nanog mailing list archives

Re: Usage Graphing per Subnet


From: Methsri Wickramarathna <mmethw2003 () gmail com>
Date: Wed, 18 Feb 2015 08:40:27 +0530

Karsten , thanks for replying....
It's like this I don't want to take router info, only thing i want is to
graph the usage of my entire IP block per subnet wise.
Normaly we are using CACTI , MRTG , Observium etc... to gather router
information such as CPU , errors , usage etc...

All the systems mentioned above use SNMP to gather info and when it comes
to usage it only poll to a particular interface and plot the usage ......I
hope you had an idea about my requirement :)


On Tue, Feb 17, 2015 at 11:53 PM, Karsten Thomann <karsten_thomann () linfre de
wrote:

Hi,

in this case I fully agree with Armin's advice, only wanted to provide a
possible way to archive an easy result without activation of netflow/sflow
which is possible if all subnets had dedicated ports somewhere in the net.

I don't know what information you want to get from your routers, as there
are
many ways to get a result depending on the information you want and the
used
vendors.

Regards
Karsten

Am Dienstag, 17. Februar 2015, 22:01:18 schrieb Methsri Wickramarathna:
Thanks Armin ,
I will try the SW you have mentioned seems like it's not easy to install
though :) :)

Karsten,
I just bought out an example... my company has 2X18's and out of it we
are
using considerable amount of /24s to access internet . Some subnets are
given without proper documentation , so it's very hard to do what you
have
proposed.
What I can do is to install some kind of SW and gather info from my
gateway
routers :( .....it's helpful if some one can guide me through this :) ...

On Tue, Feb 17, 2015 at 5:34 PM, Karsten Thomann <
karsten_thomann () linfre de>
wrote:
Hi,

I'm not sure how it is exactly build, but if every /29 uses it's own
port
a tool like cacti/graphite where you're aggregating all required ports
within one graph is easier.

Regards
Karsten

Am 17.02.2015 12:47, schrieb Armin Kneip:
 Hi,

pmacct is your friend!

http://www.pmacct.net/


Regards,
Armin

Am 17.02.2015 um 12:35 schrieb Methsri Wickramarathna:
Hi All, I have a requirement to plot a usage graph per subnet. As an
example.

I have a 192.168.1.0/24 subnet divided among 32 customers where
each one
will get a /29 [ 192.168.1.0/29 => Customer A ; 192.168.1.8/29 =>
Customer
B etc... ] ...

Is there any tool to graph the usage of entire /24 subnet ???




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