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Frame Relay Services
Frame Relay in the Intel
Express 8100 Router
Frame Relay
Features
Frame Relay is available in the Express 8100 Router with Frame Relay. The
WAN port must be configured as a Frame Relay port before it can be used for
Frame Relay services.
As Frame Relay uses Permanent Virtual Circuits, a number of Frame Relay links
can be made via the same Frame Relay port. The Intel Express 8100 Router sup-
ports up to 5 Frame Relay links.
This chapter gives an introduction to Frame Relay services in the Intel Express
8100 Router.
Frame Relay is an interface specification that provides a signalling and data
transfer mechanism between endpoints (routers) and the network (switches).
Data to be transmitted are encapsulated according to the Multiprotocol Encapsu-
lation Implementation Agreements of the Frame Relay Forum. It provides effi-
cient network services and accommodates burst-intensive applications over wide
area LAN interconnections at rates up to 2.048 Mbps. Frame Relay provides
bandwidth on demand and allows multiple simultaneous data sessions (logical
channels) across a physical Frame Relay port.
Frame Relay can be very cost-effective when used to interconnect several sites.
Frame Relay allows several logical links to different sites across one physical
Frame Relay port.
Features of the Frame Relay protocol include:
Provides a connection-oriented service
Maintains data sequence
Connects end-systems at data link layer
uses variable length packets
no data link control, no retransmissions
makes use of LAPF core functions
standard multiprotocol encapsulation
reduced costs for internetworking in large networks
Chapter 3
17
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