Nortel 450-24t 用户指南
Media Dependent Adapters
309978-D Rev 01
C-17
For instructions on installing your 450-1GBIC MDA on your BayStack 450
switch, see “Installing an MDA” following this section.
switch, see “Installing an MDA” following this section.
For instructions on installing GBICs on your 450-1GBIC MDA, see “Installing
GBICs” on page C-19.
GBICs” on page C-19.
Installing an MDA
The Uplink Module slot on the BayStack 450 switch accommodates a single
MDA. The connection can be either an RJ-45 10/100BASE-TX MDA or a fiber
(100BASE-FX, 1000BASE-SX/LX, or ATM) MDA with an SC or MT-RJ
connector.
MDA. The connection can be either an RJ-45 10/100BASE-TX MDA or a fiber
(100BASE-FX, 1000BASE-SX/LX, or ATM) MDA with an SC or MT-RJ
connector.
Table C-6.
450-1GBIC MDA Components
Item
Label
Description
1
Link
Communication link LEDs (green):
On: Valid communications link.
Off: The communications link connection is bad or there is no
connection to this port.
connection to this port.
Blinking: The corresponding port is management disabled.
2
Phy
Phy status LEDs (green):
On: The corresponding Phy port is active.
Off: The corresponding Phy port is in backup mode or there
is no connection to this port.
is no connection to this port.
3
Activity
Port activity LEDs (green):
Blinking: Indicates network activity level for the
corresponding port. A high level of network activity can cause
LEDs to appear to be on continuously.
corresponding port. A high level of network activity can cause
LEDs to appear to be on continuously.
4
GBIC Host port.
Note:
The MDAs are not hot-swappable. Power down the switch before
installing or removing an MDA.