Dell C1048P Port Extender Networking Command-Line Reference Guide for the C900 - Page 1222

Usage Information Determine the UP/DOWN state of a tracked route by the threshold for the current value of the route metric in the routing table. To provide a common tracking interface for different clients, route metrics are scaled in the range 0 to 255, where 0 is connected and 255 is inaccessible. The scaled metric value communicated to a client always considers a lower value to have priority over a higher value. The resulting scaled value is compared against the configured threshold values to determine the state of a tracked route as follows: • If the scaled metric for a route entry is less than or equal to the UP threshold, the state of a route is UP. • If the scaled metric for a route is greater than or equal to the DOWN threshold or the route is not entered in the routing table, the state of a route is DOWN. Configure the UP and DOWN thresholds for each tracked route with the threshold metric command. The default UP threshold is 254; the default DOWN threshold is 255. The notification of a change in the state of a tracked object is sent when a metric value crosses a configured threshold. The tracking process uses a protocol-specific resolution value to convert the actual metric in the routing table to a scaled metric in the range 0 to 255. You can configure the resolution value used to scale route metrics for supported protocols with the track resolution ip route and track resolution ipv6 route commands. Related Commands • track ip route metric threshold - configures object tracking on the threshold of an IPv4 route metric. • track resolution ip route - configures the protocol-specific resolution value used to scale an IPv4 route metric. track interface ip routing Configure object tracking on the routing status of an IPv4 Layer 3 interface. C9000 Series Syntax track object-id interface interface ip routing To return to the default setting, use the no track object-id command. Parameters object-id interface Enter the ID number of the tracked object. The range is from 1 to 500. Enter one of the following values: • For a 1-Gigabit Ethernet interface, enter gigabitethernet and the slotnumber/ port-number. • For a Loopback interface, enter the keyword loopback then a number from 0 to 16383. • For a port channel interface, enter the keywords port-channel then a number. • For a 10-Gigabit Ethernet interface, enter tengigabitethernet and the slotnumber/ port-number. • For a VLAN interface, enter the keyword vlan then a number from 1 to 4094. Defaults none Object Tracking 1222