Reference Guide

Interfaces | 143
Figure 10-19. show interfaces status Command Example
In Figure 10-19, several ports display “Auto” in the Speed field, including port 0/1. In Figure 10-20, the
speed of port 0/1 is set to 100 Mb and then its auto-negotiation is disabled.
Figure 10-20. Setting Port Speed Example
Setting Auto-Negotiation Options
The negotiation auto command provides a mode option for configuring an individual port to forced master/
forced slave after you enable auto-negotiation.
Table 10-4. Auto-Negotiation, Speed, and Duplex Settings on Different Optics
Caution: Ensure that only one end of the node is configured as forced-master and the other is configured as
forced-slave. If both are configured the same (that is, both as forced-master or both as forced-slave), the show
interface
command flaps between an auto-neg-error and forced-master/slave states.
Command mode
10GbaseT
module
10G SFP+
optics 1G SFP optics
Copper SFP -
1000baseT Comments
FTOS#show interfaces status
Port Description Status Speed Duplex Vlan
Te 0/1 Down Auto Auto --
Te 0/2 Down Auto Auto --
Te 0/3 Down Auto Auto --
Te 0/4 Down Auto Auto --
Te 0/5 Down Auto Auto --
Te 0/6 Down Auto Auto --
Te 0/7 Down Auto Auto --
Te 0/8 Down Auto Auto --
Te 0/9 Down Auto Auto --
Te 0/10 Down Auto Auto --
Te 0/11 Down Auto Auto --
Te 0/12 Down Auto Auto --
Te 0/13 Down Auto Auto --
[output omitted]
FTOS#configure
FTOS(conf)#interface tengig 0/1
FTOS(Interface 0/1)#speed 100
FTOS(Interface 0/1)#duplex full
FTOS(Interface 0/1)#no negotiation auto
FTOS(Interface 0/1)#show config
!
interface TenGigabitEthernet 0/1
no ip address
speed 100
duplex full
no shutdown