IP SLA Monitoring with PRTG:
Keep the Line Open!

 

  • PRTG monitors the quality of your VoIP-connections
  • PRTG comes with special sensors for Cisco IP SLA monitoring at no extra charge
  • PRTG monitors quality of service without expensive hardware

 

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100 sensors, perfect for smaller networks


IP SLA monitoring:
Optimize the quality of service of VoIP and your network

 

Lost connections and poor sound quality during video conferences and customer calls are extremely annoying. Frequently, calls have been planned well in advance and are unable to be rescheduled on short notice. For the smooth functioning of voice over IP and video streaming, a stable flow of data packets is a must. With IP SLA monitoring, you’ll ensure a high quality of service. And by preventing malfunctions and verifying service level agreements, you’ll save time and money.

PRTG monitors quality of service (QoS) regardless of your hardware, and comes with special sensors at no extra cost. Expensive Cisco IOS routers are required for Cisco IP SLA monitoring which monitors a network’s various VoIP parameters. Even if you do not have IP SLA-compatible routers or switches, you can still keep an eye on the network quality between two random network nodes by using Paessler’s QoS sensors. To do so, all you need are two regular Windows computers. As a result, you’ll ensure the quality of your network connections without having to shell out exorbitant amounts for IP SLA-compatible hardware.

With PRTG, everyone will work with peace of mind.

Screenshots 
An introduction to IP SLA monitoring with PRTG

 
Cisco IP SLA Sensor

Data collected
by PRTG

 

The PRTG Network Monitor comes with a Cisco IP SLA sensor that monitors the following parameters:

  • ICPIF (Calculated Planning Impairment Factor): Predefined combinations of packet loss and packet delay for VoIP
  • MOS (Mean Opinion Score): Calculation of the subjectively perceived connection quality based on parameters such as jitter and packet loss
  • Packets which arrive in the wrong order
  • Packets which arrive too late
  • Average VoIP Jitter value (a kind of packet delay)
  • Average round-trip time (network latency time)
  • DNS RTT
  • TCP RTT
  • Transaction RTT
  • Packet loss

While QoS sensors and the IP SLA Sensor query similar data, QoS sensors also calculate MOS. With the IP SLA Sensor, this value is read directly by the Cisco device.

Steffen-Ille

 

“The greatest advantage of PRTG? You get to rest easy.“

Steffen Ille, Bauhaus-University of Weimar, Germany.

How IP SLA monitoring with PRTG works


VoIP connections are susceptible to even the most minor of problems. At the same time, it is extremely important that they comply with service level agreements (SLAs). If data packets do not arrive on time, get lost, or become mixed up, then the quality of the connection will drop dramatically. For optimal quality of service, jitter and packet delay variation (PDV) values should be as low as possible; packet losses, duplicate packets, and packets arriving in the wrong order must be avoided at all costs. The PRTG Network Monitor is VoIP monitoring software that uses a variety of sensors for QoS monitoring and for the presentation of these values: the QoS Sensor (one-way and round-trip), the SNMP Cisco CBQoS Sensor, and the IP SLA Sensor.

IP SLA Sensor: Cisco devices with the IP SLA feature gather various information about VoIP-related parameters, such as response time, latency time, jitter, packet loss, and packet delay. The most interesting values for VoIP are the mean opinion score (MOS) and ICPIF. The PRTG IP SLA Sensor monitors all these results. PRTG can be used as IP SLA monitoring software without extra add-ons or costs. In addition, the SNMP Cisco CBQoS Sensor lets you use Class-Based QoS when monitoring Cisco devices.

QoS sensors: When monitoring quality of service, PRTG deploys QoS sensors which verify the quality of a network connection between two end points. VoIP jitter, packet loss, packet delay, and other relevant values are measured. QoS sensors provide similar values to those gathered by IP SLA monitoring but are not limited to monitoring Cisco routers which include the IP SLA feature. PRTG is not just a LAN monitor: by using “remote probes,” you can even monitor quality of service via VPNs and WAN connections.

Configuring IP SLA monitoring

 


 


When configuring PRTG’s IP SLA monitoring, you’ll need to add the IP SLA-compatible Cisco device you wish to monitor to PRTG by indicating its network address. Be sure to enter the SNMP access data correctly, for PRTG uses SNMP to query the corresponding IP SLA data of target devices.



Next, create a new sensor on this device to represent your Cisco router or switch in PRTG: on the device, click on “Add Sensor” and enter “IP SLA” in the search field. Then add the “Cisco IP SLA” sensor, and on the following screen select the parameters you wish to monitor.



Within minutes, the current values will appear on your PRTG dashboard - Your IP SLA monitoring is up and running.

 

 
VoIP connection quality at a glance – 
even on the go

PRTG is installed in two short minutes. You get 100 free sensors, plenty for VoIP monitoring in small networks. Upgrade whenever you like.

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7 good reasons to choose PRTG as your IP SLA monitoring tool

Successful video conferences instead of lost connections

VoIP monitoring lets you optimize the stability and sound quality of video conferences. Save yourself the embarrassment of lost connections and horrible sound quality.

Custom notifications

Should parameters fall below or exceed your self-defined threshold values, PRTG will inform you immediately by email, SMS, or push notification – wherever you happen to be.

Automation for a lighter workload

It’s impossible to monitor the quality of all VoIP connections manually. With PRTG, you can sit back and relax knowing sensors are doing the work for you – and that you’ll be notified automatically if a problem arises.

Connection and bandwidth consumption optimization

PRTG will show you how applications and services use bandwidth, which in turn will enable you to develop specific solutions for all your business needs.

Verification of service level agreements

By monitoring VoIP and verifying quality of service, IT services will become an aspect of your company which employees can count on in their day-to-day work.

Special IP SLA sensors at no extra charge

Paessler charges no extra costs for the monitoring of IP SLA-compatible hardware. IP SLA is simply incorporated as another sensor type, and can therefore even be used as freeware.

Compatibility with all hardware

With QoS sensors, the quality of service of VoIP connections can be monitored even in the absence of Cisco devices.

Recommend PRTG

Over 95% of our customers recommend PRTG

Paessler AG worldwide trialled PRTG in over 600 IT departments. The aim was to tune the network monitoring software closer to the needs of the administrators.

The result of the survey: over 95% of the participants would recommend PRTG - or already had.

PRTG simplifies your day!

Let our IP SLA monitoring software run in the background. So you can concentrate on your day-to-day tasks with peace of mind.

PRTG saves time

With PRTG, you get one centralized IP SLA monitoring tool for all your hardware. You’ll enjoy a quick and complete overview at all times via our dashboard and app.

PRTG saves worry

Round-the-clock monitoring of the quality of service of your VoIP connections has never been easier. PRTG’s built-in alarm feature is quick to respond, before the system fails or employees complain.

PRTG saves money

80% of our customers report substantial or even exceptional cost savings in the area of syslog monitoring. The experience of our customers shows that the costs for licenses have paid for themselves in an average of 3 ½ months.

PRTG: The swiss army knife for sys admins

Adapt PRTG individually and dynamically to your needs relying on a strong API:

  • HTTP API: Access monitoring data and manipulate monitoring objects using HTTP requests
  • Custom Sensors: Create your own sensors for customized monitoring
  • Custom Notifications: Create your own notifications to send alarms to external systems
  • New REST API Sensor: Monitor almost everything that provides XML or JSON

Award winning solution

We work hard on making our software as powerful and easy-to-use
as possible for our customers each and every day.
Of course it makes us proud when we get awards for that.

 

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Paessler AG –
Engineering quality made in Germany

 

 

30 DAYS TRIAL
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100 Sensors, perfect for small networks

 

 

Made in Germany: The PRTG Network Monitoring Tool is the fruit of an engaged team. The company was founded by Dirk Paessler. PAESSLER AG's headquarters are located in the city of Nuremberg, in the heart of Germany. We combine typical German virtues such as high quality standards, industriousness, and commitment with international, cosmopolitan flair. Read more about our firm here. By the way: We are regularly looking for new recruits.

Case Studies: Airports, utility companies, banks, colleges, hospitals: PRTG is present in every industry. For each of our customers, business and organizational processes depend on the proper functioning of the network infrastructure. PRTG's customer satisfaction is close to 100%. Read in our case studies how our customers use PRTG.

Product tests: It goes without saying that we are convinced by the quality of PRTG. But what about the others? PRTG has always performed extremely well in tests. PRTG user "LanLine" sums it up best: "PRTG was already good several years ago, and has gotten better from version to version ever since." Such has been our steadfast and sincere goal. Read more about monitoring software product tests and comparisons here.

Support: Our support team works hard every day to help customers solve their monitoring problems. Our goal is to resolve all inquiries within 24 hours (on business days). We've drafted a comprehensive manual and built up an extensive knowledge base featuring videos, webinars, and FAQs. All support, of course, is also included!

Getting started is easy: The first 100 PRTG sensors are free, allowing you to evaluate our monitoring tool with no strings attached. For small companies, these 100 sensors are already enough for emergency monitoring. To upgrade, simply search for a suitable license. You can modify your license any time you like. 

 

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Network Monitoring Software for Windows - Version 17.3.33.2830 (September 11th, 2017)

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