IP-SLA - LOSS/LATENCY/JITTER - MONITOR LAB

CONDITION 

Question raise for performance monitoring for Path so that we can mitigate those problems using the help of IP SLA 

What is IP SLA ?

Cisco IOS IP SLAs send simulated data across the network and measures performance between multiple network locations or across multiple network paths. 

The information collected includes data about:

•  response time
• one-way latency
• jitter (interpacket delay variance)
• packet loss
• voice quality scoring
• network resource availability
• application performance
• server response time

IP SLA, feature of Cisco IOS software allows you to configure a router to send synthetic traffic to:

•  A host computer 
•  Router that has been configured to respond (Responder) 

IOS IP SLAs measurements perform active monitoring by generating and analyzing traffic to measure performance: 

•  Between Cisco IOS Software devices
•  Between a Cisco IOS device and a host

Each of these is a different type of IP SLA operation

With the IP SLAs feature enabled, a router sends synthetic traffic to the other device 

IP SLAs responder is a component embedded in the destination Cisco device that allows the system to anticipate and respond to IP SLAs request packets.

The responder provides accurate measurements without the need for dedicated probes. 

Only a Cisco IOS device can be a source for a destination IP SLAs Responder 

IP SLAs Operation with Responder 

Now Lets check with IP SLA Operation using LAB 

STEP 1 - First Configured the Router 2 as IP SLA Responder 

STEP 2 - Now we configure the IP SLA Source for sending traffic to responder 

IP SLA Type - SELECT 

                        

 TYPE - JITTER 

Destination-IP-Address - Router 2 loopback 

Destination Port - UDP - 16384

Codec g711alaw 

Configuration for IP SLA Monitor 

Use the frequency seconds command to set the rate at which a specified IP SLAs operation repeats. 

• The seconds parameter is the number of seconds between the IP SLAs operations , Default is 60 seconds 

Use the optional timeout milliseconds command to set the amount of time a Cisco IOS IP SLAs operation waits for a response from its request packet. 

• It is recommended be based on the sum of both the maximum RTT value for the packets and the processing time of the IP SLAs operation

Now lets validate the IP SLA results 

RESULTS 

- RTT 

- LATENCY 

- JITTER

- PACKET LOSS