-----Original Message----- >From: Jim Bennett [mailto:[EMAIL PROTECTED] >Sent: Monday, November 03, 2003 12:03 PM >To: [EMAIL PROTECTED] >Subject: [mrtg] What is the IP of generating hosts? > > >Probably a dumb question, but I'll ask it anyway. > >What is the best/easiest way to determine the IP address of the host that is generating the traffic. > >On a Cisco 4000 switch, MRTG graph labels it as "#3/6 - sw0 xxxx xx". All the ports are label in this matter, and they go as high as "#3/48 - sw0 xxxx xx". >We have a Fluke Optiview and it labels the ports the same. But I have some reservation about the accuracy of locating the IP address using the Fluke. >It appears that the IP address that the Fluke has identified to that port does appeared to be the one that MRTG says the port is. >I know MRTG will identify the port as an IP address of 10.10.3.1_64. This means the 64th port on the switch. Right??? >But what physical port does that relate to on the switch? And what is the IP address of the host generating the traffic? > >Thanks for any help or insight in the matter. >Jim
Jim, I haven't found an easy way, but due to the fact that a switch is, for the most part, a layer 2 device it doesn't record IP addresses. On a Cisco 4000, as well as other Cisco switches with the CATOS image, you can do a 'show port 3/6' and it will show you the details of that port. For Example: Port Security Violation Shutdown-Time Age-Time Max-Addr Trap IfIndex ----- -------- --------- ------------- -------- -------- -------- ------- 3/6 disabled shutdown 0 0 1 disabled 64 The IfIndex field will be the same number that MRTG uses to identify ports. Then to get the IP address, on the switch type the command: show cam dynamic 3/6 this will show you the layer 2 (MAC) address in the format 00-e0-29-00-ae-12 of the device in port 3/6. Next from the router command line you can issue the command show arp | include 00e0:2900:ae12 and get the IP address that is associated with that MAC address. Then you can put the IP address in the Description field of the MRTG generated page... Hope that helps, Ken Jolkowski CONFIDENTIALITY NOTICE: This e-mail message, including any attachments, is for the sole use of the intended recipient's) and may contain confidential and privileged information. Any unauthorized review, use, disclosure or distribution is prohibited. If you are not the intended recipient, please contact the sender immediately by reply e-mail and destroy all copies of the original message. <<<<guavas>>>> -- Unsubscribe mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi -- Unsubscribe mailto:[EMAIL PROTECTED] Archive http://www.ee.ethz.ch/~slist/mrtg FAQ http://faq.mrtg.org Homepage http://www.mrtg.org WebAdmin http://www.ee.ethz.ch/~slist/lsg2.cgi
