XGS-5240-Series User Manual
Table Of Contents
- Chapter 1 INTRODUCTION
- Chapter 2 INSTALLATION
- Chapter 3 witch Management
- Chapter 4 Basic Switch Configuration
- Chapter 5 File System Operations
- Chapter 6 Cluster Configuration
- Chapter 7 USB Function Configuration
- Chapter 8 Device Management
- Chapter 9 Port Configuration
- Chapter 10 Port Isolation Function Configuration
- Chapter 11 Port Loopback Detection Function Configuration
- Chapter 12 ULDP Function Configuration
- Chapter 13 LLDP Function Operation Configuration
- Chapter 14 Port Channel Configuration
- Chapter 15 MTU Configuration
- Chapter 16 bpdu-tunnel-protocol Configuration
- Chapter 17 DDM Configuration
- Chapter 18 EFM OAM Configuration
- Chapter 19 LLDP-MED
- Chapter 20 PORT SECURITY
- Chapter 21 QSFP+ Port Split and Combination Configuration
- Chapter 22 VLAN Configuration
- Chapter 23 MAC Table Configuration
- Chapter 24 MSTP Configuration
- Chapter 25 QoS Configuration
- Chapter 26 PBR Configuration
- Chapter 27 IPv6 PBR Configuration
- Chapter 28 Flow-based Redirection
- Chapter 29 Egress QoS Configuration
- Chapter 30 Flexible QinQ Configuration
- Chapter 31 Layer 3 Management Configuration
- Chapter 32 ARP Scanning Prevention Function Configuration
- Chapter 33 Prevent ARP, ND Spoofing Configuration
- Chapter 34 ARP GUARD Configuration
- Chapter 35 Gratuitous ARP Configuration
- Chapter 36 DHCP Configuration
- Chapter 37 DHCPv6 Configuration
- Chapter 38 DHCP option 82 Configuration
- Chapter 39 DHCPv6 option37, 38
- Chapter 40 DHCP Snooping Configuration
- Chapter 41 DHCP option 60 and option 43
- Chapter 42 IPv4 Multicast Protocol
- Chapter 43 IPv6 Multicast Protocol
- Chapter 44 Multicast VLAN
- Chapter 45 ACL Configuration
- Chapter 46 Self-defined ACL Configuration
- Chapter 47 802.1x Configuration
- 47.1 Introduction to 802.1x
- 47.2 802.1x Configuration Task List
- 47.3 802.1x Application Example
- 47.4 802.1x Troubleshooting
- Chapter 48 The Number Limitation Function of MAC and IP in Port, VLAN Configuration
- 48.1 Introduction to the Number Limitation Function of MAC and IP in Port, VLAN
- 48.2 The Number Limitation Function of MAC and IP in Port, VLAN Configuration Task Sequence
- 48.3 The Number Limitation Function of MAC and IP in Port, VLAN Typical Examples
- 48.4 The Number Limitation Function of MAC and IP in Port, VLAN Troubleshooting Help
- Chapter 49 Operational Configuration of AM Function
- Chapter 50 Security Feature Configuration
- 50.1 Introduction to Security Feature
- 50.2 Security Feature Configuration
- 50.2.1 Prevent IP Spoofing Function Configuration Task Sequence
- 50.2.2 Prevent TCP Unauthorized Label Attack Function Configuration Task Sequence
- 50.2.3 Anti Port Cheat Function Configuration Task Sequence
- 50.2.4 Prevent TCP Fragment Attack Function Configuration Task Sequence
- 50.2.5 Prevent ICMP Fragment Attack Function Configuration Task Sequence
- 50.3 Security Feature Example
- Chapter 51 TACACS+ Configuration
- Chapter 52 RADIUS Configuration
- Chapter 53 SSL Configuration
- Chapter 54 IPv6 Security RA Configuration
- Chapter 55 VLAN-ACL Configuration
- Chapter 56 MAB Configuration
- Chapter 57 PPPoE Intermediate Agent Configuration
- Chapter 58 SAVI Configuration
- Chapter 59 Captive Portal Authentication
- 59.1 Captive Portal Authentication Configuration
- 59.2 Accounting Function Configuration
- 59.3 Free-resource Configuration
- 59.4 Authentication White-list Configuration
- 59.5 Automatic Page Pushing after Successful Authentication (it is not supported currently)
- 59.6 http-redirect-filter
- 59.7 Portal Non-perception
- 59.8 Portal Escaping
- Chapter 60 VRRP Configuration
- Chapter 61 IPv6 VRRPv3 Configuration
- Chapter 62 MRPP Configuration
- Chapter 63 ULPP Configuration
- Chapter 64 ULSM Configuration
- Chapter 65 Mirror Configuration
- Chapter 66 RSPAN Configuration
- Chapter 67 SNTP Configuration
- Chapter 68 NTP Function Configuration
- Chapter 69 DNSv4/v6 Configuration
- Chapter 70 Summer Time Configuration
- Chapter 71 Monitor and Debug
- Chapter 72 Reload Switch after Specified Time
- Chapter 73 Debugging and Diagnosis for Packets Received and Sent by CPU
- Chapter 74 VSF
- Chapter 75 SWITCH OPERATION
- Chapter 76 TROUBLESHOOTING
- Chapter 77 APPENDIX A
- Chapter 78 GLOSSARY
Configuration Guide of XGS-5240-Series
57-1
Chapter 57 PPPoE Intermediate Agent
Configuration
57.1 Introduction to PPPoE Intermediate Agent
57.1.1
Brief Introduction to PPPoE
PPPoE (Point to Point Protocol over Ethernet) is a protocol that apply PPP protoco
l to Ethernet. PPP protocol is a link layer protocol and supply a communication method
of point-to-point, it is usually selected by host dial-up link, for example the link is line
dial-up. PPP protocol is applied to Ethernet that means PPPoE protocol makes many h
osts of Ethernet to connect a remote access collector through one or multiple bridge d
evices. If the remote access collector is broadband access server (BAS), it can supply
broadband access and accounting functions for these hosts, so PPPoE protocol is used
to broadband access authentication of Ethernet usually.
57.1.2 Introduction to PPPoE IA
Along with broadband access technique is rapidly developed, broadband access net
work is also developing from strength to strength, but security problem gradually becom
es the focus, soever the clients or the access device and the network are faced with s
ecurity problem (especially from the client) in the current access network. Traditional Et
hernet user can not be identified, traced and located exactly, however in exoteric and c
ontrollable network, identification and location are the basic character and requirement f
or user, for example, when supplying the application that use user accounts to login, th
is method supplied by PPPoE Intermediate Agent can availably avoid user accounts em
bezzled.
There are two stages for PPPoE protocol work: discovery stage and session stage.
Discovery stage is used to obtain MAC address of the remote server to establish a p
oint-to-point link and a session ID with the server, and session stage uses this session
ID to communicate. PPPoE Intermediate Agent only relates to discovery stage, so we
simply introduce discovery stage.
There are four steps for discovery stage:
1. Client sends PADI packet: The first step, client uses broadcast address as des
tination address and broadcast PADI (PPPoE Active Discovery Initiation) packet
to discover access collector in layer 2 network. Notice: This message may be