Dell S6000 Reference Manual page 658

Usage
This command is supported on C-Series, S-Series, and E-Series (TeraScale and
Information
ExaScale) 10/100/1000 Base-T Ethernet interfaces.
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 after you enable auto-negotiation.
If you do not use the mode option, 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:
•
•
•
•
•
You can display master/slave settings with the show interfaces command.
Example
Dell(conf)# int gi 0/0
(Master/Slave)
Dell(conf-if)#neg auto
Dell(conf-if-autoneg)# ?
end
exit
mode
no
show
Dell(conf-if-autoneg)#mode ?
forced-master Force port to master mode
forced-slave
Dell(conf-if-autoneg)#
Example
Dell#show interfaces configured
(Configured)
GigabitEthernet 13/18 is up, line protocol is up
Hardware is Force10Eth, 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
658
NOTE: The mode option is not available on non-10/100/1000 Base-T Ethernet
line cards.
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 flaps
between an auto-neg-error and forced-master/slave states.
Exit from configuration mode
Exit from autoneg configuration mode
Specify autoneg mode
Negate a command or set its defaults
Show autoneg configuration information
Force port to slave mode
Current address is 00:01:e8:05:f7:fc
Interfaces