User guide

Release Notes for Cisco IOS Release 12.4T

OL-8012-09 Rev. B0

Platform-Specific Information

• One auxiliary (AUX) port (up to 115.2 kbps asynchronous serial)

• One console port

• VPN Hardware Encryption Module

• Motorola MPC862P PowerQUICC at 100 MHz. The hardware encryption module offloads the

processor for encryption and decryption

• One internal expansion slot for support of hardware-assisted services such as encryption (up to

T1/E1) and compression

• DRAM memory: 96 MB default, expandable to 128 MB

• Flash memory: 32 MB default, 32 MB maximum

• One security slot that supports Kensington or similar lockdown equipment

• Desktop form factor

Cisco 1721

The Cisco 1721 router provides Internet and intranet access and includes the following features:

• Support for virtual private networking

• Modular architecture

• Network device integration

The Cisco 1721 router has the following hardware components:

• One autosensing 10/100 Fast Ethernet port, which operates in full- or half-duplex mode (with

manual override available) and supports IEEE 802.1Q VLAN

• Two WIC slots

• One auxiliary (AUX) port (up to 115.2 kbps asynchronous serial)

• One console port

• RISC processor for high-performance encryption

• One internal expansion slot for support of hardware-assisted services such as encryption (up to

T1/E1)

• DRAM memory: 64 MB (onboard default), 1 DIMM slot for a total DRAM maximum of 128 MB

• Flash memory: 32 MB default, not expandable

• Desktop form factor

The Cisco 1721 router supports any combination of one or two of the following WAN interface cards

(WICs) or multiflex Voice/WAN interface cards (VWICs) (data only), which are shared with the

Cisco 1700, Cisco 2600, and Cisco 3600 series routers:

• WIC-1T: one-port high-speed serial (synchronous/asynchronous)

• WIC-2T: two-port high-speed serial (synchronous/asynchronous)

• WIC-2A/S: two-port low-speed serial (synchronous/asynchronous) (up to 128 kbps)

• WIC-1ADSL: one-port ADSL

• WIC-1ADSL-I-DG: one-port ADSLoISDN WAN interface card

• WIC-1ADSL-DG: one-port ADSLoPOTS WIC with dying gasp

• WIC-1B-S/T: one-port ISDN BRI S/T