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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 restart. If a DLC has been removed without a subsequent restart, it can be re-added.

Managing DLC Device Drivers Tasks
Task SMIT Fast Path Command or File Web-based System Manager Management Environment7
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 5L Version 5.1 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 might 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.
  7. These tasks are not available in Web-based System Manager Management Environment.


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