Cisco Systems WS-X6608-T1 用户手册
1-6
Ci sco Catalyst 4900M Swit ch I nst allati on Guide
78-18350-02
Chapter 1 Product Overvi ew
Catal yst 4900M Switch Chassis
Chassis Cooling
The ho t-swapp able ch assis fan tray (WS-X499 2) provides coo ling air for th e internal ch assis
compo nen ts. Th e fans draw air in from the right side of the chassis and exh aust the heated air th rou gh
p erforations on the right side of the chassis.
compo nen ts. Th e fans draw air in from the right side of the chassis and exh aust the heated air th rou gh
p erforations on the right side of the chassis.
Caution
When the fan tray is removed, internal circuitry is exp osed that should not be touched by to ols or fingers .
The system sho uld n ot operate without a fan tray for lo nger th an is necessary to replace a fau lty fan tray
with a new fan tray.
The system sho uld n ot operate without a fan tray for lo nger th an is necessary to replace a fau lty fan tray
with a new fan tray.
shows th e direction of airflow through the switch.
Fan
(front and rear)
FAN LED indicates the fan tray status .
•
Green—Fan tray operational.
•
Red— Fault detected . On e or mo re fans n ot functional.
•
Off—No p ower to the fan tray.
PS1 an d PS2
(front)
PS1 and the PS2 LEDs indicates the intern al power s upply status.
•
Off—No p ower to the power supply.
•
Green—Operational.
1
•
Red— Fault detected or th e on/off switch is set to off while th e
power sup ply is p lugged in.
power sup ply is p lugged in.
LINK
A link status LED is located below the 1 0-GB u plink ports.
1.
If eit her LED is green and the ot her i s OFF t he power supp ly i s probabl y not plu gged in. If it i s red, t he
suppl y is ei ther plugg ed i n and not swit ched on or it i s fau lty . It may be neces sary t o in terrog at e t he syst em
fo r furt her status usi ng t he CLI.
suppl y is ei ther plugg ed i n and not swit ched on or it i s fau lty . It may be neces sary t o in terrog at e t he syst em
fo r furt her status usi ng t he CLI.
Table 1-3
Front Panel LED Descriptions (continued)
LED
Description