Cisco Systems 3560 사용자 설명서

  Latest operation return code: over threshold

  Latest RTT (millisecs) 4

  Tracked by:

    HSRP Ethernet0/1 3

This example output shows whether a route is reachable:

Switch(config)# track 3 500 reachability

Switch(config)# end

Switch# show track 3

Track 3

  Response Time Reporter 1 reachability

  Reachability is Up

    1 change, last change 00:00:47

  Latest operation return code: over threshold

  Latest RTT (millisecs) 4

  Tracked by:

    HSRP Ethernet0/1 3

Switches that are running the IP services image with Cisco IOS release 12.2(46)SE or later support 
enhanced object tracking static routing. Static routing support using enhanced object tracking provides 
the ability for the switch to use ICMP pings to identify when a preconfigured static route or a DHCP 
route goes down. When tracking is enabled, the system tracks the state of the route and informs the client 
when that state changes. Static route object tracking uses Cisco IP SLAs to generate ICMP pings to 
monitor the state of the connection to the primary gateway. 

For more information about Cisco IP SLAs support on the switch, see 

For more information about static route object tracking, see this URL:

You use this process to configure static route object tracking:

Configure a primary interface for static routing or for DHCP.

Configure an IP SLAs agent to ping an IP address using a primary interface and a track object to monitor 
the state of the agent.

Configure a default static default route using a secondary interface. This route is used only if the primary 
route is removed.

Beginning in privileged EXEC mode, follow these steps to configure a primary interface for static 
routing:

Enter global configuration mode.

interface interface-id 

Select a primary or secondary interface and enter interface 
configuration mode.