CLI Reference Guide-R04

Chapter 11 | Interface Commands
Interface Configuration
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1000full - Supports 1 Gbps full-duplex operation
100full - Supports 100 Mbps full-duplex operation
100half - Supports 100 Mbps half-duplex operation
10full - Supports 10 Mbps full-duplex operation
10half - Supports 10 Mbps half-duplex operation
flowcontrol - Supports flow control.
symmetric - When specified, the port transmits and receives symmetric
pause frames.
Default Setting
100BASE-FX (SFP): 100full
1000BASE-T: 10half, 10full, 100half, 100full, 1000full
1000BASE-SX/LX//LHX/ZX (SFP/ SFP+): 1000full
10GBASE- CR/SR/LR/ER (SFP+): 10Gfull
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
◆ 10GBASE-SFP+ connections are fixed at 10G, full duplex. When auto-
negotiation is enabled, the only attribute which can be advertised is flow
control.
◆ The 1000BASE-T standard does not support forced mode. Auto-negotiation
should always be used to establish a connection over any 1000BASE-T port or
trunk.
◆ 10GBASE-SFP+ connections are fixed at 10G - full duplex. Auto-negotiation
must be disabled before you can configure or force an RJ-45 interface to use
the Flow Control option.
◆ When auto-negotiation is enabled with the negotiation command
9
, the switch
will negotiate the best settings for a link based on the capabilities command.
When auto-negotiation is disabled, you must manually specify the link
attributes with the speed-duplex and flowcontrol commands.
Example
The following example configures Ethernet port 5 capabilities to include 100half
and 100full.
Console(config)#interface ethernet 1/5
Console(config-if)#capabilities 100half
Console(config-if)#capabilities 100full
Console(config-if)#capabilities flowcontrol
Console(config-if)#
9. Support for auto-negotiation depends on transceiver type, such as 1G SFP.