track

To enables Link Track or IP track feature, use the command track in Global Configuration Mode. The no form of the command resets the number of links tracked if number of links is configured or disables the IP track feature.

track

track { <group-index> } { {IPv4 } { address } { <IpAddress> } { | {interface } { {Extreme-Ethernet } { <0>/<1-28> } { | Gigabitethernet } { <0>/<1-28> } { | vlan } { <vlan_vfi_id>} } { | links } { <1-255>} }

no track

no track { <group-index> } { {IPv4 } { address } { <IpAddress> } { | {interface } { {Extreme-Ethernet } { <0>/<1-28> } { | Gigabitethernet } { <0>/<1-28> } { | vlan } { <vlan_vfi_id>} } { | links} }

Link-track and IP-track

In a Link-track, if uplink of the Master fails, the forwarding capability of the router will be affected. In this case, Link-track feature is used. When an uplink of Master VRRP router goes down, a trigger is given to decrement Master router's priority, and after that, election process begins. Thus, Backup becomes Master Router and forwarding capability is carried by Backup router.

If any one of the uplinks comes up, the Master will send VRRP advertisement with its original priority and becomes Master. For example, in the current scenario, the number of links tracked can be 2. This means, that the number of links tracked is 2, and when any two uplinks of the Master go down, then, a trigger will be sent to the Master. Then, the Master will send the VRRP advertisement with the decreased priority, which is configured in VRRP instance as decrement priority.

In IP-track, if the tracked destination fails, the forwarding capability will be affected. In case, IP-tracking feature is used. When tracked IP address of Master VRRP router goes down, a trigger is given to decrement Master router's priority, and after that, election process begins. Thus, Backup becomes Master Router and forwarding capability is carried by Backup router.

When the uplink on the Master router changes its status to online, the reverse process occurs. The previous Master router advertises with original Priority, and after election, the previous Master becomes Master again.

Parameters

Parameter	Type	Description
`ipiftype`		Enter to set IP interface type.
`IPv4`		Enter to enable IPv4 related configuration
`address`		Enter to set the IP address of the node to be pinged.
`<IpAddress>`		Enter a value to specify the IP address of the node to be pinged
`interface`		Enter for interface related configuration.
`Extreme-Ethernet`		Enter to enable extreme Ethernet interface. This is a version of Ethernet that supports data transfer up to 10 Gbits per second. This Ethernet supports only full duplex links.
`<0>/<1-28>`		Enter to set slot number/port number.
`Gigabitethernet`		Enter to enable Gigabit Ethernet interface. This is a version of LAN standard architecture that supports data transfer up to 1 Gigabit per second.
`vlan`	Integer	Enter for VLAN related configuration.
`<vlan_vfi_id>`		Enter a value for the range. the range for VLAN ID is from 1 to 4094 and from 4096 to 65535 for VFI.
`links`		Enter the number of links to be tracked for the VRRP instance. By default, the number of links tracked is All (i.e. when all three uplinks of the Master go down, the Master will send the VRRP advertisement with decreased priority).
`<1-255>`		Enter to set tracked links value.

Mode

Global Configuration Mode

Examples

iS5comm(config)# track 30 interface vlan 1