3Com WX4400 3CRWX440095A User Manual
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C
HAPTER
5: C
ONFIGURING
AND
M
ANAGING
P
ORTS
AND
VLAN
S
Configuring Interface
Preference on a
Dual-Interface
Gigabit Ethernet Port
(WX4400 only)
The gigabit Ethernet ports on a WX4400 have two physical interfaces: a
1000BASE-TX copper interface and a 1000BASE-SX or 1000BASE-LX
fiber interface. The copper interface is provided by a built-in RJ-45
connector. The fiber interface is optional and requires insertion of a
Gigabit interface converter (GBIC).
Only one interface can be active on a port. By default, MSS prefers the
GBIC (fiber) interface. You can configure a port to prefer the RJ-45
(copper) interface instead.
If you set the preference to RJ-45 on a port that already has an active
fiber link, MSS immediately changes the link to the copper interface.
To disable the fiber interface and enable the copper interface on a
WX4400 port, use the following command:
set port media-type port-list rj45
To disable the copper interface and reenable the fiber interface on a
WX4400 port, use the following command:
clear port media-type port-list
To display the enabled interface type for each port, use the following
command:
display port media-type [port-list]
To disable the fiber interface and enable the copper interface of port 2 on
a WX4400 switch and verify the change, type the following commands:
WX4400# set port media-type 2 rj45
WX4400# display port media-type
Port Media
Type
===========================================================
1 GBIC
2 RJ45
3 GBIC
4 GBIC