Use this command to display the local administrative link advertisement configuration, local operational link advertisement, and the link partner advertisement for an interface. It also displays priority Resolution for speed and duplex as per 802.3 Annex 28B.3. It displays the Auto negotiation state, PHY Master/Slave Clock configuration, and Link state of the port.
If the link is down, the Clock is displayed as No Link, and a dash is displayed against the Oper Peer advertisement, and Priority Resolution. If Auto negotiation is disabled, then the admin Local Link advertisement, operational local link advertisement, operational peer advertisement, and Priority resolution fields are not displayed.
If this command is executed without the optional unit/slot/port parameter, then it displays the Auto-negotiation state and operational Local link advertisement for all the ports. Operational link advertisement will display speed only if it is supported by both local as well as link partner. If auto-negotiation is disabled, then operational local link advertisement is not displayed.
| Format | show port advertise [unit/slot/port] |
| Mode | Privileged EXEC |
The following commands show the command output with and without the optional parameter:
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Download EPUB(Extreme 220) (Switching)#show port advertise 0/1
Port: 0/1
Type: Gigabit - Level
Link State: Down
Auto Negotiation: Enabled
Clock: Auto
1000f 1000h 100f 100h 10f 10h
----- ----- ---- ---- --- ---
Admin Local Link Advertisement no no yes no yes no
Oper Local Link Advertisement no no yes no yes no
Oper Peer Advertisement no no yes yes yes yes
Priority Resolution - - yes - - -
(Extreme 220) (Switching)#show port advertise
Port Type Neg Operational Link Advertisement
--------- ------------------------------ ----------- ------------------------------
0/1 Gigabit - Level Enabled 1000f, 100f, 100h, 10f, 10h
0/2 Gigabit - Level Enabled 1000f, 100f, 100h, 10f, 10h
0/3 Gigabit - Level Enabled 1000f, 100f, 100h, 10f, 10h