10-29-2010
Trying to verify actual switchport speed
Connecting network adapter from 100MB switchport to a 1GB switchport.
Trying to verify actual switchport speed.
While connected to 100MB switchport
lsattr -R -l ent0 -a media_speed shows:
10_Half_Duplex
10_Full_Duplex
100_Half_Duplex
100_Full_Duplex
1000_Full_Duplex
Auto_Negotiation
lsattr -EH -l ent0 -a media_speed shows:
attribute value description user_settable
media_speed 100_Full_Duplex Media speed True
netstat-v shows (among other things):
Link Status : Up
Media Speed Selected: 100 Mbps Full Duplex
Media Speed Running: 100 Mbps Full Duplex
After connecting to 1GB switchport.
Regain "ping" in seconds.
chdev -P -l ent0 -a media_speed=1000_Full_Duplex
ent0 changed
lsattr -EH -l ent0 -a media_speed
attribute value description user_settable
media_speed 1000_Full_Duplex Media speed True
However:
netstat-v shows (among other things):
Link Status : Up
Media Speed Selected: 100 Mbps Full Duplex
Media Speed Running: 100 Mbps Full Duplex
What speed am I actually connected at??
Thanks,
-dog
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LEARN ABOUT FREEBSD
if_txp
TXP(4) BSD Kernel Interfaces Manual TXP(4)
NAME
txp -- 3Com 3XP Typhoon/Sidewinder (3CR990) Ethernet interface
SYNOPSIS
To compile this driver into the kernel, place the following line in your kernel configuration file:
device txp
Alternatively, to load the driver as a module at boot time, place the following line in loader.conf(5):
if_txp_load="YES"
DESCRIPTION
The txp interface provides access to the 10Mb/s and 100Mb/s Ethernet networks via the 3Com Typhoon/Sidewinder chipset.
Basic Ethernet functions are provided as well as support for vlan(4) tag removal and insertion assistance, receive ip(4), tcp(4), and udp(4)
checksum offloading, and transmit ip(4) checksum offloading. There is currently no support for transmit tcp(4) or udp(4) checksum offload-
ing, tcp(4) segmentation, nor ipsec(4) acceleration.
When a txp interface is brought up, by default, it will attempt to auto-negotiate the link speed and duplex mode. The speeds, in order of
attempt, are: 100Mb/s Full Duplex, 100Mb/s Half Duplex, 10 Mb/s Full Duplex, and 10 Mb/s Half Duplex.
The txp supports several media types, which are selected via the ifconfig(8) command. The supported media types are:
media autoselect
Attempt to autoselect the media type (default)
media 100baseTX mediaopt full-duplex
Use 100baseTX, full duplex
media 100baseTX [mediaopt half-duplex]
Use 100baseTX, half duplex
media 10baseT mediaopt full-duplex
Use 10baseT, full duplex
media 10baseT [mediaopt half-duplex]
Use 10baseT, half duplex
HARDWARE
The txp driver supports the following cards:
o 3Com 3CR990-TX-95
o 3Com 3CR990-TX-97
o 3Com 3cR990B-TXM
o 3Com 3CR990SVR95
o 3Com 3CR990SVR97
o 3Com 3cR990B-SRV
SEE ALSO
altq(4), arp(4), inet(4), intro(4), ip(4), miibus(4), tcp(4), udp(4), vlan(4), ifconfig(8)
HISTORY
The txp driver first appeared in OpenBSD 2.9.
BSD
January 26, 2012 BSD