Command Line Interface Reference Guide > The Configuration Menu > /cfg/l3/vrrp VRRP Configuration Menu
/cfg/l3/vrrp
VRRP Configuration Menu
Alteon Virtual Router Redundancy Protocol (VRRP) support provides redundancy between routers in a LAN. This is done by configuring the same virtual router IP address and ID number on each participating VRRP-capable routing device. One of the virtual routers is then elected as the primary based on a number of priority criteria, and assumes control of the shared virtual router IP address. If the primary fails, one of the backup virtual routers assumes routing authority and takes control of the virtual router IP address.
 
[Virtual Router Redundancy Protocol Menu]
vr - VRRP Virtual Router Menu
vrgroup - VRRP Virtual Router Vrgroup Menu
group - VRRP Virtual Router Group Menu
if - VRRP Interface Menu
track - VRRP Priority Tracking Menu
ospf - OSPF cost adjustment
autosmir - Periodically send session mirror request to VRRP primary
hotstan - Enable/disable hot-standby processing

ucast - Enable/disable unicast advertisement
on - Globally turn VRRP ON
off - Globally turn VRRP OFF
holdoff - Globally set VRRP hold off time
busytime - Set primary busy state timeout (seconds)
     srcmac - Set advertisement source MAC address mode
     usevrmac - Enable/disable usage of VRRP MAC instead of Interface MAC for VR owner
     srvPbkp - Enable/disable server processing on standby switch for Active-Standby
filtpbkp - Enable/disable filter processing on standby switch for Active-Standby
     fovdelay - Enable/disable the delay to process the traffic on ports during failover(hot-standby only)
cur - Display current VRRP configuration
Note: The IP address of a VRRP virtual interface router (VIR) and virtual server router (VSR) must be in the same IP subnet as the interface to which it is assigned.
By default, VRRP is disabled. Alteon has extended VRRP to also include virtual servers, allowing for full active-active redundancy over Layer 4. For more information on VRRP, see the High Availability chapter in the Alteon Command Line Interface Application Guide.
 
Virtual Router Redundancy Protocol Options (/cfg/l3/vrrp) 
Command Syntax and Usage
vr <virtual router number (1-1024)>
 
Displays the VRRP Virtual Router menu. To view this menu, see /cfg/l3/vrrp/vr <router number> Virtual Router Configuration Menu.
Default: enable
vrgroup <virtual router vrgroup number (1-16)>
 
Displays the VR Group menu. To view this menu, see /cfg/l3/vrrp/group Virtual Router Group Configuration.
Default: enable
group
 
Displays the VRRP Virtual Router Group menu, used to combine all virtual routers together as one logical entity. Group options must be configured when using two or more Alteons in a hot-standby failover configuration where only one Alteon is active at any given time. To view the menu, see /cfg/l3/vrrp/group Virtual Router Group Configuration.
if <interface number (1-256)>
 
Displays the VRRP Virtual Router Interface menu. To view this menu, see /cfg/l3/vrrp/if <interface number> VRRP Interface Configuration.
track
 
Displays the VRRP Tracking menu. This menu is used for weighting the criteria used when modifying priority levels in the primary router election process. To view this menu, see /cfg/l3/vrrp/track VRRP Tracking Configuration.
ospf <0 – 65535>
 
Configures the OSPF cost increment. To disable OSPF cost adjustment, when prompted, enter the new cost increment as 0.
Values: 0-65535
Default: 0
autosmir
Use this command to maintain sessions for a longer period, and to make sure that sessions on the backup are not deleted after max age is reached.
Automatically synchronizes the sessions from the primary to the backup at the configured time of day, for every configured period (daily, weekly, monthly).
When the backup receives a request to create a session mirror, it creates a session entry, and sets its age to the maximum age value.
If the backup does not receive a request to delete the session mirror, the session terminates after 21 to 45 days.
To disable autosmir, when prompted, set the date, month, and year to 0.
hotstan disable|enable
 
Enables or disables hot-standby processing, in which two or more Alteons provide redundancy for each other.
Default: disable
Note: When you enable hot-standby for a VR group, the currently set priority for the VR group is increased by 2.
ucast disable|enable
 
Specifies whether to enable unicast VRRP advertisements.
Default: disable
holdoff <0-255 seconds>
 
Sets the length of time, in seconds, that the VRRP virtual router waits before changing the state to the backup state or the primary state.
Default: 0
Note: Do not set a holdoff timer for a virtual interface IP address owner. Because an IP address owner always has a priority value of 255, setting a holdoff timer for an owner results in the same IP address for the owner and the current primary.
srcmac <vr|vm|vr-vm>
 
Available for Alteon VA only.
Changes the type of MAC address to enable Alteon to pass VRRP advertisement packets when working in certain environments or with certain hypervisors.
Values:
*vr — Primary Alteon advertisements use the VR MAC address.
*vm — Primary Alteon advertisements use the MAC address (the MAC address that the Alteon VA sets for the port).
*vr-vm — Primary Alteon advertisements use the VR MAC address when the VRID is less than or equal to 255, and the VM MAC address when the VRID is greater than 255.
Default: vr
usevrmac disabled|enabled
 
Enables or disables usage of the VRRP MAC address instead of the interface MAC address for the virtual router owner.
When enabled, a packet leaving Alteon has the VRRP MAC instead of the interface MAC address.
Relevant only for the virtual router owner.
Default: disabled
srvPbkp disable|enable
 
Enables or disables server processing on the standby Alteon for active-standby.
Note: This option is available only in the Command Line Interface and not in the Web Based Management interface.
fovdelay disable|enable
 
Specifies when to change the status of blocked ports during hot standby failover to avoid network loops.
Values:
*enable — The new primary Alteon changes the status of blocked ports to forwarding after the failover delay (approximately three times as long as the advertisement interval) and avoids a network loop. Health checks and services are delayed, and client traffic is not processed.
*disable — The new primary Alteon changes the status of blocked ports to forwarding after 100 milliseconds (after approximately 1024 milliseconds for IP version 6).
Default: disable
Note: This command is available only when the hotstan command is enabled.
cur
 
Displays the current VRRP parameters.