New Project and no SNMP

[alvaro]

Hi Folks,

Im working in a Company where SNMP is forbidden according to theirs policy, but, i need to do a link upgrade, to do that i need to know the traffic on the links.

Here is the problem: I just have access to switches and i just can do show interface status or show interface.

No SNMP.

Do you believe that I can generate graphics based on just that info ? if yes, can you someone give me a help on it ?

Thanks a lot.

Al.

[TheWitness]

SSH on Linux, plink on windows.

TheWitness

[Howie]

You could also look at Rancid - that will allow you to automate the logon to various network vendor's equipment to run commands and capture the output - it has a series of commands called things like 'clogin', 'hlogin' to do this. You can even give it a list of devices to batch up commands to. That way, someone else has already done the automation part.

Then it's a Small Matter Of Programming, to use awk/perl/php/whatever to parse that output into the format that a cacti script query needs.

[TheWitness]

I agree async is the bomb. If you can get the data closer to the database/poller, you will increase your capacity by three orders of magnitude at least. In other words, before, you might have been able to monitor hundreds of devices. By brining the source of the data async into the database, you can monitor tens of thousands of devices. At that point, your RRDfile capacity becomes the bottleneck.

TheWitness

[NealRauhauser]

Assuming you have a proper OS available, say FreeBSD, just install RANCID.

There is a command called clogin that can be used to automate logins to devices - you create a .cloginrc like this snippet below then the user who has this in their home directory can "clogin cat2924" and automagically connect.

add user cat2924 admin
add password cat2924 {admin_pass} {enable_pass}
add method cat2924 {telnet}

Once automagic connection is in place clogin -x script_file device_name > output. Have "show interface whatever" as the one line command in the script file and you'll be capturing the interface starts to the text file. Parse, insert into RRD, and away you go.

I got broket ol' Waveider stuff that has things via the shell that aren't exposed via SNMP and I do stuff like this all the time.