Chapter 11
| Interface Commands
Interface Configuration
– 426 –
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
9
)
1000BASE-T: 10half, 10full, 100half, 100full, 1000full
1000BASE-SX/LX/LHX/ZX (SFP
9
/ SFP+): 1000full
10GBASE-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.
◆ 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.
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. ECS4620-28F and ECS4620-28F-DC
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