Dear Respected Friends,
We are really stuck, we need to create MRTG graphs from ET/BWMGR. Please assist urgently. http://www.etinc.com/index.php?page=bandwidth-manager-manual-v41.htm#snmp SNMP and MRTG with ET/BWMGR The -stats function described above is the most efficient way to gather statistical information for a rule, but the information cannot be exported to be read by an SNMP manager such as MRTG. In order to be able to export the statistical info to an SNMP gathering device, you must create an interface associated with the rule that can be read by SNMP. To create a statistical interface, use the "-statsdevice devname" syntax (or add a stats device in the GUI). The interface name must be 8 characters or less and end with a number. Suppose that you have a customer named General Dynamics and their IP address is 178.35.1.8. You could create a statistical interface with the following: bwmgr em0 -addr 178.35.1.8 -statsdevice gendyn0 This would create the interface gendyn0 and store all of the traffic information for this IP address crossing em0 into this interface. You could then track/chart gendyn0 with an SNMP package such as MRTG. Notes on SNMP Note that SNMP only reports interfaces that exist at the time that the SNMP daemon is first run. This implies that interfaces created with the bwmgr function must either be created BEFORE running snmpd or that you much kill and restart SNMP after creating interfaces. Also note that sending a HUP signal to SNMP does NOT cause it to recognize new interfaces. Note that the ET/BWMGR only counts actual IP data (including the IP headers) for its statistics. Ethernet interfaces include the ethernet header (14 bytes). While this is arguably correct for determining bandwidth used on the LAN itself, the ethernet header is not tranmitted by a router so it should not be included in router or internet related statistics. This discrepency may be noticable when using MRTG to map both physical interface statistics and also interface-specific statistics reported by ET/BWMGR. The numbers for ET/BWMGR will be lower because they do not include the hardware header counts. Viewing Bandwidth Statistics You can alternatively view stats on the interface with the CLI using the following syntax: bwmgr em0 stats [rule] where rule is an optional parameter which can be either the rule name or number. Changing the Statistical Period You can change the statistical period described above with the following command: bwmgr setperiod value where value is the new period. So, to set the period to 1 minute, you would use the following: bwmgr setperiod 60 Note that the statistical period is the same as the burst period, so if you are using bursting its likely that its more important to use a period to conform to your bursting requirements than statistical viewing. Mohamed Sangey NOC Technical Engineer logo Support : (+255) 0653-635212 / 0754-986875 Mobile : (+255) 653 - 270002 Chatting: Skype - mohamedsangey MSN - [email protected] Yahoo - [email protected]
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