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Glossary
GL-9
Cisco Access Registrar 3.5 Concepts and Reference Guide
OL-2683-02
VPN
Virtual Private Network is a way for companies to use the Internet to securely transport private data.
VRF
Virtual routing and forwarding. A per VPM routing table on the PE router. Each VPN instantiated on
that PE router has its own VRF.
X
X.25
A reliable public data network technology consisting of private virtual circuits, virtual calling, and
per-packet charging.
X.500
Defines the Directory Access Protocol (DAP) for clients to use when contacting directory servers. DAP
is a heavyweight protocol that runs over a full OSI stack and requires a significant amount of computing
resources to run.
V