Chapter 3
Network Configuration
33
the device and its link partner. Attempting to link-up with autonegotiation disabled
requires knowledge of the current capabilities at which both the device and its link
partner are configured.
The structure of the
boot net
command line that includes device parameters is as
follows:
Where:
s =
1000, 100, 10, auto
d =
half, full, auto
c =
master, slave, auto
Note –
Refer to the IEEE 802.3 (G)MII register specification for the details on
autonegotiated and non-autonegotiated modes of operation. (This establishes the
link successfully so that traffic is transfered without collisions caused by duplex
mismatch between the local and remote devices both the local and remote link
capabilities must be matched.)
TABLE 3-1
depicts the device link parameters you can specify on the boot net
command line to establish a link between the local and remote device.
TABLE 3-2
shows the speed, duplex and
link-clock
capabilities at which a link-up will be
attempted:
ok boot
device-path
:speed=
s
,duplex=
d
,link-clock=
c
,promiscuous,
TABLE 3-1
Device Link Parameters
Device Parameters
Device Link Capability
speed
duplex
link-clock
autoneg
1000fdx
1000hdx
100fdx
100hdx
10fdx
10hdx
1000
full
master/slave
0
0
0
0
0
0
0
1000
half
master/slave
0
1
0
0
0
0
0
1000
full
auto
1
1
1
1
1
1
1
1000
half
auto
1
0
1
1
1
1
1
1000
auto
1
1
1
1
1
1
1
1000
1
1
1
1
1
1
1
1000
auto
1
1
1
1
1
1
1
100
full
N/A
0
0
0
1
0
0
100
half
N/A
0
0
0
0
1
0
Summary of Contents for GCS
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