Table of Contents
Advertisement
1483 encapsulation. A brief explanation of these two encapsulation
methods follows.
Point-to-Point Protocol (PPP)
PPP is a single or multi-link interface between two packet switching
devices, such as a bridge or router. PPP has built-in negotiation for
addresses and connection parameters and can route multiple protocols over
a single link. One benefit of using PPP is it offers interoperability of
multi-vendor equipment as well as support for dynamic configuration
between the connecting devices.
RFC 1483
Request for Comment (RFC) 1483 is an interoperability specification set
by the Internet Engineering Task Force (IETF) that outlines methods for
multiprotocol encapsulation over ATM. RFC 1483 describes two
encapsulation methods for carrying network interconnect traffic over ATM
Adaptation Layer 5 (AAL5): Logical Link Control (LLC)/SNAP
encapsulation and VC multiplexing.
By default, the router uses the first method, LLC Encapsulation, which
allows multiplexing of multiple protocols over a single ATM virtual
circuit. The second method, VC multiplexing, uses a separate VC for each
carried protocol.
This unit supports two types of 1483 encapsulation: routed and bridged.
RFC 1483 Routed encapsulation operates at the IP layer and will route
only IP packets. RFC 1483 bridged encapsulation is supported only when
the unit is operating in bridge mode.
Dynamic Host Configuration
Protocol (DHCP)
The router provides two user-configurable Dynamic Host Configuration
Protocol (DHCP) modes:
DHCP server (enabled by default from the factory)
•
DHCP relay agent
•
Efficient Networks, Inc.
Technical Concepts
31
Advertisement
Table of Contents
