You could graph the following OID: .1.3.6.1.4.1.9.9.87.1.5.1.0 .iso.org.dod.internet.private.enterprises.cisco.ciscoMgmt.ciscoC2900MIB.c290 0MIBObjects.c2900BandwidthUsage.c2900BandwidthUsageCurrent
Cisco's description: The current bandwidth consumed. The measurement unit is in megabits per second (1,000,000 bits/second). This value gives a reasonable estimate of the amount of traffic currently flowing through the switch. It is calculated as follows: Octets*8 + Frames*(96 + 64) --------------------------- Measurement Interval * 1,000,000 * 2 Where: Measurement Interval is the amount of time over which the Octets and Frames were collected, in seconds. Measurement Interval is always one second in current implementation. Octets is the total number of octets transmitted or received by all network interfaces, excluding framing data but including FCS. This includes octets in frames which were partially transmitted or received (due to collisions, for example). Frames is the total number of frames transmitted or received by all network interfaces, including frames with errors. The number of frames is multiplied by 96 plus 64 in order to estimate the delay between each frame for Ethernet's IPG and preamble/SFD. The '2' in the divisor makes this a forwarding bandwidth counter. A frame received on one interface is typically forwarded out another interface. In order to avoid double- counting this frame's bandwidth, once on the receiving interface and once on the transmitting interface, the total bandwidth is divided by two. Since multicast and broadcast frames can be sent to multiple ports, the above is at best a lower bound. Hope this helps. Jerry -----Original Message----- From: Jerry Hsieh [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 15, 2003 12:55 PM To: Jerry Hsieh; Mitchell, Warrick (CSC at Alcoa); mrtg Subject: [mrtg] Re: MRTG with Cisco 2900 series switch One more question, is there any way to sum up all the bandwidth (i.e. fa0/1~fa0/24). I couldn't find any howto/docs from the net. It would be helpful if anyone can give me some hint. Thanks for your time. Regards, Jerry -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Jerry Hsieh Sent: Tuesday, January 14, 2003 5:42 PM To: Mitchell, Warrick (CSC at Alcoa); mrtg Subject: [mrtg] Re: MRTG with Cisco 2900 series switch Hi Warrick, Thanks for the reply. I tried with the options but the configuration still commented out i.e. ### Interface 4 >> Descr: 'FastEthernet0/3' | Name: 'Fa0/3' | Ip: '' | Eth: '00-03-6b-95-63-83' ### ### The following interface is commented out because: ### * has a speed of 0 which makes no sense # # Target[192.168.0.130_4]: 4:[EMAIL PROTECTED]: # SetEnv[192.168.0.130_4]: MRTG_INT_IP="" MRTG_INT_DESCR="FastEthernet0/3" # MaxBytes[192.168.0.130_4]: 0 # Title[192.168.0.130_4]: Traffic Analysis for 4 -- ciscosw1 # PageTop[192.168.0.130_4]: <H1>Traffic Analysis for 4 -- ciscosw1</H1> # <TABLE> # <TR><TD>System:</TD> <TD>ciscosw1 in </TD></TR> # <TR><TD>Maintainer:</TD> <TD></TD></TR> # <TR><TD>Description:</TD><TD>FastEthernet0/3 </TD></TR> # <TR><TD>ifType:</TD> <TD>ethernetCsmacd (6)</TD></TR> # <TR><TD>ifName:</TD> <TD>Fa0/3</TD></TR> # <TR><TD>Max Speed:</TD> <TD>0.0 bits/s</TD></TR> The 2900 running-config is in the following: ... interface FastEthernet0/1 ! interface FastEthernet0/2 ! interface FastEthernet0/3 ! interface FastEthernet0/4 ! ...... Is there anything I need to do on the switch? Thanks again. Regards, Jerry Hsieh -----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] Behalf Of Mitchell, Warrick (CSC at Alcoa) Sent: Tuesday, January 14, 2003 5:22 PM To: 'Jerry Hsieh'; mrtg Subject: [mrtg] Re: MRTG with Cisco 2900 series switch Hi Jerry, If you run cfgmaker without any arguments, it will display it's help, in the help it has the following options to solve your problem: --no-down do not look at admin or opr status of interfaces --show-op-down show interfaces which are operatively down i.e. cfgmaker --show-op-down [EMAIL PROTECTED] Which will produce a config file which has all ports that are not administratively set to shutdown shown. If you want all ports regardless of their state, i.e. up, down, administratively down, use the --no-down option. Kind regards, Warrick Mitchell Network Engineer ALCOA World Alumina of Australia * Phone: 9316 5160 Fax: 9316 5228 * E-mail: <mailto:[EMAIL PROTECTED]> -----Original Message----- From: Jerry Hsieh [mailto:[EMAIL PROTECTED] Sent: Wednesday, January 15, 2003 09:15 To: mrtg Subject: [mrtg] MRTG with Cisco 2900 series switch Hi all, I am trying to use MRTG to monitor traffic on Cisco 2900 switches. When I run cfgmaker, the cfg file will comment out the ports are not activate(no system connected). Is there any way to enable this? Thanks for your time. Regards, Jerry Hsieh -- 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 -- 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 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. 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