Datasheet

Upgrading System Memory, Internal Flash Memory, and Boot ROM in Cisco 2600 Series Routers

OL-5474-01

Replacing the Internal Flash Memory SIMM

Note For more information about the copy flash tftp command and other related commands, refer to the

Cisco IOS configuration and command reference publications. These publications are available on

the Documentation CD-ROM and on Cisco.com. You can also order printed copies. See the

“Obtaining Documentation” section on page 21 for ordering information.

Note To upgrade a Cisco 2620 or Cisco 2621 router to 32 MB of flash memory, you must install the flash

SIMM and upgraded boot ROM that are supplied with Cisco product number MEM2620-32FSBOOT=,

and you must install Cisco IOS Release 12.1(3)T or Cisco IOS Release 12.2T or later release. For the

boot ROM installation procedure, see the “Replacing the Boot ROM in Cisco 2600 Series Routers”

section on page 15.

Caution It is critical that the correct voltage SIMMs be installed in the Cisco 2600 series routers. Using the

incorrect memory causes the system to malfunction and may cause damage to the system board or

memory card. For flash memory requirements, see Table 5.

Table 5 Cisco 2600 Series Flash Memory SIMMs

Router Flash Memory Compatibility Flash Device

Cisco 2610 8 MB, 16 MB 5-V SIMM

Cisco 2611

Cisco 2612

Cisco 2613

Cisco 2620

1. For Cisco 2620 and Cisco 2621 routers, a boot ROM upgrade is required for 32 MB flash operation.

See the note above.

8 MB, 16 MB, 24 MB, 32 MB

Cisco 2621

Cisco 2650

Cisco 2651

Cisco 2610XM 16 MB, 32 MB, 48 MB 3.3-V SIMM

Cisco 2611XM

Cisco 2620XM

Cisco 2621XM

Cisco 2650XM

Cisco 2651XM