Data Sheet
Cisco 1700 Series Modular Access Router Cisco 1721
The Cisco 1721 Modular Access Router is designed to help organizations embrace the productivity benets of e-business applications. The Cisco 1721 router enables e-business by delivering secure Internet, intranet, and extranet access with virtual private networks (VPNs) and rewall technology. The Cisco 1721 router offers:
Wide array of WAN access options, including high-speed business-class digital subscriber line (DSL) High-performance routing with bandwidth management Inter-virtual LAN (VLAN) routing VPN access with rewall option The Cisco 1721 supports standards-based IEEE 802.1Q VLAN routing, which enables enterprises to set up multiple VLANs and route between them for added security within the internal corporate network. Powered by Cisco IOS Software, the Cisco 1721 router provides a cost-effective solution for small and medium businesses and enterprise small branch ofces to support e-business applications through a comprehensive feature set in a compact design.
The Cisco 1721 router offers the following key features: A RISC processor to support high-performance routing, encryption, and broadband services One autosensing 10/100 Fast Ethernet port Two WAN interface card (WIC) slots that support the same data WAN interface cards as the Cisco 1600, 2600, and 3700 routers One auxiliary (AUX) port (up to 115.2-kbps asynchronous serial) One console port One internal expansion slot for the hardware-assisted VPN encryption card (MOD1700-VPN)
Figure 1: The Cisco 1721 Router delivers a versatile e-business WAN access solution.
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The Cisco 1700 Series supports the value of end-to-end Cisco network solutions with the following benets: FlexibilityThe modular Cisco 1721 adapts easily to t the needs of growing businesses. Interchangeable WAN interface cards enable easy additions or changes in WAN technologies without requiring a forklift upgrade of the entire platform. Modular data slots enable users to tailor data services as needed. SecurityThe Cisco 1721 supports hardware-assisted wire-speed Triple Digital Encryption Standard IP Security (3DES IPSec) VPN encryption (using optional VPN module), a Cisco IOS Software-based stateful inspection rewall, and an intrusion detection system (IDS) that allows customers to keep their data safe. Business-class DSLBusiness-class DSL is delivered through the optional asymmetric DSL (ADSL) or symmetrical high-bit rate DSL (G.shdsl) WICs. The Cisco 1700 Series business-class DSL solution combines the cost benets of DSL service with the advanced routing capability required for business use of the Internet. Through enhanced DSL quality-of-service (QoS) features, performance levels for mission-critical applications and toll-quality voice/data integration are guaranteed. Trafc managementThe Cisco 1721 is based on Cisco IOS Software, the accepted standard for Internet operations. Cisco IOS Software allows trafc prioritization by user or application, ensuring that the most strategic e-business applications and time-sensitive applications perform as expected. E-Business Applications VPN and Security The Cisco 1721 router is part of the end-to-end Cisco VPN solution. VPNs create secure connections via the Internet to connect geographically dispersed ofces, business partners, and remote users while providing security, trafc prioritization, management, and reliability equal to that of private networks. By supporting industry standards, IPSec, Layer 2 Tunneling Protocol (L2TP), and DES and 3DES, the Cisco 1721 router delivers robust VPN solutions to ensure data privacy, integrity, and authenticity. The optional VPN hardware encryption module for the Cisco 1721 router further optimizes VPN encryption performance. By ofoading encryption tasks to the VPN module, the router processor is freed to handle other operations. The VPN module accelerates the rate at which encryption occurs, speeding the process of transmitting secure data, a critical factor when using 3DES encryption. The Cisco 1721 router offers integrated security features, including stateful inspection rewall functionality and IDS as an optional Cisco IOS Software feature. By deploying Cisco IOS Software rewall functionality, customers do not need to purchase or manage multiple devices, thus simplifying network management and reducing capital costs. Additionally, remote management applications, such as Cisco Security Device Manager (SDM), make it easier than ever to deploy and monitor Cisco IOS Firewall and VPN on your Cisco 1721 router. Cisco IOS Software rewall security features include access control lists (ACLs), user Authentication, Authorization, and Accounting (such as Password Authentication Protocol/Challenge Handshake Authentication Protocol [PAP/ CHAP], TACACS+, and Remote Access Dial-In User Service [RADIUS]). These security features provide the optimal level of rewall protection to customers. The Cisco 1700 Series routers support the Cisco Easy VPN Remote feature that allows the routers to act as remote VPN clients. As such, these devices can receive predened security policies from the headquarters VPN head-end, thus minimizing conguration of VPN parameters at the remote locations. This solution makes deploying VPN simpler for remote ofces with little IT support or for large deployments where it is impractical to individually

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congure multiple remote devices. While customers wishing to deploy and manage site-to-site VPN would benet from Cisco Easy VPN Remote because of its simplication of VPN deployment and management, managed VPN service providers and enterprises who must deploy and manage numerous remote sites and branch ofces with Cisco IOS routers for VPN will realize the greatest benet. The Cisco 1700 Series routers also support the Cisco Easy VPN Server feature that allows a Cisco 1700 router to act as a VPN head-end device. In site-to-site VPN environments, the Cisco 1700 router can terminate VPN tunnels initiated by the remote ofce routers using the Cisco Easy VPN Remote. Security policies can be pushed down to the remote ofce routers from the Cisco 1700 router. In addition to terminating site-to-site VPNs, a Cisco 1700 router running the Unied VPN Access Server can terminate remote access VPNs initiated by mobile and remote workers running Cisco VPN client software on PCs. This exibility makes it possible for mobile and remote workers, such as sales people on the road, to access company intranet where critical data and applications exist. Business-Class DSL The Cisco 1721 router supports business-class DSL through the optional ADSL or G.shdsl WICs. The Cisco 1721 business-class DSL solution combines the cost benets of DSL service with the advanced routing capability required for business use of the Internet. Through enhanced DSL QoS features, performance levels for mission-critical applications are guaranteed. (See Figure 2.)
Figure 2 The Cisco 1700 Series Deployed with an ADSL WIC

Small Branch Office

Headquarters Cisco 6X00 (DSLAM) ADSL WAN Cisco 7X00
Cisco 1700 Series Router with ADSL WIC
When equipped with optional Ethernet WICs, the Cisco 1700 Series supports a two- or three-Ethernet conguration, enabling deployment with an external broadband modem (such as DSL, cable modem, or wireless modem)often supplied by a service provider as a demarcation point and deployment of a demilitarized zone (DMZ). (See Figure 3.)
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Figure 3: The Cisco 1700 Series Deployed with an Ethernet WIC and an External DSL or Cable Modem

Internet

DSL/Cable Modem Ethernet WIC
Cisco 1700 Series Router with Cisco IOS Firewall and an Ethernet WIC
Comprehensive Feature Set and Benefits The Cisco 1721 offers a broad set of features designed to allow businesses to attain maximum benets on their investment and to easily deploy e-business solutions. See Table 2 for key features and benets. Table 1 Cisco 1721 Key Features and Benets
Features Flexibility and Investment Protection Benefits

Modular Architecture

Wide array of WAN options provide exibility and investment protection by accommodating future technologies while providing a solution to meet todays needs Reduces cost of maintaining inventory Offers lower training costs for support personnel Protects investments through reuse on various platforms Provides industrys most robust, scalable, and feature-rich internetworking software support using the accepted standard networking software for Internet and private WANs Constitutes part of the Cisco end-to-end network solution
WAN Interface Cards Shared with Cisco 1600, 2600, and 3700 Routers
Full Cisco IOS Support, including Multiprotocol Routing, QoS
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Table 1 Cisco 1721 Key Features and Benets (Continued)
Features Benefits Offers support for advanced QoS features such as the Resource Reservation Protocol (RSVP), Weighted Fair Queuing (WFQ), and IP Precedence to reduce recurring WAN costs QoS features (such as committed access rate [CAR], policy routing, low-latency queuing [LLQ], generic trafc shaping [GTS], Frame Relay trafc shaping [FRTS], and RSVP) allocate WAN bandwidth to priority applications for improved performance Allows expandability to support services such as hardware-assisted encryption

Quality of Service (QoS)

Expansion Slot on Motherboard
Complete Security and VPN Capability
Stateful Inspection Firewall (the Cisco IOS Firewall includes context-based access control for dynamic rewall ltering, denial-of-service detection and prevention, Java blocking, and real-time alerts) High-Performance VPN Encryption (IPSec DES and 3DES VPN module for high-speed, hardware-based encryption)
Allows internal users to access the Internet with secure, per-application-based, dynamic access control while preventing unauthorized Internet users from accessing the internal LAN Provides high-speed hardware-assisted encryption up to T1/E1 performance Enables creation of wire-speed VPNs by providing industry-standard data privacy, integrity, and authenticity as data traverses public networks Ensures proper identity and authenticity of devices and data Enables scalability to very large IPSec networks through automated key management Allows any standards-based IPSec or L2TP client to interoperate with Cisco IOS tunneling technologies Allows the router to act as remote VPN client and have VPN polices pushed down from the VPN concentrator Allows the router to terminate remote access VPNs initiated by mobile and remote workers running Cisco VPN client software on PCs; and allows the router to terminate site-site VPNs initiated by Cisco IOS routers using the Cisco Easy VPN Remote feature Simplies router and security conguration through smart wizards to enable customers to quickly and easily deploy, congure and monitor a Cisco access router without requiring knowledge of Cisco IOS Command Line Interface (CLI)

Device Authentication and Key Management (Internet Key Exchange [IKE], X.509v3 digital certication, support for Certicate Enrollment Protocol (CEP) with certicate authorities (CAs) such as Verisign and Entrust) VPN Tunneling with IPSec, Generic Routing Encapsulation (GRE), L2TP L2F ,

Cisco Easy VPN Remote

Cisco Easy VPN Server

Cisco SDM

Business-Class DSL
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Features Benefits Takes advantage of broadband access technologies such as ADSL or G.shdsl to increase WAN connectivity speeds and reduce WAN access costs Delivers business-class broadband access Offers efcient use of bandwidth
Supports ADSL and G.shdsl with advanced QoS features (Multilink PPP [MLP] with link fragmentation and interleaving [LFI], LLQ, Weighted Random Early Detection [WRED], CAR, differentiated services)
Simplied Management and Ease of Deployment
Device Integration (integrated router, firewall, encryption, VPN, tunnel server, data/channel service unit [DSU/CSU], and Network Termination 1 [NT1] in a single device) Manageable via Simple Network Management Protocol (SNMP) (CiscoView, CiscoWorks 2000, Telnet, and console port) Supports Cisco ConfigMaker, SETUP Configuration Utility
Reduces costs and simplies management compared to solutions based upon multiple, separate devices
Allows central monitoring, conguration, and diagnostics for all functions integrated in the Cisco router, reducing management time and costs Simplies and reduces deployment time and costs with graphical LAN/VPN policy congurator; command-line, context-sensitive conguration questions Enables inter-VLAN routing via the standards-based IEEE 802.1Q Available in all Cisco IOS feature sets, including base Cisco IOS feature set Congures remote routers automatically across a WAN connection to save cost of sending Provide at-a-glance indications for power, VPN module, network activity, and interface status

VLAN Support

Support for Cisco AutoInstall

LED Status Indicators

Reliability

Dial-on-Demand Routing

Allows automatic backup of WAN connection in case of a primary link failure Backup copy of the Cisco IOS Software can be stored in Flash memory Provides high network availability

Dual Bank Flash Memory

Hot Standby Router Protocol (HSRP)
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Hardware/Software Options Comprehensive WAN Support The Cisco 1721 supports up to two of the WICs listed in Table 3. These WICs support a wide variety of WAN technologies: Integrated Services Digital Network (ISDN), asynchronous serial and synchronous serial such as leased lines, Frame Relay, ADSL, G.shdsl, Switched 56, X.25, and Switched Multimegabit Data Service (SMDS), and single-port Ethernet. Also available are WICs that integrate a DSU/CSU into the Cisco 1721, eliminating the support costs and complexity of deploying and managing external devices.
Table 2 WAN Support for the Cisco 1721
WIC WIC-1T WIC-2T WIC-2A/S WIC-1B-S/T WIC-1B-U WIC-1DSU-56K4 WIC-1DSU- T1 WIC-1ADSL WIC-1ENET WIC-1SHDSL VWIC-1MFT-T1 VWIC-2MFT-T1 VWIC-2MFT-T1-DI VWIC-1MFT-E1 VWIC-2MFT-E1 VWIC-2MFT-E1-DI VWIC-1MFT-G703 VWIC-2MFT-G703 Description One-port serial, asynchronous and synchronous (T1/E1) Two-port serial, asynchronous and synchronous (T1/E1) Two-port low-speed serial (up to 128 kbps), asynchronous and synchronous One-port ISDN Basic Rate Interface (BRI) S/T One-port ISDN BRI U interface with integrated NT1 One-port integrated 56/64-kbps, four-wire DSU/CSU One-port integrated T1/fractional T1 DSU/CSU One-port ADSL interface One-port 10BASE-T Ethernet interface One-port G.shdsl interface One-port RJ-48 multiex trunk - T1 Two-port RJ-48 multiex trunk - T1 Two-port RJ-48 multiex trunk - T1 with drop and insert One-port RJ-48 multiex trunk - E1 Two-port RJ-48 multiex trunk - E1 Two-port RJ-48 multiex trunk - E1 with drop and insert One-port RJ-48 multiex trunk - E1 G.703 Two-port RJ-48 multiex trunk - E1 G.703
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Hardware VPN Encryption Module All Cisco 1700 models are equipped with an internal expansion slot to support an optional eld-installable hardware VPN encryption module. The VPN encryption module ofoads encryption processing from the Cisco 1700 Series RISC processor, providing performance up to T1/E1 speeds. The VPN encryption module (MOD1700-VPN) supports a maximum of 100 remote access tunnels. Cisco IOS Software Feature Sets Cisco 1721 routers support a full range of Cisco IOS features, including multiprotocol routing, QoS, VPN, rewall/ IDS, and legacy IBM protocol and applications in use today. The Cisco 1721 router is shipped with the base Cisco IOS feature sets supporting IP routing and standards such as Network Address Translation (NAT), Open Shortest Path First (OSPF), RADIUS, Remote Monitoring (RMON), VLAN routing, basic QoS feature (Weighted Fair Queing), and Next Hop Resolution Protocol [NHRP]). Cisco IOS IP Plus feature sets contain L2TP, L2F, Border Gateway Protocol (BGP), IP multicast, Frame Relay switched virtual circuit (SVC), RSVP, PPP over Ethernet client, NetFlow, the Netware Link Services Protocol (NLSP), Simple Multicast Routing Protocol (SMRP), the Web Cache Control Protocol (WCCP), and the Network Timing Protocol (NTP). In addition, enhanced QoS features are also supported (LLQ, FRTS, RSVP, CEF, WRED, DiffServ, MLPP with LFI). IPSec encryption is offered in special encryption feature sets (Plus IPSec 56 and Plus IPSec 3DES). To build an IP VPN, the recommended feature sets are IP/Firewall Plus IPSec 56 or IP/Firewall Plus IPSec 3DES. For a detailed list of features and memory requirements for a given feature set, see Cisco IOS 1700 Release Notes. Network Management and Installation Tools The Cisco 1721 router supports a range of network-management and ease-of-installation tools. Cisco Security Device Manager (SDM) is an intuitive, easy to use, web-based device management tool embedded within the Cisco IOS access routers. SDM enables resellers and customers to quickly and easily deploy, congure and monitor a Cisco access router without requiring knowledge of Cisco IOS Command Line Interface (CLI). Through smart wizards, SDM can automate best practices for NAT, ACLs, VPN and rewall deployment. Other common LAN, WAN, and routing protocol congurations can also be easily performed through SDM. Network resellers and customers can further ne-tune router congurations for changing business needs and preview the Cisco IOS CLI for each conguration through SDM. CiscoWorks2000, the industry-leading Web-based network management suite, provides the ability to remotely congure, administer, monitor, and troubleshoot the Cisco 1721 router; and increased visibility into network behavior to quickly identify performance bottlenecks and long-term performance trends. It also provides sophisticated conguration tools to optimize bandwidth and utilization across expensive and critical WAN links in the network. CiscoView, part of CiscoWorks2000, is a Web-based tool that graphically provides real-time status of the Cisco 1721 router. It can drill down to display monitoring information on interfaces and provide dynamic status, statistics, and comprehensive conguration information.

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CiscoWorks Small Network Management Solution (SNMS) is a comprehensive, Web-based network management solution that provides a powerful set of monitoring, conguration, and management tools to simplify the administration of small to medium business networks and workgroups that contain up to 20 Cisco internetworking products (switches, routers, hubs, and access servers). CiscoWorks SNMS is an ideal solution for companies that need server monitoring and network management from a single application to optimize performance and maximize network productivity. With CiscoWorks SNMS, Cisco provides a cost-effective and user-friendly solution that helps Cisco customers make the optimal use of their resources. The solution provides the following: Web interface for all applicationsCiscoWorks SNMS can be used from any browser in the network with the appropriate user authentication. Simple integrated installation, autodiscovery, and automated import of devices using SNMP reduces complexities and overall setup time associated with managing the network. CiscoWorks SNMS provides standards-based multivendor management. The WhatsUp Gold application in CiscoWorks SNMS allows administrators to view live network information, including the status of all hosts, servers, workstations, routers, other devices, and services. CiscoWorks SNMS grows and adapts to the changing devices in a dynamic network. Regular device updates are provided via downloadable les from Cisco.com. This scenario ensures that users can manage the most currently available Cisco devices without waiting for new versions of CiscoWorks SNMS to be released. Cisco CongMaker is a Microsoft Windows wizard-based tool designed to congure a small network of Cisco routers, switches, hubs, and other network devices from a single PC. This tool makes it easy to congure value-add security features such as the Cisco IOS Firewall Feature Set, IPSec encryption, NAT, the Dynamic Host Conguration Protocol (DHCP) server, and to establish VPN policies (including QoS and security). Cisco 1700 Series The Cisco 1700 Series enables deployment of a cost-effective, seamless network infrastructure for small and medium-sized businesses and small enterprise branch ofces. The Cisco 1700 Series access routers include the Cisco 1710, 1721,1751, 1760 (offered as a base model), Cisco 1751-V and Cisco 1760-V (offered as a multiservice-ready model.) The Cisco 1751 and Cisco 1760 Modular Access Routers are optimized for multiservice data and voice solutions. The Cisco 1721 router is a modular device optimized for data-access applications. The Cisco 1710 Security Access Router features comprehensive security with VPNs, Cisco IOS Firewall, and advanced routing functionality in an all-in-one device. Service and Support

Technical Support Services
Technical Support Services for the Cisco 1721 are available through Cisco SMARTnet and SMARTnet Onsite service programs. Cisco SMARTnet support augments the resources of your operations staff; it provides them access to a wealth of expertise, both on line and via telephone, the ability to refresh their system software at will, and a range of hardware Advance Replacement options.
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Cisco SMARTnet Onsite provides all SMARTnet services and complements the hardware Advance-Replacement feature by adding the services of a eld engineer, offering support that can be critical for those locations where stafng is insufcient or unavailable to perform parts-replacement activities. Table 4 gives features and benets of Cisco SMARTnet support. Table 3 Cisco SMARTnet Features and Benets Technical Support Services
Features Cisco SMARTnet Support Cisco SMARTnet Onsite Support Access 24 x 7 to software updates Web access to technical repositories Telephone support through the Technical Assistance Center (TAC) Advance Replacement of hardware parts Benefits Enables proactive or expedited issue resolution Lowers total cost of ownership by utilizing Cisco expertise and knowledge Minimizes network downtime
Technical Support Services Delivery Cisco SMARTnet support is available to customers from both Cisco directly and through Cisco channel partners. Partners purchasing direct from Cisco may offer Cisco Branded Resale of Cisco SMARTnet Software. Partners purchasing through distribution may offer Packaged Cisco SMARTnet Software. For partners supporting the Cisco 1721 with their own service and support infrastructure, System Integrator Support 98 (SIS98) is available. Technical Specifications
Figure 4 Rear Panel, Cisco 1721 Access Router
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Physical Interfaces/Ports One 10/100BASE-TX Fast Ethernet port (RJ-45) Automatic speed detection Automatic duplex negotiation IEEE 802.1Q VLAN routing Two WAN interface card slots Supports any combination of two WAN interface cards as shown in Table 3 One auxiliary (AUX) port RJ-45 jack with EIA/TIA-232 interface Asynchronous serial data terminal equipment (DTE) with full modem controls Carrier Detect, data set ready (DSR), Request To Send (RTS), Clear To Send (CTS) Asynchronous serial data rates up to 115.2 kbps One console port RJ-45 jack with EIA/TIA-232 interface Asynchronous serial DTE Transmit/receive rates up to 115.2 kbps (default 9600 bps, not a network data port) No hardware handshaking such as RTS/CTS One internal expansion slot for support of hardware-assisted services such as VPN encryption (up to T1/E1 performance) WAN Interface Specifications (Optional) Synchronous serial interfaces on serial WAN interface cards Interface speed: up to 2.0 Mbps (T1/E1) Synchronous serial protocols: Point-to-Point Protocol (PPP), High-Level Data Link Control (HDLC), Link Access Procedure, Balanced (LAPB), IBM Systems Network Architecture (SNA) Synchronous serial WAN services: Frame Relay, X.25, SMDS Synchronous serial interfaces supported on the WIC-1T, WIC-2T, and WIC-2A/S cards: V.35, EIA/TIA-232, EIA/TIA-449, X.21, EIA-530 Asynchronous serial interfaces on serial WAN interface cards Interface speed: up to 115.2 kbps

Asynchronous serial protocols: PPP, Serial Line Internet Protocol (SLIP) Asynchronous interface: EIA/TIA-232 ADSL WAN interface card Supports ATM adaptation layer 5 (AAL5) services and applications Interoperates with Alcatel DSL access multiplexer (DSLAM) with Alcatel chipset and Cisco 6130/6260 DSLAM with Globespan chipset Complies with ANSI T1.413 issue 2 and ITU 992.1 (G.DMT) G.shdsl WAN interface card Based on the ITU G.991.2, delivers symmetrical data rates from 192 kbps to 2.3 Mbps; speeds vary, depending on loop length and line conditions ISDN WAN interface cards ISDN dialup and ISDN DSL (IDSL) at 64 and 128 kbps Encapsulation over IDSL, Frame Relay, and PPP Dimensions and Weight Width: 11.2 in.(28.4 cm) Height: 3.1 in. (7.85 cm) Depth: 8.7 in. (22.1 cm) Weight (maximum): 2.9 lb (1.32 kg) Power Locking connector on power socket AC input voltage: 100 to 240 VAC Frequency: 47 to 64 Hz AC input current: 0.5 amps Power dissipation: 20W (maximum) Environmental Operating temperature: 32 to 104 F (0 to 40 C) Nonoperating temperature: 4 to 149 F(20 to 65 C) Relative humidity: 10 to 85% noncondensing operating; 5 to 95% noncondensing, nonoperating
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Safety UL 1950 CSA 22.2No. 950 EN60950 EN41003 AUSTEL TS001 AS/NZS 3260 ETSI 300-047 BS 6301 (power supply) EMI AS/NRZ 3548 Class A Class B FCC Part 15 Class B EN60555-2 Class B EN55022 Class B VCCI Class II CISPR-22 Class B Immunity 55082-1 Generic Immunity Specication Part 1: Residential and Light Industry IEC 1000-4-2 (EN61000-4-2) IEC 1000-4-3 (ENV50140) IEC 1000-4-4 (EN61000-4-4) IEC 1000-4-5 (EN61000-4-5) IEC 1000-4-6 (ENV50141)
IEC 1000-4-11 IEC 1000-3-2 Network Homologation USA: ATIS/ACTA -TIA/EIA/IS - 968 (Former part 68), TIA/EIA/ IS-883, T1.TRQ.6-2001, TIA/EIA/TSB-129 Canada - CS-03 Japan - JATE Australia - AS/ACIF: S-02, S-043, C-559; ACA TS-002, TS-003, TS-006, TS-016, TS-031 New Zealand - PTC107, PTC200, PTC211, PTC270, CTR3 European Union + Switzerland: Directive 1999/5/EC Russia - CTR2, CTR3, CTR21, ITU-G.992.1, ITU-G991.2 Belarus - CTR3, CTR21 Czechia - CTR2, CTR3, CTR21 Poland - CTR3, PB-TE ITU-G.992.1 Hungary - CTR2, CTR3, CTR21, ITU-G.992.1 Singapore - IDA: TS-PSTN1, TS-ISDN1, TS-ADSL Taiwan - PSTN01, IS6100, ID002 Brazil - CTR3, CS-03 Mexico - CTR3, CS-03, FCC part 68 South Africa- CTR3 The Cisco 1700 series, including the Cisco 1721, is in compliance with the requirements of the countries for distribution. The Cisco 1700 Series conforms to Safety, EMI, Immunity, and Network homologation standards. Details can be obtained through your Cisco reseller or account manager.

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All contents are Copyright 19922002, Cisco Systems, Inc. All rights reserved. CCIP, the Cisco Powered Network mark, the Cisco Systems Verified logo, Cisco Unity, Follow Me Browsing, FormShare, Internet Quotient, iQ Breakthrough, iQ Expertise, iQ FastTrack, the iQ logo, iQ Net Readiness Scorecard, Networking Academy, ScriptShare, SMARTnet, TransPath, and Voice LAN are trademarks of Cisco Systems, Inc.; Changing the Way We Work, Live, Play, and Learn, Discover All Thats Possible, The Fastest Way to Increase Your Internet Quotient, and iQuick Study are service marks of Cisco Systems, Inc.; and Aironet, ASIST, BPX, Catalyst, CCDA, CCDP, CCIE, CCNA, CCNP, Cisco, the Cisco Certified Internetwork Expert logo, Cisco IOS, the Cisco IOS logo, Cisco Press, Cisco Systems, Cisco Systems Capital, the Cisco Systems logo, Empowering the Internet Generation, Enterprise/Solver, EtherChannel, EtherSwitch, Fast Step, GigaStack, IOS, IP/TV, LightStream, MGX, MICA, the Networkers logo, Network Registrar, Packet, PIX, Post-Routing, Pre-Routing, RateMUX, Registrar, SlideCast, StrataView Plus, Stratm, SwitchProbe, TeleRouter, and VCO are registered trademarks of Cisco Systems, Inc. and/or its affiliates in the U.S. and certain other countries. All other trademarks mentioned in this document or Web site are the property of their respective owners. The use of the word partner does not imply a partnership relationship between Cisco and any other company. (0203R) 07/02 LDI-4080 gm/ms5/03

Release Notes for Cisco 1721 Routers
Platform-Specific Documentation
Documents are available for the Cisco 1700 series routers on Cisco.com and on the Documentation CD-ROM at Product Documentation > Access Servers and Access Routers > Modular Access Routers > Cisco 1700 Series Routers. This location contains the following relevant documents:
Cisco 1700 Series Router Software Configuration Guide Regulatory Compliance and Safety Information for Cisco 1700 Routers
This location also contains the link Cisco 1721 Access Router. This link contains the following relevant documents:
Quick Start Guide for Your Cisco 1721 Access Router Cisco 1721 Access Router Hardware Installation Guide Release Notes for Cisco 1721 Routers (this document)
Additional links are Cisco 1700 Series Router Release Notes, containing IOS release notes relating to the Cisco 1700 series router; Configuration Notes for Cisco 1700 Series Routers, containing instructions for modifications and upgrades to Cisco 1700 series routers; and Interface Card Installation, containing installation procedures for WAN, LAN, and voice interface cards.

Obtaining Documentation

The following sections explain how to obtain documentation from Cisco Systems.

World Wide Web

You can access the most current Cisco documentation on the World Wide Web at the following URL: http://www.cisco.com Translated documentation is available at the following URL: http://www.cisco.com/public/countries_languages.shtml
Corporate Headquarters: Cisco Systems, Inc., 170 West Tasman Drive, San Jose, CA 95134-1706 USA
Copyright 2002. Cisco Systems, Inc. All rights reserved.
Obtaining Technical Assistance

Documentation CD-ROM

Cisco documentation and additional literature are available in a Cisco Documentation CD-ROM package, which is shipped with your product. The Documentation CD-ROM is updated monthly and may be more current than printed documentation. The CD-ROM package is available as a single unit or through an annual subscription.

Ordering Documentation

Cisco documentation is available in the following ways:
Registered Cisco Direct Customers can order Cisco product documentation from the Networking Products MarketPlace: http://www.cisco.com/cgi-bin/order/order_root.pl Registered Cisco.com users can order the Documentation CD-ROM through the online Subscription Store: http://www.cisco.com/go/subscription Nonregistered Cisco.com users can order documentation through a local account representative by calling Cisco corporate headquarters (California, USA) at 408 526-7208 or, elsewhere in North America, by calling 800 553-NETS (6387).

Documentation Feedback

If you are reading Cisco product documentation on Cisco.com, you can submit technical comments electronically. Click Feedback at the top of the Cisco Documentation home page. After you complete the form, print it out and fax it to Cisco at 408 527-0730. You can e-mail your comments to bug-doc@cisco.com. To submit your comments by mail, use the response card behind the front cover of your document, or write to the following address: Cisco Systems Attn: Document Resource Connection 170 West Tasman Drive San Jose, CA 95134-9883 We appreciate your comments.
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Technical Assistance Center
The Cisco TAC is available to all customers who need technical assistance with a Cisco product, technology, or solution. Two types of support are available through the Cisco TAC: the Cisco TAC Web Site and the Cisco TAC Escalation Center. Inquiries to Cisco TAC are categorized according to the urgency of the issue:
Priority level 4 (P4)You need information or assistance concerning Cisco product capabilities, product installation, or basic product configuration. Priority level 3 (P3)Your network performance is degraded. Network functionality is noticeably impaired, but most business operations continue. Priority level 2 (P2)Your production network is severely degraded, affecting significant aspects of business operations. No workaround is available. Priority level 1 (P1)Your production network is down, and a critical impact to business operations will occur if service is not restored quickly. No workaround is available.
Which Cisco TAC resource you choose is based on the priority of the problem and the conditions of service contracts, when applicable.

Cisco TAC Web Site

The Cisco TAC Web Site allows you to resolve P3 and P4 issues yourself, saving both cost and time. The site provides around-the-clock access to online tools, knowledge bases, and software. To access the Cisco TAC Web Site, go to the following URL: http://www.cisco.com/tac All customers, partners, and resellers who have a valid Cisco services contract have complete access to the technical support resources on the Cisco TAC Web Site. The Cisco TAC Web Site requires a Cisco.com login ID and password. If you have a valid service contract but do not have a login ID or password, go to the following URL to register: http://www.cisco.com/register/
Release Notes for Cisco 1721 Routers 78-14110-01
If you cannot resolve your technical issues by using the Cisco TAC Web Site, and you are a Cisco.com registered user, you can open a case online by using the TAC Case Open tool at the following URL: http://www.cisco.com/tac/caseopen If you have Internet access, it is recommended that you open P3 and P4 cases through the Cisco TAC Web Site.
Cisco TAC Escalation Center
The Cisco TAC Escalation Center addresses issues that are classified as priority level 1 or priority level 2; these classifications are assigned when severe network degradation significantly impacts business operations. When you contact the TAC Escalation Center with a P1 or P2 problem, a Cisco TAC engineer will automatically open a case. To obtain a directory of toll-free Cisco TAC telephone numbers for your country, go to the following URL: http://www.cisco.com/warp/public/687/Directory/DirTAC.shtml Before calling, please check with your network operations center to determine the level of Cisco support services to which your company is entitled; for example, SMARTnet, SMARTnet Onsite, or Network Supported Accounts (NSA). In addition, please have available your service agreement number and your product serial number.

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