Hi,
I would like to request information about docsis-user traffic measurement.
I want to measure the traffic to all users every day. (incoming and outgoing)
For the time being i not yet necessary any extra information, enough only the amount of the network traffic for each customer.
We have some Cisco CMTS and a few thousand customers.
I think the traditional way is the SNMP all cable modem counters midnight every days, and store this to the database.
But a few days ago i read about the Cisco NetFlow protocol, which is much more versatile, however need a lot of disk space.
My question is: Anyone has any experience with netflow-nfdump-nfsen traffic management tools in docsis environment?
Or stay at the SNMP?
Welcome,
szpal
http://appliedbroadband.com/wp-content/uploads/2013/01/abb-wp-d3-ipdr-br...
I think this protocol is similar to the NetFlow, but there is little documentation about it.
SNMP - I wouldn't trust it. Gives you no detail.
Netflow - works well for IPv4. Cisco haven't added the IPv6 support yet (annoying because it has been available on many other Cisco platforms for ages). Plenty of open source software you can use. Gives you a LOT of detail. Allows you to easily "unmeter" certain servers / applications if you want. Yes the flow files can be fairly large, but nothing stopping you from parsing these and aggregating the data for storage into your billing system. Keep the original flows for a while if you like as a backup. Keeping the flow files can possibly be the source of some privacy issues though.
IPDR - works for IPv4 and IPv6. Very small amount of open source software available. Active Broadband Networks make a popular commercial collector. Gives you aggregate level detail. Raw files are thus smaller than netflow. Cant easily unmeter traffic.
-> Netflow
I use ntop. Not for the faint of heart, but works well once you learn its strengths and weaknesses...with simplicity NOT being one of its strengths!
Open source Linux and there's also an older Win32 version (which is actually more stable than the latest Linux version I'm running).
http://www.ntop.org