F5 8900, Platform Manual

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By default, the media type on interfaces is set to automatically detect speed and duplexsettings, but you can
specify a media type as well. Use the following syntax to set the media type:
tmsh modify net interface <interface_key> media <media_type> | auto
If the media type does not accept the duplex mode setting, a message appears. If media type is set to
auto
,
or if the interface does not accept the duplex mode setting, the duplex setting is not saved to the
/config/bigip_base.conf
file.
Important: If you manually configure the platform to use specific speed and duplex settings on interfaces,
Auto-MDI/MDIX functionality is disabled by default. When an interface is set manually, it functions as a
data terminal equipment (DTE) port. This means that crossover cables are required to connect to other
DTE devices (such as servers), and straight-through cables are required for connecting to data
communications equipment (DCE) devices (for example, switches or routers). Be sure to use the correct
cable type (straight-through or crossover) if you manually set interface speed and duplex settings.
Important: Starting with BIG-IP software versions 9.4.8 and 10.1.0, Auto-MDI/MDIX functionality is
retained when you manually configure an interface to use specific speed and duplex settings. With these
versions of the BIG-IP system, you can use either a straight-through cable or a crossover cable when media
settings are forced, and you will be able to successfully link to either DTE or DCE devices.
Viewing valid media types for an interface using tmsh
You can use
tmsh
to view the valid media types for an interface.
Note: This platform might not support all of the media type options that are available in
tmsh
.
1. Open the Traffic Management Shell (tmsh).
tmsh
2. Change to the network module.
net
The system prompt updates with the module name:
user@bigip01(Active)(/Common)(tmos.net)#
.
3. Display the valid media types for a specific interface.
show running-config interface <interface_key> media-capabilities
Important: In all Gigabit Ethernet modes, the only valid duplex mode is full duplex.
The following is an example of the output you might see when you issue this command on interface
1.3:
net interface 1.3 {
media-capabilities {
none
auto
10T-FD
10T-HD
100TX-FD
100TX-HD
1000T-FD
1000T-HD
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The 8900 Platform