Users Guide
Version Description
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.0 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
8.1.1.0 Introduced on the E-Series.
7.6.1.0 Introduced on the S-Series.
7.5.1.0 Introduced on the C-Series.
pre-6.2.1.0 Introduced on the E-Series.
Usage Information
The no negotiation auto command is only available if you rst manually set the speed of a port to 10Mbits
or 100Mbits.
The negotiation auto command provides a mode option for conguring an individual port to forced-master/
forced slave after you enable auto-negotiation.
NOTE: The mode option is not available on non-10/100/1000 Base-T systems.
If you do not use the mode option, the default setting is slave. If you do not congure 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 congured with forced-master or forced-
slave.
CAUTION: Ensure that one end of your node is congured as forced-master and one is congured as
forced-slave. If both are congured the same (that is, forced-master or forced-slave), the show
interfaces command aps between an auto-neg-error and forced-master/slave states.
You can display master/slave settings with the show interfaces command.
You can use the negotiation auto command to turn autonegotiation on or o only on ber interfaces
operating at 1G speed.
If you use a 1 G SFP, disable autonegotiation on both peer ends. If you do not disable autonegotiation, the link does
not come up.
Example (Master/
Slave)
DellEMC(conf)# interface tengigabitethernet 1/1
DellEMC(conf-if)# neg auto
DellEMC(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
798 Interfaces