Reference Guide

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.
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.
Auto-Negotiation, Speed, and Duplex Settings on Different Optics:
Command Mode 10GbaseT
module
10G SFP+
optics
1G SFP optics Copper SFP
- 1000baseT
Comments
speed 100 interface-
config
mode
Supported Not
supported(
Error
message is
thrown) (%
Error:
Speed 100
not
supported
on this
interface,
config
ignored Te
0/49)
Not
supported(Error
message is
thrown) (% Error:
Speed 100 not
supported on this
interface, config
ignored Te 0/49)
% Error:
Speed 100
not
supported
on this
interface,
speed auto interface-
config
mode
Supported Not
supported
Not supported Not
supported
Error
messages not
thrown
wherever it
says not
supported
speed 1000 interface-
config
mode
Supported Supported Supported Supported
speed 10000 interface-
config
mode
Supported Supported Not Supported Not
supported
Error
messages not
thrown
wherever it
says not
supported
negotiation
auto
interface-
config
mode
Supported Not
supported(
Should
some
error
message
Not supported Not
supported
Error
messages not
thrown
wherever it
says not
supported
Interfaces
115