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RUT240 VRRP

Summary #

The Virtual Router Redundancy Protocol (VRRP) is a computer networking protocol used for automatic default gateway selection for clients on a LAN network in case the main router (Master) becomes unavailable. Another VRRP router (Backup) then assumes the role of Master; thus backing up the connection.

This page is an overview of the VRRP section of RUT240 routers.

The information in this page is updated in accordance with the RUT2XX_R_00.01.12 firmware version.

VRRP configuration #

The VRRP LAN configuration settings section is used to set the main settings of VRRP. Refer to the figure and table below for information on the fields contained in that section.

Networking rutxxx manual vrrp vrrp lan configuration settings v1.png
FieldValueDescription
Enableyes | no; default: noTurns VRRP on or off.
IP addressip; default: 192.168.1.253Virtual IP address for the router LAN’s VRRP cluster.
Virtual IDinteger [1..255]; default: 1The Virtual Router Identifier (VRID) is a field in the VRRP packet IP header used to identify the virtual router in the VRRP cluster. Routers with identical IDs will be grouped in the same VRRP cluster.
Priorityinteger [1..255]; default: 100VRRP priority of the virtual router. Higher values equal higher priority. The router with the highest priority is considered to be the Master router while other routers are Backup routers.sends periodic VRRP Advertisement messagesMaster router – the first hop router in the VRRP cluster (i.e., the router that provides connectivity to LAN devices by default).Backup router – assumes the role of Master router in case it becomes unavailable. If there multiple Backup routers in the VRRP cluster, the one with the highest priority will assume the role of Master.
Advertisement Intervalinteger [1..255]; default: 1Time interval in seconds between advertisements

Check Internet connection #

The Check Internet connection section is used to set the parameters that define how the router will determine whether the Internet connection is still available or not. This is done by periodically sending ICMP packets to a defined host and awaiting responses. If no response is received after a defined period of time, the connection is determined to be down, and thus the role of Master is assumed by another router in the network.

Refer to the figure and table below for information on the fields contained in the Check Internet connection section.

Networking rutxxx manual vrrp check internet connection v1.png
FieldValueDescription
Enableyes | no; default: noTurns Internet connection checking on or off.
Ping IP addressip | host; default: noneIP address or hostname to which the router will send ICMP packets. This is used to determine whether the Internet connection is still available or not. Therefore, it is recommended that you enter the address of remote host that is usually available (for example, 8.8.8.8).
Ping intervalinteger; default: 10Time interval (in seconds) between two Pings
Ping timeout (sec)integer [1..9999]; default: 1The maximum amount of time the router will wait for a response to a ping request. If it does not receive a response for the amount of time defined in this field, the ping request will be considered to have failed.
Ping packet sizeinteger [0..1000]; default: noneThe size (in bytes) of sent ICMP packets.
Ping retry countinteger [1..9999]; default: noneHow many times the router will retry sending ping requests before determining that the Internet connection has failed.

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