Date: Mon, 21 Feb 2005 03:22:03 +0900 (JST) From: Tod McQuillin <devin@spamcop.net> To: freebsd-stable@freebsd.org Subject: Help me understand netstat output Message-ID: <20050221031739.G684@plexi.pun-pun.prv>
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On a 5.3-STABLE system (and actually for the past few years on FreeBSD 4.x and 5.x), 'netstat -in' has show numbers like this: Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll xl0 1500 <Link#1> 00:04:76:5f:45:1f 622543 0 621123 0 0 xl0 1500 192.168.7 192.168.7.28 622208 - 2110040 - - lo0 16384 <Link#3> 169 0 169 0 0 lo0 16384 127 127.0.0.1 169 - 169 - - wi0* 1500 <Link#4> 00:02:2d:29:28:7f 0 0 0 0 0 Why does the second line for xl0 show so many more outgoing packets than the first line? It seems to me the first line (Link#1) should count all packets at OSI layer 2, and the second should count layer 3 (IP) packets. I can see the layer 2 count being bigger than layer 3 count (lots of arp or other ether-only traffic) but not the other way around. Anyone know the explanation for this? -- Tod McQuillin
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