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Operating Systems AIX Trying to verify actual switchport speed Post 302467524 by landog on Friday 29th of October 2010 04:29:45 PM
Old 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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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
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