The Cisco® 836 router is ideal for providing secure Internet and corporate network connectivity to small remote offices and to teleworkers (Figure 1). The Cisco 836 router provides integrated security services and advanced quality of service (QoS) features for high-quality data, voice, and video applications. It offers easy deployment and remote management features with Cisco IOS® Software.
The Cisco 836 router is ideal for providing secure Internet and corporate network connectivity to small remote offices and to teleworkers (Figure 1). The Cisco 836 router provides integrated security services and advanced quality of service (QoS) features for high-quality data, voice, and video applications. It offers easy deployment and remote management features with Cisco IOS Software.
The Cisco 836 router has an integrated asymmetric digital subscriber line (ADSL) modem that supports ADSL over Integrated Services Digital Network (ISDN). It has an integrated ISDN Basic Rate Interface (BRI) S/T port for a backup ISDN line, and a four-port 10/100 Ethernet LAN switch for connecting multiple PCs or network devices in a small-office network.
ADVANCED SECURITY AND PERFORMANCE FOR ENTERPRISE-CLASS VPNS
The Cisco 836 router delivers integrated enterprise-class security services, including hardware-accelerated IP Security (IPSec), Triple Data Encryption Standard (3DES) encryption for virtual private networks (VPNs), and stateful-inspection firewall for secure Internet connectivity. Optional advanced features-such as Cisco Easy VPN Remote (a software feature that allows simple deployment and management of VPNs); public key infrastructure (PKI) security requiring digital certificates; IPSec Network Address Translation transparency (NAT-T); the Cisco Intrusion Detection System (IDS)*; AES encryption*, and URL filtering*-help ensure that the small office receives the highest level of security, which contributes to the corporate network's security.
HIGH-QUALITY, SECURE VOICE AND VIDEO
The advanced QoS and high-performance encryption features of the Cisco 836 router provide high-quality voice and video services to remote users. When IP phones are connected at a remote site, a Cisco 836 router can queue and prioritize the voice traffic over data traffic to ensure a high quality, secure voice-over-IP (VoIP) connection from the remote or home office back to the corporate network. Unique Cisco IOS software capabilities such as Preclassification of Traffic prior to Encryption* and Look-ahead Fragmentation before Encryption* ensure that traffic is correctly prioritized over a secure IPSec tunnel.
Figure 1. The Cisco 836 ADSL over ISDN Router
MANAGEABLE, SCALABLE, AND RELIABLE ACCESS
The Cisco 836 router uses valuable management and deployment tools to deliver the industry's lowest total cost of ownership for connecting small remote offices and teleworkers to the corporate network. As a remotely manageable platform, the Cisco 836 router supports advanced remote troubleshooting commands available in Cisco IOS Software; out-of-band management through an ISDN port; and Secure Shell (SSH) Protocol for secure in-band management via Telnet.
For scalability in deployment and management, the Cisco Router Web SetUp Tool (CRWS), available in several languages, allows nontechnical users to quickly set up the router and turn on key features such as the stateful firewall. Cisco provides a suite of solutions-such as Cisco Easy VPN, the Cisco IE 2100 Intelligence Engine, Cisco VPN Solution Center (VPNSC), CiscoWorks Management Center for VPN Routers (Router MC), and Cisco Configuration Express-that allow for scalable network deployment and management, including automated security policy push and configuration updates.
For reliable access, the ISDN port provides ISDN dial backup and out-of-band management. The Cisco 836 router runs Cisco IOS Software, the industry-proven software that has become the standard for reliable business access.
FEATURES AND BENEFITS
Table 1. Key Product Features and Benefits
Features
Benefits
Advanced Security and Performance for Enterprise-Class VPNs
Stateful-inspection firewall
• Offers internal users secure, per-application dynamic access control (stateful inspection) for all traffic across perimeters
• Defends and protects router resources against denial-of-service (DoS) attacks
• Provides context-based access control (CBAC)
• Checks packet headers and drops suspicious packets
• Protects against unidentified, malicious Java applets
• Details transactions for reporting on a per-application, per-feature basis
Network security features with Cisco IOS Software, including access control lists (ACLs), Network Address Translation/Port Address Translation (NAT/PAT), Lock & Key security, dynamic ACLs, and router and route authentication
Provides perimeter network security to prevent unauthorized network access
Cisco Intrusion Detection System (IDS)*
Detects and prevents DoS attacks and unauthorized network access; sends alerts to initiate appropriate action
Hardware-accelerated IPSec 3DES encryption
• Delivers high-performance IPSec VPN encryption for broadband connections
• Supports Internet Key Exchange (IKE) and IPSec VPN standards for up to 10 simultaneous tunnels
• Provides WAN encryption for all users on the LAN without requiring the configuration of individual PCs
AES encryption*
AES support provides impenetrable security to the IPSec sessions
Cisco Easy VPN Remote
Provides easy deployment and maintenance of VPN connections with auto-IPSec tunnel initiation and policy push from a Cisco VPN concentrator or server
URL filtering with WebSENSE and N2H2 software and server*
• Allows a network administrator to easily apply Internet use policies to permit access only to company-approved URLs or categories of sites
• WebSENSE and N2H2 URL filtering software filters HTTP requests based on destination host name, destination IP address, keywords, and username
• WebSENSE and N2H2 maintains and updates a URL database of more than 20 million sites, organized into more than 60 categories
IPSec NAT Transparency (NAT Traversal or NAT Aware IPSec)*
Allows reliable creation of VPN tunnels independent of the placement of firewalls and NAT across multiple networks
IP QoS-Low Latency Queuing (LLQ), Weighted Random Early Detection (WRED), Committed Access Rate (CAR)
• Ensures consistent response times for multiple applications by intelligently allocating bandwidth
• Allows for classification of applications and gives the most important applications priority use of the WAN line
• Provides congestion avoidance by throttling down certain Transmission Control Protocol (TCP) sessions, depending on each session's priority level
Asynchronous Transfer Mode (ATM) QoS-ATM traffic universal broadband router (UBR), nonreal-time variable bit rate (VBRnrt), VBRrt, and constant bit rate (CBR) with per-VC queuing and traffic shaping
Provides QoS guarantees for real-time traffic, with ability to send traffic over the appropriate virtual circuit to provide ATM-level shaping and ensure that no head-of-line blocking can occur between circuits of different or equal traffic classes
High-performance encryption
Provides secure connectivity without affecting performance for bandwidth-intensive applications
IP multicast technology
Reduces redundant traffic; conserves bandwidth for corporate communications, distance-learning applications such as Cisco IP/TV®, software distribution, and access to stock quotes and news applications
Advanced Management Features for Low Cost of Ownership
Plug-and-play installation with default settings and Web-based setup tool
Nontechnical users can easily set up the router and customize advanced features
Cisco Router Web SetUp Tool
Allows nontechnical users to complete installation by simply pointing a browser at the router and providing user information
Cisco Easy VPN Remote
Provides easy deployment and maintenance of VPN connections with auto-IPSec tunnel initiation and pushed policy acceptance
Cisco Configuration Express
Lowers the cost of deployment by shipping preconfigured units directly to end users without requiring staging or storage
Router status page in CRWS
Provides a Web-based visual presentation of router configuration and feature status
Cisco IOS Software interactive debug and remote management features
Enables remote management and monitoring via Simple Network Management Protocol (SNMP), Telnet, or HTTP and local management via console port to diagnose network problems in detail
Cisco IOS Software command-line interface (CLI)
Allows customers to use existing knowledge of Cisco IOS Software CLI for easier installation and manageability without requiring additional training
Cisco IOS Software technology
Offers technology that is used throughout the backbone of the Internet and in most enterprise networks
Advanced Encryption Standard (AES) (software-based)*
-
X
X
URL filtering with WebSENSE software and server*
-
X
X
IPSec NAT Transparency (NAT Traversal or NAT Aware IPSec)*
-
X
X
Remote Authentication Dial-In User Service (RADIUS)
-
X
X
Terminal Access Controller Access Control System Plus (TACACS+)
-
X
X
QoS
LLQ
X
X
X
IP policy routing
X
X
X
WRED
-
X
X
CAR
-
X
X
Link Fragmentation and Interleaving (LFI)
-
X
X
Per-VC queuing and per-VC traffic shaping
X
X
X
ATM UBR, CBR, VBR-nrt, and VBR-rt (Cisco 836 and 837 routers only)
X
X
X
ATM fault management, Operation, Administration and Maintenance (OAM) (F5) segment continuity check and segment and end-to-end loopback and Interim Local Management Interface (ILMI) support
X
X
X
Ten virtual circuits/permanent virtual circuits (PVCs)
X
X
X
TX ring adjustment (Cisco 836 and 837 only)
X
X
X
Bandwidth Optimization and Management
IP multicast
-
X
X
Protocol Independent Multicast (PIM) sparse mode
-
X
X
Standards-based encryption (STAC) compression
X
X
X
Ease of Use and Deployment
CRWS
X
X
X
Cisco Easy VPN Remote
-
X
X
Management
SNMP, Telnet, and console port
X
X
X
Syslog
X
X
X
Trivial File Transfer Protocol (TFTP) client and server
X
X
X
Cisco Service Assurance Agent (SAA)
X
X
X
Out-of-band management through virtual AUX port
-
-
X
Out-of-band management through ISDN BRI S/T port
-
-
X
Redundancy
Hot Standby Router Protocol (HSRP)
-
X
X
Dial backup with external modem through ISDN BRI S/T port
-
-
X
Address Conservation and Allocation
NAT many-to-one (PAT)
X
X
X
NAT many-to-many (multi-NAT)
X
X
X
H.323 support with NAT
X
X
X
NetMeeting V.2.10/1 and 3.01
X
X
X
Session Initiation Protocol (SIP) support with NAT*
X
X
X
IP Control Protocol (IPCP) address and subnet negotiation
X
X
X
Dynamic Host Control Protocol (DHCP) client and server
X
X
X
DHCP relay
X
X
X
DHCP client address negotiation
X
X
X
*Features targeted for a future Cisco IOS Software release
Table 5. Cisco 800 Series DSLAM Interoperability
DSLAM
Chipset
Interoperability Status
Comments
Alcatel ASAM 1000
AME
Yes
-
Alcatel 7300
AME
Yes
-
Lucent Stinger
AME
Yes
-
ECI
ADI 918
Yes
UR-2 compliant
ECI
ADI 930
Yes
UR-2 compliant
Siemens XpressLink 2.0
TI
Yes
UR-2 compliant
Siemens XpressLink 2.1
TI
Yes
UR-2 compliant
Regulatory And Standards Compliance
The Cisco 836 router is available for worldwide deployment where ADSL over ISDN is used by service providers.
Safety
•
• UL 1950/CSA 950-95: Third Edition
• IEC 950: Second Edition with Amendments 1, 2, 3, and 4
• EN60950: 1992 with Amendments 1, 2, 3, and 4
• CS-03, Canadian Telecom Requirements
• FCC Part 68 U.S. Telecom Requirements
• AS/NZS 3260: 1996 with Amendments 1, 2, 3, and 4
