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Preface 19
Nortel VPN Router Troubleshooting
Acronyms
This guide uses the following acronyms:
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.
ADSL
asynchronous digital subscriber line
ARP
Address Resolution Protocol
ATM
asynchronous transfer mode
CA
certificate authority
CHAP
Challenge Handshake Authentication Protocol
CMP Internet Control Message Protocol
DHCP Dynamic Host Configuration Protocol
DNS Domain Name System
FTP File Transfer Protocol
HTTP Hypertext Transfer Protocol
ICMP Certificate Management Protocol
IKE IPsec Key Exchange
IP Internet Protocol
IPsec IP Security
IPX Internetwork Packet Exchange
ISDN BRI integrated services digital network basic-rate
interface
ISP Internet service provider
L2F Layer 2 Forwarding