IOS for 4507R

Question

Hi
  I need to use:
track 1 ip sla 1 reachability
In my 4507R core switch.
Need to know which IOS should I use for this command as now I am using
cat4500-entservices-mz.122-46.SG.bin
In this when I am using
(config)#track 1 ip ?
  route  IP route
(no option of sla)

Answer 1

HI Majed,
Please find the requested info below:
track ip sla
To track the state of a Cisco IOS IP Service Level Agreements (SLAs) operation and to enter tracking configuration mode, use the track ip sla command in global configuration mode. To remove the tracking, use the no form of this command.
track object-number ip sla operation-number [state | reachability]
no track object-number ip sla operation-number [state | reachability]
Syntax Description
object-number
Object number representing the object to be tracked. The range is from 1 to 1000.
operation-number
Number used for the identification of the IP SLAs operation you are tracking.
state
(Optional) Tracks the operation return code.
reachability
(Optional) Tracks whether the route is reachable.
Command Default
IP SLAs tracking is disabled.
Command Modes
Global configuration (config)
Command History
Release
Modification
12.4(20)T
This command was introduced. This command replaces the track rtr command.
12.2(33)SXI1
This command was integrated into Cisco IOS Release 12.2(33)SXI1. This command replaces the track rtr command.
Cisco IOS XE Release 2.4
This command was integrated into Cisco IOS XE Release 2.4. This command replaces the track rtr command.
12.2(33)SRE
This command was integrated into Cisco IOS XE 12.2(33)SRE. This command replaces the track rtr command.
15.1(3)T
This command was modified. The valid range of the object-number argument increased to 1000.
15.1(1)S
This command was modified. The valid range for the object-number argument increased to 1000.
Usage Guidelines
Every IP SLAs operation maintains an operation return-code value. This return code is interpreted by the tracking process. The return code may return OK, OverThreshold, and several other return codes. Different operations may have different return-code values, so only values common to all operation types are used.
Two aspects of an IP SLAs operation can be tracked: state and reachability. The difference between these aspects relates to the acceptance of the OverThreshold return code. Table 79 shows the state and reachability aspects of IP SLAs operations that can be tracked.
Table 79     Comparison of State and Reachability Operations
Tracking
Return Code
Track State
State
OK
(all other return codes)
Up
Down
Reachability
OK or over threshold
(all other return codes)
Up
Down
As of Cisco IOS Release 15.1(3)T, a maximum of 1000 objects can be tracked. Although 1000 tracked objects can be configured, each tracked object uses CPU resources. The amount of available CPU resources on a router is dependent upon variables such as traffic load and how other protocols are configured and run. The ability to use 1000 tracked objects is dependent upon the available CPU. Testing should be conducted on site to ensure that the service works under the specific site traffic conditions.
Examples
The following example shows how to configure the tracking process to track the state of IP SLAs operation 2:
Router(config)# track 1 ip sla 2 state
The following example shows how to configure the tracking process to track the reachability of IP SLAs operation 3:
Router(config)# track 2 ip sla 3 reachability
Related Commands
Command
Description
track ip route
Tracks the state of an IP route and enters tracking configuration mode.
HTH
Regards
Inayath
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