Chapter 11
| Interface Commands
Interface Configuration
– 389 –
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)#
Related Commands
negotiation (393)
speed-duplex (395)flowcontrol (391)
description This command adds a description to an interface. Use the no form to remove the
description.
Syntax
description string
no description
string - Comment or a description to help you remember what is attached
to this interface. (Range: 1-64 characters)
Default Setting
None
9. Support for auto-negotiation depends on transceiver type, such as 1G SFP.
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