6CHAPTER 1: 3COM ROUTER INTRODUCTION

Figure 1 Schematic diagram of the 3Com Router architecture

Features of the 3Com
Router Version 1.10 The following table lists the basic features of the 3Com Router 1.x:

Tabl e 3 List of the 3Com Router 1.x features

System
service
TCP/UDP
IP forwarding engine
Fast
forwarding IP security
and firewall QoS
assurance
Route policy
management
RIP OSPF BGP
FTP
HTTP TELNET
VPN
PPP/SLIP
Configuration
management
Voice Service
......
Command
line
SNMP
Web
management
HDLC EthernetX.25Frame Relay
Attribute Description
Interconnection protocol LAN ■Supports Ethernet_II and Ethernet_SNAP frame structure
■Follows IEEE 802.2 and IEEE 802.3 regulations
WAN ■Supports Frame Relay and Frame Relay switching
■Supports FRoIP, FRoISDN
■Supports Multi-link Frame Relay (MFR), FR compression
■Supports FR Traffic Shaping (FRTS) to ensure even traffic over
the VCs on FR
■Supports X.25 and X.25 switching, X.25 Over TCP (XOT)
■Supports HDLC, SDLC and LAPB regulations
■Supports SLIP, PPP and MP
■Supports PPPoE Client
■Supports ITU-T Q.921 and Q.931 regulations, ISDN (ITU-T
Q.921, Q.931) and ISDN semi-permanent connection
■Supports bridging technology
Dial-up network ■Manages Modem through the AT command and configures
script to dial up.
■Supports dial demand Routing (dialer profiles and legacy
BDR)
■Supports Callback (PPP callback and ISDN Calling Line
Identification callback)
■Provides ISDN leased line, automatic dialing, and cyclic dial
queue backup
■Provides Dial interface backup
VPN ■Supports L2TP, implements VPDN (Supports DNIS user,
domain name user, and full name user)
■Supports L3 channel protocol GRE