Cisco Catalyst 3750 Metro - Speed

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Catalyst 3750 Metro Switch Command Reference
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Chapter 2 Catalyst 3750 Metro Switch Cisco IOS Commands
speed
speed
Use the speed interface configuration command to specify the speed of a 10/100 Mbps or
10/100/1000
Mbps port. Use the no or default form of this command to return the port to its default
value.
speed {10 | 100 | 1000 | auto [10 | 100 | 1000] | nonegotiate}
no speed
Syntax Description
Defaults The default is auto.
Command Modes Interface configuration
Command History
Usage Guidelines For 10/100 Mbps ports, if both speed and duplex are set to specific values, the link operates at the
negotiated speed and duplex value.
For 10/100/1000 Mbps ports, if both the speed and duplex are set to specific values, autonegotiation is
disabled.
You can configure the Fast Ethernet port speed as either 10 or 100 Mbps. You cannot configure speed on
SFP module ports, but you can configure speed to not negotiate (nonegotiate) if connected to a device
that does not support autonegotiation. However, when a 1000BASE-T SFP module is in the SFP module
port, you can configure speed as 10, 100, or 1000 Mbps or auto.
When a 1000BASE-T SFP module is inserted in an ES module port, the speed defaults to 1000.
10 Port runs at 10 Mbps.
100 Port runs at 100 Mbps.
1000 Port runs at 1000 Mbps. This option is valid and visible only on SFP module ports
when the 1000BASE-T SFP module is inserted.
auto Port automatically detects the speed it should run at based on the port at the other
end of the link. If you use the 10, 100, or 1000 keywords with the auto keyword, the
port only autonegotiates at the specified speeds.
nonegotiate Autonegotiation is disabled, and the port runs at 1000 Mbps. This option is valid and
visible only on SFP ports. (The 1000BASE-T SFP does not support the nonegotiate
keyword.)
Release Modification
12.1(14)AX This command was introduced.
12.2(25)EY Support for the 10, 100, and 1000 keywords with the auto keyword was
added.