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Monitoring Internet Service using IP SLA

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The ICMP Echo operation measures end-to-end response time between a Cisco router and any devices using IP. Response time is computed by measuring the time taken between sending an ICMP Echo request message to the destination and receiving an ICMP Echo reply.

In the figure below ping is used by the ICMP Echo operation to measure the response time between the source IP SLAs device and the destination IP device. Many customers use IP SLAs ICMP-based operations, in-house ping testing, or ping-based dedicated probes for response time measurements.

IP SLA - ICMP Echo

You will the full guide to configure IP SLA ICMP Echo operation in the following link http://goo.gl/N0ihtv

Here is a sample of IP SLA ICMP Echo operation on Cisco router

ip sla 10
icmp-echo www.google.com source-ip 192.168.99.2
frequency 30
tag Egypt Office to Google
exit
ip sla schedule 10 life forever start-time now
exit
Note:
Frequency = Number of seconds between the IP SLAs operations. The default is 60.

Then we will use one of the following OIDs to create Active and Performance Custom SNMP Monitor

    1. Object ID: 1.3.6.1.4.1.9.9.42.1.2.10.1.1
Label: iso.org.dod.internet.private.enterprises.cisco.ciscoMgmt.ciscoRttMonMIB.ciscoRttMonObjects.rttMonCtrl.rttMonLatestRttOperTable.rttMonLatestRttOperEntry.rttMonLatestRttOperCompletionTime
Type:  Gauge
Access:  Read Only
Description:  The completion time of the latest RTT operation successfully completed.
    1. Object ID: 1.3.6.1.4.1.9.9.42.1.2.10.1.2
Label: iso.org.dod.internet.private.enterprises.cisco.ciscoMgmt.ciscoRttMonMIB.ciscoRttMonObjects.rttMonCtrl.rttMonLatestRttOperTable.rttMonLatestRttOperEntry.rttMonLatestRttOperSense
Type: Enumeration
Access: Read Only
Description: A sense code for the completion status of the latest RTT operation.

I used the first OID (1.3.6.1.4.1.9.9.42.1.2.10.1.1) and the instance is 10. (instance = number of IP SLA operation/entry)

IPSLA1

The Result

IPSLA2

 

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