Did anyone reset the counters on the router interface or reboot it? If so, MRTG/rrdtool will assume the counter wrapped back to zero and assume bytes were transferred up to the 32-bit barrier or up to the maximum speed of the interface (32-bits assuming SNMPv1 and MaxBytes is set in the MRTG config). You can get about 125Mbps off of SNMPv1/32-bit counters at 5 minute intervals, so a true wrap is unlikely.
-----Original Message----- From: [EMAIL PROTECTED] [mailto:[EMAIL PROTECTED] On Behalf Of Dracul Sent: Monday, April 21, 2008 03:46 To: [email protected] Subject: [c-nsp] ETH spikes Hi All, Anybody experienced sudden big spikes with their eth interfaces in their routers? WAN bandwidth is just 2MB but suddenly the MRTG graphs registered a 100MB bandwidth on the eth0 going to the Proxy server. although on the proxy server eth1 (going to customer network) everything is normal. network fluke or something? regards, chris _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/ _______________________________________________ cisco-nsp mailing list [email protected] https://puck.nether.net/mailman/listinfo/cisco-nsp archive at http://puck.nether.net/pipermail/cisco-nsp/
