Reference Guide

648 | Object Tracking
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FTOS(conf)#track 100 interface gigabitethernet 7/1 line-protocol
FTOS(conf-track-100)#delay up 20
FTOS(conf-track-100)#description San Jose data center
FTOS(conf-track-100)#end
FTOS#show track 100
Track 100
Interface GigabitEthernet 7/1 line-protocol
Description: San Jose data center
Line protocol is Up
2 changes, last change 00:03:05
Tracked by:
Tracking a Layer 3 Interface
You can create an object that tracks the routing status of an IPv4 or IPv6 Layer 3 interface. You can track
the routing status of any of the following Layer 3 interfaces:
• 1-Gigabit Ethernet: Enter
gigabitethernet slot/port in the track interface interface command (refer to
Step 1 below).
• 10-Gigabit Ethernet: Enter
tengigabitethernet slot/port.
• Port channel: Enter
port-channel number, where valid port-channel numbers are:
• For the C-Series and S-Series, 1 to 128
• For the E-Series, 1 to 255 (TeraScale and ExaScale)
• SONET: Enter
sonet slot/port.
• VLAN: Enter
vlan vlan-id, where valid VLAN IDs are from 1 to 4094.
For an IPv4 interface, a routing object only tracks the UP/DOWN status of the specified IPv4 interface
(
track interface ip-routing command).
• The status of an IPv4 interface is UP only if the Layer 2 status of the interface is UP and the interface
has a valid IP address.
• The Layer 3 status of an IPv4 interface goes DOWN when its Layer 2 status goes down (for a Layer 3
VLAN, all VLAN ports must be down) or the IP address is removed from the routing table.
For an IPv6 interface, a routing object only tracks the UP/DOWN status of the specified IPv6 interface
(
track interface ipv6-routing command).
• The status of an IPv6 interface is UP only if the Layer 2 status of the interface is UP and the interface
has a valid IPv6 address.
• The Layer 3 status of an IPv6 interface goes DOWN when its Layer 2 status goes down (for a Layer 3
VLAN, all VLAN ports must be down) or the IPv6 address is removed from the routing table.
To configure object tracking on the routing status of a Layer 3 interface, use the following commands. To
remove object tracking on a Layer 3 IPv4/IPv6 interface, enter the
no track object-id command.