2Cisco 7513, Cisco7513-MX, and Cisco 7576 Card Cage and Backplane Assembly Replacement Instructions
Product Overview
Caution Before replacing the card cage and backplane assembly, read the “Safety Guidelines”
section on page 7. The specific procedures for removing and installing the card cage and backplane
assembly might require two people to perform.
Product OverviewThe Cisco 7513, Cisco 7513-MX, and Cisco 7576 card cage holds the processor modules used by
the system. Figure 1 shows the rear view of the system.
Thecard cage and backplane are one assembly. The Cisco 7513 and Cisco 7513-MX include the card
cage, backplane, dual arbiter, chassis interface, and the electrically erasable programmable
read-onlymemory (EEPROM) device that contains the system MAC addresses. The dual arbiter and
chassis interface are printed circuit boards that are attached to the rear of the backplane. The dual
arbiter and chassis interface are replaced when the card cage and backplane assembly is replaced.
The Cisco 7576 is a dual independent router system that includes two dual arbiters, two chassis
interfaces, and two EEPROM devices.
Note You must transfer the EEPROM device from your old card cage to the new card cage for your
system to retain all of its MACaddresses. You must then install the new EEPROM deviceon the old
card cage before you return the old card cage to Cisco. This procedure only applies if you are
replacing an equivalent card cage. It does not apply if you are upgrading a Cisco 7513 to a
Cisco 7576.