Reference Guide

Interfaces | 587
Figure 18-21. Display Auto-negotiation Master/Slave Setting (partial)
Both sides of the link must have auto-negotiation enabled or disabled for the link to come up.
The following table details the possible speed and auto-negotiation combinations for a line between
two 10/100/1000 Base-T Ethernet interfaces.
Related
Commands
portmode hybrid
c e s z
Set a physical port or port-channel to accept both tagged and untagged frames. A port configured this
way is identified as a hybrid port in report displays.
Syntax
portmode hybrid
To return a port to accept either tagged or untagged frames (non-hybrid), use the no portmode hybrid
command.
Defaults
non-hybrid
Command Modes
INTERFACE (conf-if-interface-slot/port)
Table 18-4. Auto-negotiation and Link Speed Combinations
Port 0 Port 1
Link Status between
Port 1 and Port 2
auto-negotiation enabled*
speed 1000 or auto
auto-negotiation enabled*
speed 1000 or auto
Up at 1000 Mb/s
auto-negotiation enabled
speed 100
auto-negotiation enabled
speed 100
Up at 100 Mb/s
auto-negotiation disabled
speed 100
auto-negotiation disabled
speed 100
Up at 100 Mb/s
auto-negotiation disabled
speed 100
auto-negotiation enabled
speed 100
Down
auto-negotiation enabled*
speed 1000 or auto
auto-negotiation disabled
speed 100
Down
* You cannot disable auto-negotiation when the speed is set to 1000 or auto.
FTOS#show interfaces configured
GigabitEthernet 13/18 is up, line protocol is up
Hardware is Force10Eth, address is 00:01:e8:05:f7:fc
Current address is 00:01:e8:05:f7:fc
Interface index is 474791997
Internet address is 1.1.1.1/24
MTU 1554 bytes, IP MTU 1500 bytes
LineSpeed 1000 Mbit, Mode full duplex, Master
ARP type: ARPA, ARP Timeout 04:00:00
Last clearing of "show interfaces" counters 00:12:42
Queueing strategy: fifo
Input Statistics:
...
speed (for 10/100/1000 interfaces) Set the link speed to 10, 100, 1000 or auto-negotiate the speed.