Chapter 11
| Interface Commands
Interface Configuration
– 351 –
Default Setting
None
Command Mode
Global Configuration
Example
To specify several different ports, enter the following command:
Console(config)#interface ethernet 1/17-20,23
Console(config-if)#
capabilities
This command advertises the port capabilities of a given interface during auto-
negotiation. Use the
no
form with parameters to remove an advertised capability,
or the
no
form without parameters to restore the default values.
Syntax
[
no
]
capabilities
{
1000full
|
100full
|
100half
|
10full
|
10half
|
flowcontrol
}
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
Default Setting
100BASE-FX: 100full (SFP)
1000BASE-T: 10half, 10full, 100half, 100full, 1000full
1000BASE-SX/LX/LHX/ZX (SFP/ SFP+): 1000full
Command Mode
Interface Configuration (Ethernet, Port Channel)
Command Usage
â—†
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.
â—†
When auto-negotiation is enabled with the negotiation command, 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.
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