Qtech QSW-8200-52T-AC [11/36] Chapter 2 commands for ipv6 vrrpv3 configuration

User Manual

Chapter 2. Commands for IPv6 VRRPv3 Configuration 11

www.qtech.ru

Chapter 2 COMMANDS FOR IPV6 VRRPV3 CONFIGURATION

2.1 advertisement-interval

 Command: advertisement-interval <adver_interval>

 Function: Configure the advertisement interval of VRRPv3.

 Parameters: <adver_interval> is the interval of sending VRRPv3 advertisement

messages, in centiseconds, ranging from 100 to 1000, and has to be a multiple of 100.

 Command Mode: VRRPv3 Protocol Mode.

 Default: <adver_interval> is 100 centiseconds (1 second) by default.

 Usage Guide: The Master in a VRRPv3 backup group will send a VRRPv3 message to

notify other routers (layer-three switches) in the group that it is working normally at

intervals. This interval is adver_interval. If the Backup hasn’t received any VRRPv3

message from Master over a certain period of time (the length of the time is

master_down_interval), it will assume that the master is not working normally and will

change the state of itself to Master.

 Uses can use this command to adjust the interval of VRRPv3 advertisement messages

sent by Master. For the members in the same backup group, this attribute should have

same value. For Backup, the value of its master_down_interval should be three times

more than adver_interval. If the network flow is too big or different routers (or layer-

three switches) have different timers, master_down_interval might has a time-out,

which will cause a state change as a result. This kind of situation can be solved by

prolonging adver_interval or setting a longer preempts delay time.

 Example: Configure the VRRPv3 advertisement interval as 300 centiseconds.

 Switch(config-router)# advertisement-interval 300

2.2 circuit-failover

 Commands: circuit-failover {vlan<ID>| IFNAME} <value_reduced>

 no circuit-failover

 Function: Configures the VRRPv3 monitor interface.

 Parameters: {vlan<ID>| IFNAME} is the name for the interface to be monitored.

o <value_reduced> stands for the amount of priority decreased, the range value is

from 1 to 253.

 Command mode: VRRPv3 Protocol Configuration Mode.

 Default: Not configured by default.

 Usage Guide: The interface monitor function is a valuable extension to backup function,

which not only enable VRRPV3 to provide backup function on router (or L3 Ethernet

switch) fail, but also allow decreasing the priority of a router (or L3 Ethernet switch) to

ensure smooth implementation of backup function when status of that network

interface is down.