Installation guide

Interface Commands
4-187
4
• Avoid using flow control on a port connected to a hub unless it is actually
required to solve a problem. Otherwise back pressure jamming signals may
degrade overall performance for the segment attached to the hub.
Example
The following example enables flow control on port 5.
Related Commands
negotiation (4-184)
capabilities (flowcontrol, symmetric) (4-185)
media-type
This command forces the port type selected for combination ports 23-24 . Use the no
form to restore the default mode.
Syntax
media-type mode
no media-type
mode
• copper-forced - Always uses the built-in RJ-45 port.
• sfp-forced - Always uses the SFP port (even if module not installed).
• sfp-preferred-auto - Uses SFP port if both combination types are
functioning and the SFP port has a valid link.
Default Setting
sfp-preferred-auto
Command Mode
Interface Configuration
(Ethernet - Ports
23-24 )
Example
This forces the switch to use the built-in RJ-45 port for the combination port 24.
Console(config)#interface ethernet 1/5
Console(config-if)#flowcontrol
Console(config-if)#no negotiation
Console(config-if)#
Console(config)#interface ethernet 1/24
Console(config-if)#media-type copper-forced
Console(config-if)#