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microcode (Cisco IOS image)

Cisco 12000 Series Gigabit Switch Routers 41

microcode (Cisco IOS image)

To load a Cisco IOS software image on a line card from Flash memory or the GRP card on a

Cisco 12000 series Gigabit Switch Router, use the microcode global conﬁguration command. To

load the microcode bundled with the GRP system image, use the no form of this command.

microcode interface {ﬂash ﬁle-id [slot]|system [slot]}

no microcode interface [ﬂash ﬁle-id [slot] | system [slot]]

Syntax Description

Default

The default is to load the image from the GRP card.

Command Mode

Global conﬁguration

Usage Guidelines

This command was modiﬁed in Cisco IOS Release 11.2 GS to load the Cisco IOS software image

onto a line card in the Cisco 12000 series Gigabit Switch Routers.

In addition to the Cisco IOS image that resides on the GRP card, each line card on a Cisco 12000

series has a Cisco IOS image. When the router is reloaded, the speciﬁed Cisco IOS image is loaded

onto the GRP card, and that image is automatically dowloaded to all the line cards.

Normally, you want the same Cisco IOS image on the GRP card and all line cards. However, if you

want to upgrade a line card with a new version of microcode for testing or to ﬁx a defect, you might

need to load a Cisco IOS image that is different from the one on the line card. Additionally, you

might need to load a new image on the line card to work around a problem that is affecting only one

of the line cards.

interface One of the following interface names: oc12-atm, oc12-pos, or

oc3-pos-4.

ﬂash Loads the image from the Flash ﬁle system.

ﬁle-id Speciﬁes the device and ﬁlename of the image ﬁle to download. A

colon (:) must separate the device and ﬁlename (for example,

slot0:gsr-p-mz). Valid devices are as follows:

• bootﬂash—Internal Flash memory.

• slot0—First PCMCIA slot.

• slot1—Second PCMCIA slot.

slot (Optional) Slot number of the line card that you want to copy the

software image to. Slot numbers range from 0 to 11 for the

Cisco 12012 and 0 to 7 for the Cisco 12008. If you do not specify a

slot number, the Cisco IOS software image is downloaded on all line

cards.

system Loads the image from the software image on the GRP card.

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