To obtain information about datalink properties, you can use either of the following commands:
dladm show-linkprop –p property datalink
dladm show-ether datalink
To display a complete list of datalink properties, type the command without specifying a property, as shown in the following example:
# dladm show-linkprop net1
LINK PROPERTY PERM VALUE EFFECTIVE DEFAULT POSSIBLE
net1 speed r- 0 0 0 --
net1 autopush rw -- -- -- --
net1 zone rw -- -- -- --
net1 duplex r- unknown unknown unknown half,full
net1 state r- up up up up,down
net1 adv_autoneg_cap -- -- -- 0 1,0
net1 mtu rw 1500 1500 1500 1500
net1 flowctrl -- -- -- no no,tx,rx,bi,
pfc,auto
net1 adv_10gfdx_cap r- -- -- 0 1,0
net1 en_10gfdx_cap -- -- -- 0 1,0
net1 adv_1000fdx_cap r- -- -- 0 1,0
net1 en_1000fdx_cap -- -- -- 0 1,0
net1 adv_1000hdx_cap r- -- -- 0 1,0
net1 en_1000hdx_cap -- -- -- 0 1,0
net1 adv_100fdx_cap r- -- -- 0 1,0
net1 en_100fdx_cap -- -- -- 0 1,0
net1 adv_100hdx_cap r- -- -- 0 1,0
net1 en_100hdx_cap -- -- -- 0 1,0
net1 adv_10fdx_cap r- -- -- 0 1,0
net1 en_10fdx_cap -- -- -- 0 1,0
net1 adv_10hdx_cap r- -- -- 0 1,0
net1 en_10hdx_cap -- -- -- 0 1,0
net1 maxbw rw -- -- -- --
net1 cpus rw -- -- -- --
If you do not specify any options with the dladm show-ether command, only the current Ethernet property values for the datalink are displayed. To obtain information beyond what is provided by default, use the –x option, as shown in the following example:
# dladm show-ether -x net1 LINK PTYPE STATE AUTO SPEED-DUPLEX PAUSE net1 current up yes 1G-f both -- capable -- yes 1G-fh,100M-fh,10M-fh both -- adv -- yes 100M-fh,10M-fh both -- peeradv -- yes 100M-f,10M-f both
With the –x option, the command also displays the built-in capabilities of the specified link, as well as the capabilities that are currently advertised between the host and the link partner.
The following information is displayed in this example:
For the Ethernet device's current state, the link is up and functioning at 1 Gigabits per second at full duplex. Its auto-negotiation capability is enabled and has bidirectional flow control, in which both the host and link partner can send and receive pause frames. This information is displayed in the first row of the output.
Subsequent rows of the example's output display information about datalink speed capabilities, actual datalink speeds that are advertised, as well as information from the peer system as follows:
The capabilities of the Ethernet device are listed. The negotiation type can be set to automatic. In addition, the device can support speeds of 1 Gigabits per second, 100 megabits per second, and 10 megabits per second, at both full and half duplex. Likewise, pause frames can be received or sent in both directions between host and link partner.
The capabilities of net1 are advertised as follows: autonegotiation, speed-duplex, and flow control of pause frames.
Similarly, net1's link or peer partner advertises the following capabilities: autonegotiation, speed-duplex, and flow control of pause frames.