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Version 7.00
Part No. NN46110-602
315900-E Rev 01
February 2007
Document status: Standard
600 Technology Park Drive
Billerica, MA 01821-4130
Nortel VPN Router
Troubleshooting
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2 Copyright © 2007 Nortel Networks. All rights reserved. The information in this document is subject to change without notice. The statements, configurations, technical data, and recommendations in this document are believed to be accurate and reliable, but are presented without express or implied warranty. Users must take full responsibility for their applications of any products specified in this document. The information in this document is proprietary to Nortel Networks. The software
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3 Portions of the code in this software product may be Copyright © 1988, Regents of the University of California. All rights reserved. Redistribution and use in source and binary forms of such portions are permitted, provided that the above copyright notice and this paragraph are duplicated in all such forms and that any documentation, advertising materials, and other materials related to such distribution and use acknowledge that such portions of the software were developed by the Unive
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4 3. Limitation of Remedies. IN NO EVENT SHALL NORTEL NETWORKS OR ITS AGENTS OR SUPPLIERS BE LIABLE FOR ANY OF THE FOLLOWING: a) DAMAGES BASED ON ANY THIRD PARTY CLAIM; b) LOSS OF, OR DAMAGE TO, CUSTOMER’S RECORDS, FILES OR DATA; OR c) DIRECT, INDIRECT, SPECIAL, INCIDENTAL, PUNITIVE, OR CONSEQUENTIAL DAMAGES (INCLUDING LOST PROFITS OR SAVINGS), WHETHER IN CONTRACT, TORT OR OTHERWISE (INCLUDING NEGLIGENCE) ARISING OUT OF YOUR USE OF THE SOFTWARE, EVEN IF NORTEL NETWORKS, ITS AGENTS OR SU
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5 Contents Preface . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Before you begin . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Text conventions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 17 Acronyms . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
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6 Contents Configuring SNMP traps to send notification when an IP address pool reaches the configured threshold . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 32 Chapter 2 Status and logging. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 35 Sessions . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .36 Reports . . . . . . . . . . . . . . .
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Contents 7 Using SFTP to transfer backup files . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 59 Stopping the transfer of backup files using SFTP . . . . . . . . . . . . . . . . . . . . . . 59 Disabling new logins . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Upgrading the software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 60 Checking available disk space . . . . .
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8 Contents System problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 96 Solving routing problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Client address redistribution problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 98 Solving firewall problems . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 99 Chapter 5 Pac
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Contents 9 Viewing a packet capture output file on a PC . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Installing Ethereal software . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 125 Saving, downloading, and viewing PCAP files . . . . . . . . . . . . . . . . . . . . . . . . . . 126 Viewing a PCAP file with Sniffer Pro . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 127 Deleting capture objects and disabling packet capture . .
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10 Contents Appendix B Using serial PPP . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 Establishing a serial PPP connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 165 Setting up a Dial-Up Networking connection . . . . . . . . . . . . . . . . . . . . . . . . . . . . 166 Setting up the modem . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 167 Setting up the VPN Router . . . . . .
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Contents 11 IPX client . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 223 Windows 95 and Windows 98 . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 Windows NT . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 IPX group configuration . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 224 Sample IPX VPN Router topology
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12 Contents NN46110-602
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13 Figures Figure 1 Admin > SNMP Traps window . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 33 Figure 2 Event logs . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 42 Figure 3 Capture and display filters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 43 Figure 4 Configure Display Entity . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 44 Figure 5 Recovery Diskette window . .
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14 Figures NN46110-602
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15 Tables Table 1 Field IDs for data collection records . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 40 Table 2 Troubleshooting tools . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 71 Table 3 Trap categories . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 149 Table 4 VPN Router traps MIB descriptions . . . . . . . . . . . . . . . . . . . . . . . . . . . . 150 Table 5 DIP switch configuration . . . . . . . . .
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16 Tables NN46110-602
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17 Preface This guide provides information about how to manage and troubleshoot the Nortel VPN Router. Before you begin This guide is for network managers who monitor and maintain the Nortel VPN Router. This guide assumes that you have experience with system administration and familiarity with network management. Text conventions This guide uses the following text conventions: angle brackets (< >) Indicate that you choose the text to enter based on the description inside the brackets. Do no
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18 Preface braces ({}) Indicate required elements in syntax descriptions where there is more than one option. You must choose only one of the options. Do not type the braces when entering the command. Example: If the command syntax is ldap-server source {external | internal}, you must enter either ldap-server source external or ldap-server source internal, but not both. brackets ([ ]) Indicate optional elements in syntax descriptions. Do not type the brackets when entering the command.
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Preface 19 vertical line ( | ) Separates choices for command keywords and arguments. Enter only one of the choices. Do not type the vertical line when entering the command. Example: If the command syntax is terminal paging {off | on}, you enter either terminal paging off or terminal paging on, but not both. Acronyms This guide uses the following acronyms: ADSL asynchronous digital subscriber line ARP Address Resolution Protocol ATM asynchronous transfer mode CA certificate authority CHA
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20 Preface L2TP Layer 2 Tunneling Protocol LAN local area network LDAP Lightweight Directory Access Protocol NAT Network Address Translation OSI Open Systems Interconnection OSPF Open Shortest Path First PAP Password Authentication Protocol PCAP packet capture PDN public data network POP point of presence PPP Point-to-Point Protocol PPTP Point-to-Point Tunneling Protocol RADIUS Remote Authentication Dial-In User Service RIP Routing Information Protocol SNMP Simple Network Management Protocol
