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How to change the network speed
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How to change the network speed

1. Check the available network cards.

# lanscan
Hardware    Station        Crd Hdw   Net-Interface  NM  MAC       HP-DLPI DLPI
Path        Address        In# State NamePPA        ID  Type      Support Mjr#
0/1/2/0     0x00156004A2FA 0   UP    lan0 snap0     1   ETHER     Yes     119
0/1/2/1     0x00156004A2FB 1   UP    lan1 snap1     2   ETHER     Yes     119
0/4/1/0/6/0 0x0016353E5012 2   UP    lan2 snap2     3   ETHER     Yes     119

2. Check the associated lan driver to help determinate the appropiate network card configuration file.

# ioscan -fnkH 0/4/1/0/6/0
Class     I  H/W Path     Driver S/W State   H/W Type     Description
======================================================================
lan       2  0/4/1/0/6/0  igelan   CLAIMED     INTERFACE    HP A9784-60002 PCI/PCI-X 1000Base-T FC/GigE Combo Adapter

3. Check the card current speed.

# lanadmin -x 2

4. Modify the network speed on the fly from the command line.

# lanadmin -X 100FD 2

5. If you want to made the change permanently, modify the pertinent network card configuration file hp<driver_name>conf. You can reboot the system or restart the netd daemon.

Example:

# grep IGELAN /etc/rc.config.d/hpigelanconf.
# HP_IGELAN_INTERFACE_NAME   Name of interface (lan0, lan1...)
# HP_IGELAN_VMTU             Change the virtual maximum transmission unit.
#                            (HP_IGELAN_SEND_CKO) must be enabled for TCP
# HP_IGELAN_STATION_ADDRESS  Station address of interface
# HP_IGELAN_SPEED            Change the speed/duplexity for 1000Base-T cards
# HP_IGELAN_MTU              Change the size of maximum transmission unit.
# HP_IGELAN_FLOW_CONTROL     Enable or Disable the card's flow control
# HP_IGELAN_AUTONEG          Enable or Disable auto negotiation for 1000Base-SX
# HP_IGELAN_SEND_COAL_TICKS  Change the number of send coalesced ticks.
# HP_IGELAN_RECV_COAL_TICKS  Change the number of receive coalesced ticks.
# HP_IGELAN_SEND_MAX_BUFS    Change the number of send buffer descriptors
# HP_IGELAN_RECV_MAX_BUFS    Change the number of receive buffer descriptors
# HP_IGELAN_SEND_CKO        Enable/Disable hardware TCP/UDP (IPv4)
# HP_IGELAN_RECV_CKO        Enable/Disable hardware TCP/UDP (IPv4)
# HP_IGELAN_DIAG_THRESH     Set the inbound packet rate threshold
#  The HP_IGELAN_INIT_ARGS are reserved by HP.  They are NOT user changable.
HP_IGELAN_INIT_ARGS="HP_IGELAN_STATION_ADDRESS HP_IGELAN_SPEED HP_IGELAN_MTU HP_IGELAN_FLOW_CONTROL HP_IGELAN_AUTONEG
HP_IGELAN_SEND_COAL_TICKS HP_IGELAN_RECV_COAL_TICKS HP_IGELAN_SEND_MAX_BUFS HP_IGELAN_RECV_MAX_BUFS HP_IGELAN_VMTU"
HP_IGELAN_INTERFACE_NAME[0]=
HP_IGELAN_STATION_ADDRESS[0]=
HP_IGELAN_SPEED[0]=
HP_IGELAN_MTU[0]=100FD
HP_IGELAN_FLOW_CONTROL[0]=
HP_IGELAN_AUTONEG[0]=
HP_IGELAN_SEND_COAL_TICKS[0]=
HP_IGELAN_RECV_COAL_TICKS[0]=
HP_IGELAN_SEND_MAX_BUFS[0]=
HP_IGELAN_RECV_MAX_BUFS[0]=
HP_IGELAN_VMTU[0]=
HP_IGELAN_SEND_CKO[0]=
HP_IGELAN_RECV_CKO[0]=
HP_IGELAN_DIAG_THRESH[0]=

# /sbin/init.d/inetd start

Note:

  • Common network card configuartion files are: hpbase100, hpbtlanconf, hpgelanconf, hpigelanconf.
This page was last modified on 8 September 2009, at 14:06. This page has been accessed 1,317 times.