<html>
<head>
<meta http-equiv="Content-Type" content="text/html; charset=us-ascii">
<meta name="Generator" content="Microsoft Exchange Server">
<!-- converted from rtf -->
<style><!-- .EmailQuote { margin-left: 1pt; padding-left: 4pt; border-left: #800000 2px solid; } --></style>
</head>
<body>
<font face="Arial, sans-serif" size="2">
<div><font color="#000080">Hi Steve,</font></div>
<div><font face="Times New Roman, serif" size="6" color="#000080"> </font></div>
<div><font color="#000080">Thanks for your response. We tried using the below mentioned procedure.</font></div>
<div><font face="Times New Roman, serif" size="6" color="#000080"> </font></div>
<div><font color="#000080">We are getting 2 values for bits per sec, </font></div>
<div><font color="#000080">one for <b>Incoming</b> packets, and the other on <b>outgoing</b> packets.</font></div>
<div><font face="Times New Roman, serif" size="6" color="#000080"> </font></div>
<div><font color="#000080">Is the one displayed in MRTG the sum of these 2 values?</font></div>
<div><font color="#000080">In other words, is bytes per sec displayed in MRTG = 8 * [(ifInOctetsVal2 – ifInOctetsVal1)/(T2-T1) + (ifOutOctetsVal2 – ifOutOctetsVal1)/(T2-T1)] ?</font></div>
<div><font face="Times New Roman, serif" size="6" color="#000080"> </font></div>
<div><font color="#000080">Pls. let us know.</font></div>
<div><font color="#000080"> </font></div>
<div><font color="#000080">Thanks,</font></div>
<div><font color="#000080">Prakash</font></div>
<div style="margin-top: 5pt; margin-bottom: 5pt; "><font face="Times New Roman, serif" size="6"><b>Re: [mrtg-developers] Method of retrieving Bits per sec (MRTG ref)</b></font></div>
<div style="margin-top: 5pt; margin-bottom: 5pt; "><font face="Times New Roman, serif" size="3">S Shipway<br>
Wed, 17 Mar 2010 13:54:09 -0700</font></div>
<div><font face="Courier New, monospace">MRTG obtains this data by reading the ifInOctets and ifOutOctets values in the </font></div>
<div><font face="Courier New, monospace">IF-MIB via SNMP at 5min intervals, calculating the difference (taking into </font></div>
<div><font face="Courier New, monospace">account possible counter wrap) and dividing by the time interval, then </font></div>
<div><font face="Courier New, monospace">multiplying by 8 to get bits/sec. This is in the standard MIB. If the </font></div>
<div><font face="Courier New, monospace">interface is a high-speed interface (>=100Mbps) and the device supports it, </font></div>
<div><font face="Courier New, monospace">then the MIB-2 isused instead and the h64bit counters ifHCInOctets and </font></div>
<div><font face="Courier New, monospace">ifHCOutOctets are used instead (to prevent counter wrap from causing problems).</font></div>
<div><font face="Courier New, monospace"> </font></div>
<div><font face="Courier New, monospace">Steve</font></div>
<div><font face="Courier New, monospace"> </font></div>
<div><font face="Courier New, monospace">From: Prakash Mariasusai [via MRTG Mailinglists] </font></div>
<div><font face="Courier New, monospace">[<a href="mailto:ml-node+4750489-553955619-68...@n2.nabble.com"><font color="#0000FF"><u>mailto:ml-node+4750489-553955619-68...@n2.nabble.com</u></font></a>]</font></div>
<div><font face="Courier New, monospace">Sent: Thursday, 18 March 2010 3:13 a.m.</font></div>
<div><font face="Courier New, monospace">To: Steve Shipway</font></div>
<div><font face="Courier New, monospace">Subject: Method of retrieving Bits per sec (MRTG ref)</font></div>
<div><font face="Courier New, monospace">Hi,</font></div>
<div><font face="Courier New, monospace">I am writing a small program to get the "Bits per sec" value</font></div>
<div><font face="Courier New, monospace">for a network interface in Unix systems (Solaris, Linux severs)</font></div>
<div><font face="Courier New, monospace">similar to the one provided by MRTG in the below link:</font></div>
<div><font face="Courier New, monospace"><a href="http://www.switch.ch/network/operation/statistics/geant2.html"><font color="#0000FF"><u>http://www.switch.ch/network/operation/statistics/geant2.html</u></font></a></font></div>
<div><font face="Courier New, monospace">I assume that MRTG does the same through SNMP.</font></div>
<div><font face="Courier New, monospace">I am new to SNMP and if someone can point me to the appropriate MIB/OID,</font></div>
<div><font face="Courier New, monospace">for doing the same, it would be very helpful.</font></div>
<div><font face="Courier New, monospace">Thanks in advance,</font></div>
<div><font face="Courier New, monospace">Prakash</font></div>
<div><font face="Courier New, monospace"> </font></div>
<div><font face="Courier New, monospace">-- </font></div>
<div><font face="Courier New, monospace">View this message in context: </font></div>
<div><font face="Courier New, monospace"><a href="http://n2.nabble.com/Method-of-retrieving-Bits-per-sec-MRTG-ref-tp4750489p4752968.html"><font color="#0000FF"><u>http://n2.nabble.com/Method-of-retrieving-Bits-per-sec-MRTG-ref-tp4750489p4752968</u></font></a></font></div>
<div><font face="Times New Roman, serif" size="3"> </font></div>
<div><font face="Times New Roman, serif" size="3"> </font></div>
</font>
</body>
</html>
<table><tr><td bgcolor=#ffffff><font color=#000000><pre>DISCLAIMER:
-----------------------------------------------------------------------------------------------------------------------
The contents of this e-mail and any attachment(s) are confidential and intended for the named recipient(s) only.
It shall not attach any liability on the originator or HCL or its affiliates. Any views or opinions presented in
this email are solely those of the author and may not necessarily reflect the opinions of HCL or its affiliates.
Any form of reproduction, dissemination, copying, disclosure, modification, distribution and / or publication of
this message without the prior written consent of the author of this e-mail is strictly prohibited. If you have
received this email in error please delete it and notify the sender immediately. Before opening any mail and
attachments please check them for viruses and defect.
-----------------------------------------------------------------------------------------------------------------------</pre></font></td></tr></table>