Setting The Mdix Mode Of An Ethernet Interface - HP FlexFabric 12900 Series Configuration Manual

Step
7. (Optional.) Enable the
interface to send storm control
threshold event traps.

Setting the MDIX mode of an Ethernet interface

IMPORTANT:
Fiber ports do not support the MDIX mode setting.
A physical Ethernet interface comprises eight pins, each of which plays a dedicated role. For example,
pins 1 and 2 transmit signals, and pins 3 and 6 receive signals. You can use both crossover and
straight-through Ethernet cables to connect Ethernet interfaces. To accommodate these types of cables,
an Ethernet interface can operate in one of the following Medium Dependent Interface-Crossover (MDIX)
modes:
MDIX mode—Pins 1 and 2 are receive pins and pins 3 and 6 are transmit pins.
•
MDI mode—Pins 1 and 2 are transmit pins and pins 3 and 6 are receive pins.
•
• AutoMDIX mode—The interface negotiates pin roles with its peer.
To enable the interface to communicate with its peer, set the MDIX mode of the interface mode by using
the following guidelines:
• Typically, set the MDIX mode of the interface to AutoMDIX. Set the MDIX mode of the interface to
MDI or MDIX only when the switch cannot determine the cable type.
When a straight-through cable is used, set the interface to operate in the MDIX mode different from
•
its peer.
When a crossover cable is used, perform one of the following operations:
•
Set the interface to operate in the same MDIX mode as its peer.
•
Set either end to operate in AutoMDIX mode.
•
To set the MDIX mode of an Ethernet interface:
Step
1. Enter system view.
2. Enter Ethernet
interface view.
3. Set the MDIX
mode of the
Ethernet interface.
Command
storm-constrain enable trap
Command
system-view
interface interface-type interface-number
mdix-mode { automdix | mdi | mdix }
13
Remarks
By default, the interface sends
traps when monitored traffic
exceeds the upper threshold or
drops below the lower threshold
from the upper threshold.
Remarks
N/A
N/A
By default, an Ethernet interface
operates in auto mode to negotiate
pin roles with its peer.