Dell S3100 Command Line Reference Guide for the Series 9.112.0P2 - Page 1096

Usage Information Use this command to create an object that tracks the reachability of an IPv4 route. In order for a route's reachability to be tracked, the route must appear as an entry in the routing table. A tracked IPv4 route is considered to match an entry in the routing table only if the exact IPv4 address and prefix length match a table entry. For example, when configured as a tracked route, 10.0.0.0/24 does not match the routing table entry 10.0.0.0/8. If no route-table entry has the exact IPv4 address and prefix length, the status of the tracked route is considered to be DOWN. When you configure IPv4 route reachability as a tracked object, the UP/DOWN state of the tracked route is also determined by the entry of the next-hop address in the ARP cache. A tracked route is considered to be reachable if there is an ARP cache entry for the route's next-hop address. If the next-hop address in the ARP cache ages out for a route tracked for its reachability, an attempt is made to regenerate the ARP cache entry to if the next-hop address appears before considering the route DOWN. Related Commands • show track - display information about tracked objects, including configuration, current state, and clients which track the object. • track ip route metric threshold - configure object tracking on the threshold of an IPv4 route metric. track resolution ip route Configure the protocol-specific resolution value used to scale an IPv4 route metric. Syntax track resolution ip route {isis resolution-value | ospf resolution-value} To return to the default setting, use the no track object-id command. Parameters object-id isis resolution-value ospf resolutionvalue Enter the ID number of the tracked object. The range is 1 to 500. Enter the resolution used to convert the metric in the routing table for ISIS routes to a scaled metric. Enter the resolution used to convert the metric in the routing table for OSPF routes to a scaled metric. Defaults Command Modes Command History None CONFIGURATION This guide is platform-specific. For command information about other platforms, see the relevant Dell Networking OS Command Line Reference Guide. Version 9.10(0.0) 9.8(2.0) 9.8(1.0) 9.8(0.0P5) 9.8(0.0P2) 9.7(0.0) Description Introduced on the S3148. Introduced on the S3100 series. Introduced on the Z9100-ON. Introduced on the S4048-ON. Introduced on the S3048-ON. Introduced on the S6000-ON. 1096 Object Tracking