F5 BIG-IP 3900, Manual

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b interface <interface_key> show
The following is an example of the output you see when you issue this command on interface 1.3:
INTERFACE 1.3
| Speed Pkts Pkts Drop Coll Bits Bits Errs Trunk
| Mbps in out in out
| UP 100 FD 667 0 667 0 342544 0 0
Viewing the status of all interfaces
You can use bigpipe or tmsh to view the status of all interfaces on the platform.
From the command line interface, use the following syntax to display the current status of all interfaces:
b interface show
The following is an example of the output you see when you issue this command on interface 1.3:
INTERFACE
Key Speed Pkts Pkts Drop Coll Bits Bits Errs Trunk
Mbps in out in out
1.1 DN 100 FD 0 213 0 0 0 74.2K 0
1.2 DN 100 FD 20 25 0 0 28.6K 33.9K 0
About interface media type and duplex mode
All interfaces on the BIG-IP system default to auto-negotiate speed and duplex settings. We recommend that you also
configure any network equipment that you plan to use with the BIG-IP system to auto-negotiate speed and duplex
settings. If you connect the BIG-IP system to network devices with forced speed and duplex settings, you must force
the speed and duplex settings of the BIG-IP system to match the settings of the other network device.
Important: If the BIG-IP system is attempting to auto-negotiate interface settings with an interface that has the
speed and duplex settings forced, you will experience severe performance degradation.
By default, the media type on interfaces is set to automatically detect speed and duplex settings, but you can specify a
media type. Use the following syntax to set the media type:
b interface <interface_key> media <media
type> | auto
.
If the media type does not accept the duplex mode setting, a message indicates this. 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 turned off by default. Additionally, 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 (for example, 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.
Viewing valid media types for an interface
This platform may not support all of the media type options that are available in bigpipe and tmsh. You can use bigpipe
or tmsh to view the valid media types for an interface.
From the command line interface, use the following syntax to display the valid media types for a specific interface:
b interface <interface_key> media show
Important: In all Gigabit Ethernet modes, the only valid duplex mode is full duplex.
12 | Platform Guide: 3900