Administrator Guide

Defaults Enabled.
Command Modes INTERFACE
Supported Modes All Modes
Command
History
Version Description
8.3.17.0 Supported on the M I/O Aggregator
Usage
Information
The no negotiation auto command is only available if you first manually set the speed of a port to
10Mbits or 100Mbits.
The negotiation auto command provides a mode option for configuring an individual port to forced-
master/forced slave once auto-negotiation is enabled.
If the mode option is not used, the default setting is slave. If you do not configure forced-master or
forced slave on a port, the port negotiates to either a master or a slave state. Port status is one of the
following:
● Forced-master
● Force-slave
● Master
● Slave
● Auto-neg Error—typically indicates that both ends of the node are configured with forced-master or
forced-slave
CAUTION: Ensure that one end of your node is configured as forced-master and one is
configured as forced-slave. If both are configured the same (that is forced-master or
forced-slave), the show interfaces command will flap between an auto-neg-error and
forced-master/slave states.
You can display master/slave settings with the show interfaces command.
Example
(Master/Slave)
Dell(conf)# interface tengig 0/0
Dell(conf-if)#neg auto
Dell(conf-if-autoneg)# ?
end Exit from configuration mode
exit Exit from autoneg configuration mode
mode Specify autoneg mode
no Negate a command or set its defaults
show Show autoneg configuration information
Dell(conf-if-autoneg)#mode ?
forced-master Force port to master mode
forced-slave Force port to slave mode
Dell(conf-if-autoneg)#
Example
(Configured)
Dell#show interfaces configured
TenGigabitEthernet 13/18 is up, line protocol is up
Hardware is Dell Eth, 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:
...
User Information
Both sides of the link must have auto-negotiation enabled or disabled for the link to come up.
Interfaces 179