Table B-2 Read-Only Parameters Defining The Current Status; Table B-3 Read-Write Interpacket Gap Parameter Values And Descriptions; Interpacket Gap Parameters - Sun Microsystems 3U Installation And User Manual

Parameters that Define the Current Status
The read-only parameters described in
interface. The following parameters display the current status of an interface.
TABLE B-2
Parameter
link_status
link_speed
link_mode

Interpacket Gap Parameters

The adapter's PCI fast ethernet and expansion (PFEX) ASIC supports programmable
Interpacket Gap (IPG) parameters ipg1 and ipg2. The total IPG is the sum of ipg1
and ipg2. The total IPG is 9.6 microseconds when the link speed set by the
autonegotiation protocol is 10 Mbps. When the link speed is 100 Mbps, the total IPG
is 0.96 microseconds.
TABLE B-3
and ipg2.
TABLE B-3
Parameter
ipg1
ipg2
By default, the driver sets ipg1 to 8-byte time and ipg2 to 4-byte time, which are
the standard values. (Byte time is the time it takes to transmit one byte on the link,
with a link speed of either 100 Mbps or 10 Mbps.)
34 Sun Quad FastEthernet 3U CompactPCI Adapter Installation and User Guide • December 2000
Read-Only Parameters Defining the Current Status
Description
Current link status.
0 = Link down
1 = Link up
Current link speed (valid only if the link is up).
0 = 10 Mbps
1 = 100 Mbps
Current link mode (valid only if the link is up).
0 = Half duplex
1 = Full duplex
lists the default values and allowable values for the IPG parameters ipg1
Read-Write Interpacket Gap Parameter Values and Descriptions
Values
(Byte-time)
0 to 255
0 to 255
explain the operational mode of the
TABLE B-2
Description
ipg1 = 8 (default at initialization)
ipg2 = 4 (default at initialization)