Network Slowdowns?

Brian bri at sonicboom.org
Fri Oct 13 10:24:57 PDT 2006


Jamie wrote:
In <54438.66.195.169.42.1160751050.squirrel at xxxxxxxxxxxxxxxxxxxxxx>,
"Justin C. Sherrill" <justin at xxxxxxxxxxxxxxxxxx> mentions:
  
On Fri, October 13, 2006 5:32 am, Jamie wrote:

    
Someone suggested changing the duplex settings on the other side, I know
it's running full duplex on DragonFlyBSD, but.. I don't know how to even
find out linux side. I'll have to research that I guess.
      
ethtool eth0 (or eth1, or whatever it is)

or

mii-tool (no args)

ethtool will plop out a lot of data, while mii-tool is pretty terse, but
both will specify speed and duplex.
    
Much thanks!

Well.. I don't know if I should be too thankful.. was hoping they'd be 
set differently.

Apparently, they're both set to full duplex:

DragonflyBSD:

ifconfig xl0
xl0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500
        inet 192.168.1.17 netmask 0xffffff00 broadcast 192.168.1.255
        inet6 fe80::204:76ff:fe38:7274%xl0 prefixlen 64 scopeid 0x1 
        ether 00:04:76:38:72:74
        media: Ethernet 100baseTX <full-duplex>
        status: active

It doesn't say the speed, but can I assume 100baseTX means it's 100Mb/s ?

Linux:
root at pong# ethtool eth0
Settings for eth0:
        Supported ports: [ TP MII ]
        Supported link modes:   10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Supports auto-negotiation: Yes
        Advertised link modes:  10baseT/Half 10baseT/Full
                                100baseT/Half 100baseT/Full
        Advertised auto-negotiation: Yes
        Speed: 100Mb/s
        Duplex: Full
        Port: MII
        PHYAD: 24
        Transceiver: internal
        Auto-negotiation: on
        Current message level: 0x00000001 (1)
        Link detected: yes


Duplex: Full .. I assume that is full duplex, so that can't be it.

I'll try to get boot -v if I can, not quite sure how to go about doing that. 

I guess I've had fairly good luck with networking because on the whole, it
usually has just "worked" for me.
Jamie
  
I just joined the list yesterday, so I don't know if this was already 
covered.

Have you tried netstat commands to help?

netstat -rn to view routing table.
netstat -I intname 1 to view per second ether stats.
Brian





More information about the Users mailing list