3Com 3C13636 Configuration Manual page 291

3Com Router 3000 Ethernet Family
Configuration Guide
Chapter 1 PPP and MP Configuration ......................................................................................... 1-1
1.1 Introduction to PPP and MP .............................................................................................. 1-1
1.1.1 PPP ......................................................................................................................... 1-1
1.1.2 Introduction to MP ................................................................................................... 1-3
1.2 Configuring PPP ................................................................................................................ 1-3
1.2.1 Configuring PPP Encapsulation on the Interface.................................................... 1-4
1.2.2 Configuring the Polling Interval ............................................................................... 1-4
1.2.3 Configuring PPP Authentication Mode and Username and User Password .......... 1-4
1.2.4 Configuring PPP Negotiation Timeout Interval ....................................................... 1-8
1.2.5 Negotiating IP address using PPP .......................................................................... 1-8
1.2.6 Negotiating an DNS Address through PPP........................................................... 1-12
1.2.7 Configuring PPP Link Quality Control ................................................................... 1-13
1.2.8 Configuring PPP LCP to Negotiate MRU.............................................................. 1-13
1.3 Configuring MP ................................................................................................................ 1-14
1.3.1 Configuring MP on a Virtual Template Interface ................................................... 1-15
1.3.2 Configuring MP on an MP-Group Interface........................................................... 1-19
1.3.3 Configuring the Size of the MP Sort Window........................................................ 1-20
1.4 Configuring PPP Link Efficiency Mechanism................................................................... 1-20
1.4.1 Configuring IPHC .................................................................................................. 1-22
1.4.2 Configuring PPP Stac LZS Compression ............................................................. 1-24
1.4.3 Configuring VJ TCP Header Compression for PPP Packets................................ 1-24
1.4.4 Configuring Link Fragmentation and Interleaving on PPP .................................... 1-24
1.5 Displaying and Debugging PPP/MP/PPP Link Efficiency Mechanisms .......................... 1-25
1.6 PPP and MP Configuration Example............................................................................... 1-26
1.6.1 PAP Authentication ............................................................................................... 1-26
1.6.2 Unidirectional CHAP Authentication ..................................................................... 1-27
1.6.3 Bidirectional CHAP Authentication........................................................................ 1-29
1.6.4 MP Configuration................................................................................................... 1-30
1.6.5 Three Types of MP Binding Mode......................................................................... 1-32
1.7 Troubleshooting ............................................................................................................... 1-41
Chapter 2 PPPoE Configuration .................................................................................................. 2-1
2.1 Introduction to PPPoE ....................................................................................................... 2-1
2.2 PPPoE Server Configuration ............................................................................................. 2-2
2.2.1 Creating a Virtual Template .................................................................................... 2-3
2.2.2 Enabling/Disabling PPPoE Server .......................................................................... 2-3
2.2.3 Configuring PPPoE Server Parameters.................................................................. 2-4
2.2.4 Configuring PPPoE User Authentication................................................................. 2-4
2.3 Configuring PPPoE Client.................................................................................................. 2-4
2.3.1 Configuring a Dialer Interface ................................................................................. 2-5
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