> I have adopted a RRD tool with mrtg. > But, i notice that i can't see actual utilization > when the utilization of link is over about 120Mbps. > > We use the Cisco router with high bandwidth link, > 155Mbps ATM, FastEtherChannel, etc. > > In my opinion, the problems are our router which uses > the 32bit counter. > Therefore, i have modified some code of mrtg and > decreases the interval to 1 minute. > It' looks fine. However, this is not the solutions because of > 32bit counter. > Actually it can be. RRDtool does not suffer from counter wraps (as opposed to MRTG) provided the counter only wraps once. This means that in your case the maximum increase can be 2^32-1 octets per minute and therefore the maximum rate can be 572,662,306 bps ( (2^32-1)*8/60 )
If you write your own front end, it may be wise to use 64-bit counters whenever possible. Regards, -- __________________________________________________________________ / [EMAIL PROTECTED] [EMAIL PROTECTED] \ | work private | | My employer is capable of speaking therefore I speak only for myself | +----------------------------------------------------------------------+ -- * To unsubscribe from the rrd-developers mailing list, send a message with the subject: unsubscribe to [EMAIL PROTECTED]
