2004年运营商对IPMPLS的支撑网和VPN的看法调查报告(2004 Survey of Carrier Attitudes Toward IPMPLS Backbones and VPNs)

I. INTRODUCTION
　　1.1 Survey Objectives
　　1.2 Survey Focus
　　　　a. Layer 3 IP/MPLS VPNs
　　　　b. Ethernet Services
　　　　c. Frame Relay
　　　　d. Private Circuits

II. ABOUT THE SURVEY
　　2.1 Survey Questions
　　2.2 About the Respondents
　　2.3 Demographic Breakouts Used in This Report

III. KEY FINDINGS

IV. RESPONDENT COMMENTS

V. SURVEY RESULTS
　　5.1 Attitudes Toward VPNs
　　5.2 Offered Services
　　5.3 Private Circuits
　　5.4 Frame Relay
　　5.5 Ethernet Services
　　5.6 Layer 3 IP/MPLS VPNs

APPENDICES
　　A1 Methodology
　　A2 Legal Disclaimer