Cisco 4510R - Catalyst Switch Manual de usuario descargar pdf (Pagina 15)

configuration.

Note: Similar behavior is also seen if a linecard is physically removed from the chassis and the supervisor is

switched over. The new active supervisor also prints an error message for the missing linecard. Issue the copy

start run command once the linecard is inserted back into the chassis.

Power Supply Redundancy

Catalyst 4500 Series Switches provide 1+1 redundancy for power supply. The power supply can also run in a

combined mode so that chassis can supply power with the combined power. All 4500 Chassis support this

power supply redundancy feature.

Catalyst 4500s support power supply redundancy only between power supplies of equal wattage and type

(AC/DC). A mix of power supplies is not supported. The second power supply recognized is placed into

err−disable mode.

Refer to this table for the effect in each of the configuration changes.

Configuration Change

Effect

Redundant to combined

(equal wattage/type power

supplies installed).

System log and syslog

messages are generated.

•

System power is not the

sum of two power supplies.

It is P+ (P * ratio). Refer to

the Available Power for

Catalyst 4500 Series

Switches Power Supplies

section of the product

documentation for more

information.

•

The modules marked as

power−deny in the show

module command output

status field are brought up if

there is sufficient power.

•

Combined to redundant

(equal wattage/type power

supplies installed).

System log and syslog

messages are generated.

•

System power is the power

capability of a single power

supply. The power supply

that is recognized first is the

one that supplies the power.

•

If there is not enough power

for all previously

powered−up modules, some

modules are powered down

and marked as power−deny

in the show module

command output status

field.

•

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