Product Specifications - Cisco 851 Datasheet

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routers are suitable for deployment in small businesses or remote offices by value-added resellers,
enterprise IT managers, or service providers.

Product Specifications

Tables 3 and 4 list software and hardware features of Cisco 850 Series routers.
Table 3. Software Features of the Cisco 850 Series
Feature
Routing Protocols and
General Router Features
Recommended
Number of Users
DSL and ATM Features
(DSL Model Only)
Security Features
Quality of Service (QoS)
Features
Management Features
Description
● Routing Information Protocol (RIPv1 and RIPv2)
● Layer 2 Tunneling Protocol (L2TP)
● Network Address Translation (NAT) and Port Address Translation (PAT)
● RFC 1483/2684
● Point-to-Point Protocol over ATM (PPPoA) (Cisco 857)
● PPP over Ethernet (PPPoE)
● 802.1d Spanning Tree Protocol
● Dynamic Host Control Protocol (DHCP) server/relay/client
● Access control lists (ACLs)
● Generic routing encapsulation (GRE)
● Dynamic DNS Support for Cisco IOS
10
● ATM Unspecified Bit Rate (UBR), Constant Bit Rate (CBR), and Variable Bit
Rate/non-real-time (VBR-nrt)
● ATM Operation, Administration, and Maintenance (OAM) Support for F5 Continuity
Check; segment and end-to-end loopback; and Interim Local Management
Interface (ILMI) support
● 8 virtual circuits
● Stateful Inspection Firewall
● Hardware-accelerated Triple Data Encryption Standard (3DES) for IPSec
● Hardware-accelerated Advanced Encryption Standard (AES) for IPSec
● IPSec 3DES termination/initiation
● IPSec pass-through
● 5 VPN Tunnels
● Point-to-Point Tunneling Protocol (PPTP) pass-through
● L2TP pass-through
● Advanced Application Inspection and Control
● E-mail Inspection Engine
● No Service Password Recovery
● HTTP Inspection Engine
● System Logging-EAL4 Certification Enhancements
● Weighted Fair Queuing (WFQ)
● Policy-based routing (PBR)
● Per-VC queuing
● Per-VC traffic shaping
● Cisco SDM
● Cisco Configuration Express
● Cisco CNS 2100 Intelligence Engine support
● DSL firmware update from Flash
● Cisco Service Assurance Agent (SAA)
● Telnet, Simple Network Management Protocol (SNMP), CLI, and HTTP
management
● Out-of-band management with external modem through virtual auxiliary port
● RADIUS and TACACS+
Data Sheet
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