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Date:      Mon, 24 Feb 2003 09:35:22 -0700
From:      "Wolfpaw - Dale Corse" <admin-lists@wolfpaw.net>
To:        <freebsd-bugs@freebsd.org>
Cc:        <freebsd-isp@freebsd.org>
Subject:   FW: Netstat byte counters, and IPFW (1 or 2) counters don't match
Message-ID:  <AJENJFOLCLAHHIIGCCHNMELOFIAA.admin-lists@wolfpaw.net>

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 Hi All,
 
  I tried posting this to freebsd-questions, but I have received no reply. So I thought I would try it as
  a bug (and the ISP list too :), as that is what it appears to be to me. I am not subscribed to this list,
  so if you could reply directly I would appreciate it :) Anyway .. here is the problem:

 I can't seem to find a reason for this.. but if I graph the values of fxp0 using netstat -bin, like this:
 
 Name  Mtu   Network       Address            Ipkts Ierrs     Ibytes    Opkts Oerrs     Obytes  Coll
 fxp0  1500  <Link#1>    00:02:b3:bc:12:7c  3417242     0  232992484  3997590     0  764014344     0
 
 and IPFW-2 rules like this (I also tried ipfw 1, and ipf):
 
 00100     388827   18466235 count ip from any to any in via fxp0
 00101     454678   80243192 count ip from any to any out via fxp0
 
 both with the same version of MRTG, the netstat version matches what my provider tells me I am using, but the
 one using ipfw values is always 50 - 200 kbits/sec off. Does anyone know why? I am stumped :( I have tried
 using both ipfw 1, and ipfw 2 (counting only layer 3, and only layer 2, and both types (which was way off) of
 packets).. and I have been unable to solve the problem :( The other odd thing being, it seems to be traffic that
 is maybe not IP based.. because the graph on the uplink of the Cisco switch behind the firewall in question does
 not see the traffic ethier.. but the Cisco 6509 in front of it sees it.. :/
 
 Please let me know if you have any ideas :)
 
 Thanks in advance :)
 Dale.
 --------------------------------
 Dale Corse
 System Administrator
 Wolfpaw Services Inc.
 http://www.wolfpaw.net
 (780) 474-4095 


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