Berkeley CSUA MOTD:Entry 24814
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2025/07/14 [General] UID:1000 Activity:popular
7/14    

2002/5/13-14 [Computer/Networking] UID:24814 Activity:high
5/13    Suppose I send something to localhost or the local name. Will the
        computer be smart enough to not route stuff on the interface card?
        I've noticed that I'm getting 92Mbps on FTP across my LAN, but
        a whopping 200Mbps using localhost name (I have a 100Mbps LAN). I'm
        wondering how that could happen.
        \_ Do the LEDs on your hub or the card actually blink?  I guess your
           monitor software is just not smart enough to connect to the right
           layer.
           \- normally lopback stuff doesnt hit the wire. however in
              freebsd if memory server, you can change something so that
              traffic for the locahost's ip does get put on the net.
              i dont have to to lookup details now but if you cant figure
              this out i might be able to help more later. --psb
           \_ Well the computer's in the lab (E450) so I can't check. I got
              the throughput using my home brewed network hogger. I've
              verified 1 process =~ 92Mbps, and 2 process =~ 89Mbps, etc...
                \_ why lower throughput with 2 processes? Broadcast conflict?
        \_ Normally yes - look at netstat -rn and notice that localhost has
           a special route that goes through the loopback device instead of
           your ethernet device and has a much higher MTU.
2025/07/14 [General] UID:1000 Activity:popular
7/14    

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