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vii
Cisco Secure Router 520 Series Software Configuration Guide
OL-14210-01
Saving Configuration Changes A-6
Summary A-7
Where to Go Next A-7
APPENDIX
B Concepts B-1
ADSL B-1
Network Protocols B-2
IP B-2
Routing Protocol Options B-2
RIP B-2
PPP Authentication Protocols B-3
PAP B-3
CHAP B-3
TACACS+ B-4
Network Interfaces B-4
Ethernet B-4
ATM for DSL B-4
PVC B-5
Dialer Interface B-5
NAT B-5
Easy IP (Phase 1) B-6
Easy IP (Phase 2) B-6
QoS B-7
IP Precedence B-7
PPP Fragmentation and Interleaving B-7
CBWFQ B-8
RSVP B-8
Low Latency Queuing B-8
Access Lists B-9
CHAPTER
C ROM Monitor C-1
Entering the ROM Monitor C-1
ROM Monitor Commands C-2
Command Descriptions C-3
Disaster Recovery with TFTP Download C-3
TFTP Download Command Variables C-4
Required Variables C-4