Avaya Configuring and Troubleshooting Bay Dial VPN (DVS) Networks Manual de usuario Pagina 168
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Configuring and Troubleshooting Bay Dial VPN Services
C-26 302272-A Rev. 00
Mar 16 15:26:32 bay_lac ppp[1321]: ppp:asy23:l2tp tunnel call established,
forwarding traffic to remote node
Mar 16 15:26:32 bay_lac ppp[1321]: ppp:asy23:PPP Forward PAP
Mar 16 15:26:34 bay_lac radlog[1376]: Sent RADIUS Accounting-Request to
132.245.54.20
Mar 16 15:26:34 bay_lac radlog[1376]: Received RADIUS Accounting-Response
from 132.245.54.20
Once the tunnel has been established, an entry is placed in the RAC’s Tunnel
Table, as the following example illustrates.
annex: net -T
Layer 3 BayDVS
Dev Proto State When Home Address HA Address Type WAN
Addr
Layer 2 L2TP
Remote Ids Local Ids
Dev State When End Pnt Address Serial Num Tunnel Call Tunnel
Call
asy23 EST 3:26pm 132.245.56.6 0x6c070000 24708 1 32951
32790
If the dial-in user is having problems establishing a connection, try to isolate the
problem by determining the point at which the protocol is failing. The sequence of
events from the LAC’s perspective appears in the following table.
Troubleshooting the LNS
Before the tunnel and session is established the LNS should be in the up state. You
should see the following message.
[2:1]$ log -eL2TP -fftwi
Event What to check
LAC accepts call syslog, callhist and actcall commands on
RAS
Queries BSAC/TMS Database and
receives successful response
syslog, BSAC Statistics screen, BSAC
Activity logs
LAC contacts LNS to establish a tunnel if
one doesn’t already exist.
syslog
LAC forwards PPP datagrams to LNS to
establish session for dial-in user.
Syslog, shows PPP activity
- Configuring and 1
- Troubleshooting Bay Dial 1
- VPN Services 1
- Trademarks 2
- Restricted Rights Legend 2
- Statement of Conditions 2
- Contents 5
- 302272-A Rev. 00 vii 7
- 302272-A Rev. 00 ix 9
- 302272-A Rev. 00 xi 11
- 302272-A Rev. 00 13
- About This Guide 15
- Conventions 16
- Acronyms 17
- Bay Networks Customer Service 19
- How to Get Help 19
- Chapter 1 21
- Tunneling Overview 21
- What Is Tunneling? 22
- Layer 3 Tunneling 24
- Layer 2 Tunneling 24
- DVS0012A 26
- Dial VPN Network Components 27
- 1-8 302272-A Rev. 00 28
- 1-10 302272-A Rev. 00 30
- 1-12 302272-A Rev. 00 32
- Where to Go Next 34
- Chapter 2 35
- Dial VPN Layer 2 Tunneling 35
- 2-2 302272-A Rev. 00 36
- L2T0003A 36
- 302272-A Rev. 00 2-3 37
- L2TP Packet Encapsulation 38
- 2-6 302272-A Rev. 00 40
- Security in an L2TP Network 41
- 2-8 302272-A Rev. 00 42
- RADIUS User Authentication 43
- RADIUS Accounting 44
- L2TP IP Interface Addresses 44
- Starting an L2TP Session 45
- Examples of L2TP Tunnels 46
- 302272-A Rev. 00 2-13 47
- 2-14 302272-A Rev. 00 48
- Chapter 3 49
- Dial VPN Layer 3 Tunneling 49
- 3-2 302272-A Rev. 00 50
- DVS0001A 50
- 302272-A Rev. 00 3-3 51
- How Tunnel Management Works 52
- How the TMS Database Works 54
- How DHCP Works 55
- shows the entire process 56
- Assigning Addresses 58
- Starting the Connection 60
- 3-14 302272-A Rev. 00 62
- 3-16 302272-A Rev. 00 64
- 3-18 302272-A Rev. 00 66
- DVS0007A 66
- Chapter 4 69
- 4-2 302272-A Rev. 00 70
- <acp or RADIUS> 71
- 4-4 302272-A Rev. 00 72
- 302272-A Rev. 00 4-5 73
- 4-6 302272-A Rev. 00 74
- Configuring Active RIP 75
- Chapter 5 77
- Tunnel Management Commands 80
- Command Arguments 81
- 5-12 302272-A Rev. 00 88
- 0013ABC0:001234560000 88
- Chapter 6 89
- 6-2 302272-A Rev. 00 90
- 302272-A Rev. 00 6-3 91
- DVS0015A 91
- Using RADIUS Accounting 92
- RADIUS server 93
- Chapter 7 99
- 7-2 302272-A Rev. 00 100
- 302272-A Rev. 00 7-3 101
- 7-4 302272-A Rev. 00 102
- Gateway Accounting Messages 103
- Chapter 8 105
- DVS0008A 106
- 8-2 302272-A Rev. 00 106
- 302272-A Rev. 00 8-3 107
- (continued) 108
- 302272-A Rev. 00 8-7 111
- 8-8 302272-A Rev. 00 112
- 302272-A Rev. 00 8-9 113
- Enabling L2TP 117
- Configuration is completed 118
- (continued) 121
- 8-18 302272-A Rev. 00 122
- field, which by 123
- Creating a Superscope 125
- Chapter 9 127
- Managing a Dial VPN Network 127
- 9-2 302272-A Rev. 00 128
- Appendix A 129
- Planning Worksheet 129
- A-2 302272-A Rev. 00 130
- For Each Destination Site 131
- For Each Remote Node 132
- Appendix B 133
- Syslog Messages 133
- TMS Syslog Messages 136
- Appendix C 143
- Troubleshooting 143
- Preventing Problems 144
- Preparing to Troubleshoot 145
- Troubleshooting Worksheet 146
- 302272-A Rev. 00 C-5 147
- Troubleshooting and Testing 148
- Cable Guide 148
- C-8 302272-A Rev. 00 150
- Caution: Avoid using the 151
- Caution: 152
- 302272-A Rev. 00 C-11 153
- C-12 302272-A Rev. 00 154
- 302272-A Rev. 00 C-13 155
- C-14 302272-A Rev. 00 156
- Managing 161
- Remote Access Concentrators 161
- Using Command Line Interfaces 161
- Managing Remote 163
- Access Concentrators Using 163
- Command Line Interfaces 163
- C-22 302272-A Rev. 00 164
- DVS0005A 165
- C-24 302272-A Rev. 00 166
- Troubleshooting the LAC 167
- Troubleshooting the LNS 168
- C-32 302272-A Rev. 00 174
- Glossary 175
- Glossary-6 302272-A Rev. 00 180
- Tunnel Management 180
- System (TMS) 180
- Virtual Private 180
- Network (VPN) 180
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