I am in a discovery phase of trying to find out what is out there for Network Monitoring. Beside realtime and historical reportings I am also looking for something that can help in troubleshooting LAN/WAN related issues. For example: I have users reporting slowness at one of my remote sites and today I can see the traffic load on the WAN interface but I can't tell what type of traffic or who is taking up bandwidth.
Thanks in advance !!! I appreciate any inputs / suggestions !!
Based on your requirement NetFlow is the best option you have. Bandwidth monitoring can be done either wiuth SNMP, NetFlow or packet capture. Here, SNMP gives too basic information like traffic based on speed, volume and utilizartion. It cannot tell the hosts and applications used.
Packetcapture is very indepth but is not feasible as its time consuming and may increase overall network load because each of the traffic packet is analyzed.
The best option is NetFlow based analysis, provided your devices support NetFlow export. NetFlow will captue the traffic header information and can report on traffic stats with information on the applications using the bandwidth, source and destination of each conversation, hosts involved with an application bandwdith and even QoS values.
Check out ManageEngine's NetFlow Analyzer for NetFlow based analysis. To see the type of reports you can get, check the online demo from below:
The size and composition of your network are factors that need to be provided in making a recommendation. Can you tell us how many network nodes (routers and switches) there are?Are they all Cisco or multi-vendor?
Re the earlier suggestions about Netflow - yes, it can be very useful but is not supported on all Cisco platforms, even ones that may be WAN-facing.
Another factor is your comfort level at managing your toolset. For instance, do you expect to put the disc in and run the install script and do minimal administration? Or are you happy downloading open source toolsets onto a Linux box and tweaking html code to make it look the way you want?
Also, what is your intended audience or users? Yourself as a network admin, a larger team which may include operator (non-admin) type users, non-network engineers, and/or management?
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.