Specifications

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Cisco MGX 8850 (PXM45) and MGX 8950 Software Configuration Guide
Release 3, Part Number 78-14788-01 Rev. C0, January 2004
Appendix A Downloading and Installing Software Upgrades
Upgrade Procedures for RPM-PR Cards
Tip If the bootflash contains bootable images and the sequence is such that the card will not start, you
can enter rommon mode and load the bootable image. To get into rommon mode, establish a console
connection to the RPM-PR card, reset the RPM-PR card using the resetcd <slot> command from the
active PXM1E card, then quickly enter the CTRL-[, Break sequence at the RPM-PR console. The
command to send a Break depends on the computer platform and software you are using. It may take
a couple of attempts to successfully get into rommon mode. When you are in rommon mode, the
RPM-PR card displays the rommon 1 > prompt.
Once in rommon mode, you can enter the dir bootflash: command to display the images in bootflash.
To boot one of the images, enter a boot command using the following format: boot
bootflash:filename.
Upgrading RPM-PR Runtime Software
The runtime software on the RPM-PR can be loaded from the following sources:
• E:RPM directory on the PXM45 hard disk
• Bootflash
• TFTP server on a LAN to which an RPM back card is connected
Cisco Systems recommends that you configure the RPM-PR card to load from the E:RPM directory on
the PXM45 hard disk. Note that images will load much faster from bootflash, but if you are using
multiple RPM-PR cards, it takes longer to complete an upgrade because the runtime software must be
copied to each RPM-PR card’s bootflash instead of to a single location.
At startup, the RPM-PR card attempts to load the software in the order listed in the startup-config file.
The following example shows an excerpt from a startup-config file:
!
boot system e:rpm-js-mz_122-4.T
boot system bootflash:rpm-js-mz_122-4.T
boot config c:auto_config_slot09
logging rate-limit console 10 except errors
enable password *****
!
In the startup-config file example, the RPM-PR card attempts to load the runtime software from the
PXM45 card (e:rpm-js-mz_122-4.T) first, and if that fails, it attempts to load the image copy stored in
bootflash. This configuration takes longer to upgrade, but it assures the card can reboot if someone
accidentally removes the file on the PXM45 hard disk.
To configure the RPM-PR to load upgraded runtime software from the PXM45 hard disk, you need to
do the following tasks:
• Copy the upgraded file to the PXM45 hard disk.
• Update the boot system variable in the router startup-config file to load the new file.
• Reset the RPM-PR card so that it loads the new file.
RPM-PR cards can be configured for 1:N redundancy as well as for non-redundant configurations. The
procedures for both types of configuration are in the sections that follow.