User guide

Release Notes for Cisco IOS Release 12.4T

OL-8012-09 Rev. B0

Platform-Specific Information

• VIC2-2E/M

• VIC2-4FXO: four-port voice interface card—FXO (universal)

• VIC-2BRI-NT/TE: two-port voice/fax interface card (BRI [NT and TE])

• VPN Module: MOD1700-VPN

Feature Support

For feature support in Cisco IOS Release 12.4, see the “Feature Support” section on page 7.

Additional Notes for the Cisco 1700 Series Routers

This section contains important information about using the Cisco 1700 series routers with Cisco IOS

Release 12.4T software.

SmartInit

The following points must be observed while using SmartInit:

• If the user has configured the no memory-size iomem command from a pre-SmartInit image (old

image) and a SmartInit image is loaded on the router, the router will boot with SmartInit enabled.

The running configuration will not display any memory-size iomem command-line interface (CLI).

• If the user has configured the memory-size iomem 10 command from a pre-SmartInit image and a

SmartInit image is loaded on the router, the router will boot with SmartInit enabled. Consequently,

the I/O memory size may not be 10 percent (as expected on a pre-SmartInit image).

• If the user configures the memory-size iomem 10 command on a SmartInit image, it will be

displayed in the running and startup configurations. This is different from the pre-SmartInit that

does not display the memory-size iomem 10 command because 10 percent is the default I/O

memory size.

• If the user-configured I/O memory size is too low or too high, the I/O memory size calculated by the

SmartInit image will be different from the configured value, but the running configuration will still

display the configured value only. The user can get the actual iomem size using the show version

or show memory command.

Using the boot flash Command

Booting a Cisco 1700 series router with the boot flash or boot system flash command results in

unpredictable behavior. To work around this problem, be sure to enter a colon (:) following both

commands (for example, boot flash: or boot system flash:).

Fan Operation in Cisco 1700 Series Routers

The fans in the Cisco 1700 series routers stay off until thermally activated (45°C/115°F).