the VRRP group.
vrrp vrid virtual-router-id virtual-ip
virtual-address
VRRP group is not created by
default.
NOTE:
The maximum number of VRRP groups on an interface is 16 and varies with device model and interface
cards. The maximum number of virtual IP addresses in a VRRP group is 16.
Configuring router priority, preemptive mode, and tracking
function
Configuration guidelines
• The running priority of an IP address owner is always 255 and you do not need to configure it. An
IP address owner always operates in preemptive mode.
• If you configure an interface to be tracked or a track entry to be monitored on a router that is the IP
address owner in a VRRP group, the configuration does not take effect. If the router is not the IP
address owner in the VRRP group later, the configuration takes effect.
• The tracked interface can be a Layer 3 Ethernet interface, a VLAN interface, a
synchronous/asynchronous serial interface, a POS interface, an MP-group interface, a dialer
interface, a BRI interface, or an HDLC link bundle interface. The Layer 2 protocol used by the
tracked synchronous/asynchronous serial interfaces can be PPP only, and the tracked
synchronous/asynchronous serial interfaces cannot be added to a virtual template or MP-group; the
dialer interface should function as the PPPoE client and operate in the permanent online mode; the
BRI interface should operate in dedicated line mode.
• If the state of a tracked interface changes from down or removed to up, the priority of the router
where the interface resides is automatically restored.
• If the state of a track entry changes from negative or invalid to positive, the priority of the router
where the track entry is configured is automatically restored.
Configuration prerequisites
Before you configure router priority, preemptive mode and tracking function, create a VRRP group on an
interface and configure a virtual IP address for it.
Configuration procedure
By configuring router priority, preemptive mode, interface tracking, or a track entry, you can determine
which router in the VRRP group serves as the master.
To configure router priority, preemptive mode and the tracking function: