Cisco NetFlow captures header information from actual IP traffic passing through router interfaces and reports on traffic usage, applications used, souce and destination of traffic, port and protocol used, ToS, DSCP, next hop and so on. Using NetFlow you can see who is using your bandwidth, what application is being used, etc.
Cisco IPSLA is a feature from Cisco that lets you measure the performance of a link using simulated packets and reports on jitter, latency, packet loss, Round-Trip time, packet loss, link availability, etc.
In short, NetFlow is used for bandwidth monitoring and traffic analysis of actual IP traffic that is passing through a link and IPSLA is used to measure how a link will perform when traffic passes through it.
Cisco supports both features - NetFlow and IPSLA.
IPSLA needs Cisco devices with IPSLA support at the source and destination ends with atleast IOS 12.3(14)T
NetFlow is exported as UDP packets to a flow analyzer tool - many tools use 9996 or 2055 for NetFlow export
IPSLA requires routers with Cisco IPSLA capability and IPSLA stats is collected via SNMP.
There are tools in the market which can monitor both. We at ManageEngine have NetFlow Analyzer, which supports NetFlow and IPSLA in addition to many more monitoring technologies like Cisco NBAR, WAAS monitoring, Cisco Medianet, etc.
Cisco NBAR is a deep packet inspection technology which analyzes data packets to report on application usage. NBAR can detect applications hiding behind well know ports or using random ports and you can also further use NBAR to define your QoS polcies.
If you need to know more on the software that can monitor these technologies, you can contact ManageEngine NetFlow Analyzer support at netflowanalyzer-support 'at' manageengine. com
The message you have posted is just an alert which states that the threshhold set for RTT has been violated. You can edit the threshhold and set a higher value if needed from the tool you used for IPSLA monitoring.
By the way, if you were referring to ManageEngine NetFlow Analyzer, you can email
netflowanalyzer-support 'at' manageengine. com and product support can help.
Hi everyone, I would like to thank you in advance for any help you can provide a newcomer like myself!
Im studying the 100-105 book by Odom and am currently on the topic of Port security. I purchased a used 2960 and I'm trying to follow a...
While deploying a number of 18xx/2802/3802 model access points (APs), which run AP-COS as their operating platform. It can be observed on some occasions that while many of their access points were able to join the fabric WLC withou...
I am going to design and build an LAN network under a tunnel underground with long distance between the switches.
I will have 2 Catalyst switches and 8 Industrial IE3000, and they will be connected with fiber.
For now I am planning on use Layer-2 s...