
Interface Configuration
7750 SR OS Interface Configuration Guide
Page 223
Values
1 — 10000 Mbps
Default
max
autonegotiate
Syntax
autonegotiate
[
limited
]
[
no
]
autonegotiate
Context
config>port>ethernet
Description
This command enables speed and duplex autonegotiation on Fast Ethernet ports and enables far-end
fault indicator support on gigabit ports.
There are three possible settings for autonegotiation:
• “on” or enabled with full port capabilities advertised
• “off” or disabled where there are no autonegotiation advertisements
• “limited” where a single speed/duplex is advertised.
When autonegotiation is enabled on a port, the link attempts to automatically negotiate the link speed
and duplex parameters. If autonegotiation is enabled, the configured duplex and speed parameters are
ignored.
When autonegotiation is disabled on a port, the port does not attempt to autonegotiate and will only
operate at the
speed
and
duplex
settings configured for the port. Note that disabling autonegotiation
on gigabit ports is not allowed as the IEEE 802.3 specification for gigabit Ethernet requires
autonegotiation be enabled for far end fault indication.
If the
autonegotiate
limited
keyword option is specified the port will autonegotate but will only
advertise a specific speed and duplex. The speed and duplex advertised are the
speed
and
duplex
settings configured for the port. One use for limited mode is for multispeed gigabit ports to force
gigabit operation while keeping autonegotiation enabled for compliance with IEEE 801.3.
7750 SR OS requires that autonegotiation be disabled or limited for ports in a Link Aggregation
Group to guarantee a specific port speed.
The
no
form of this command disables autonegotiation on this port.
Default
autonegotiate
Parameters
limited —
The Ethernet interface will automatically negotiate link parameters with the far end, but
will only advertise the speed and duplex mode specified by the Ethernet
commands.
Summary of Contents for 7750 SR OS
Page 6: ...Page 6 7750 SR OS Interface Configuration Guide Table of Contents ...
Page 8: ...Page 8 7750 SR OS Interface Configuration Guide List of Tables ...
Page 10: ...Page 10 7750 SR OS Interface Configuration Guide List of Figures ...
Page 14: ...Preface Page 14 7750 SR OS Interface Configuration Guide ...
Page 16: ...Getting Started Page 16 7750 SR OS Interface Configuration Guide ...
Page 184: ...Card MDA and Port Command Reference Page 184 7750 SR OS Interface Configuration Guide ...
Page 438: ...Debug Commands Page 438 7750 SR OS Interface Configuration Guide ...
Page 444: ...Index Page 444 7750 SR OS Interface Configuration ...