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System Management Guide: Communications and Networks

Managing DLC Device Drivers

A DLC must be added to the system prior to use. Each installed DLC is automatically added after installation and at each system reboot. If a DLC has been removed without a subsequent reboot, it may be re-added.

Managing DLC Device Drivers Tasks
Web-based System Manager:    wsm devices fast path
(Devices application)

-OR-
Task SMIT Fast Path Command or File
Add an Installed DLC Choose one (by device driver name):
smit cmddlc_sdlc
smit cmddlc_token
smit cmddlc_qllc
smit cmddlc_ether1
smit cmddlc_fddi
then select Add
mkdev2
Change DLC Attributes3,4 Choose one (by device driver name):
smit cmddlc_sdlc_ls
smit cmddlc_token_ls
smit cmddlc_qllc_ls
smit cmddlc_ether_ls1
smit cmddlc_fddi_ls
chdev2
Start DLC Local Area Network Monitor Trace5 smit trace trace -j nnn where the value nnn is the hook ID to be traced
Stop DLC Local Area Network Monitor Trace smit trcstop trcstop2
Generate DLC Local Area Network Monitor Trace Report smit trcrpt trcrpt -d nnn where the value nnn is the hook ID to be reported
List Current DLC Information3 Choose one (by device driver name):
smit cmddlc_sdlc_ls
smit cmddlc_token_ls
smit cmddlc_qllc_ls
smit cmddlc_ether_ls1
smit cmddlc_fddi_ls
lsdev2 or lsattr2
Remove a DLC3,6 Choose one (by device driver name):
smit cmddlc_sdlc_rm
smit cmddlc_token_rm
smit cmddlc_qllc_rm
smit cmddlc_ether_rm1
smit cmddlc_fddi_rm
rmdev2
Notes:
  1. The SMIT fast path for an Ethernet device manager includes both Standard Ethernet and IEEE 802.3 Ethernet device managers.
  2. Details about command line options are provided in the command descriptions for mkdev, chdev, trace, trcstop, trcrpt, lsdev, lsattr, or rmdev in AIX Commands Reference.
  3. A DLC must be installed and added before you can list, show, change, or remove its attributes. An attribute change is only successful if there are no active opens against the target DLC. Before issuing the change action, the user may have to stop services such as SNA, OSI, or NetBIOS from using the DLC.
  4. Changing the receive-queue size directly affects system resources. Make this change only if the DLC is having receive-queue problems, such as sluggish performance or overflows between the DLC and its device handler.
  5. Exercise caution when enabling the monitor trace since it directly affects the performance of the DLCs and their associates.
  6. Removing a DLC is only successful if there are no active opens against the target DLC. Before issuing the remove action, the user may have to stop services such as SNA, OSI, or NetBIOS from using the DLC.

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