Avaya Configuring Frame Relay Services Manuel d'utilisateur Page 33

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Frame Relay Overview
117376-B Rev. 00 2-7
DLCMI supports three standard data link management specifications: LMI, ANSI
T1.617 Annex D, and CCITT (now ITU-T) Q.933 Annex A.
The networking industry first developed the Local Management Interface
(LMI) specification. The LMI approach is asymmetric; the router sends a
status-inquiry message to the network, signaling that the router’s connection
to the network is functioning. The network replies with a status response.
ANSI modified the LMI specification and incorporated it as Annex D to ANSI
standard T1.617. The ANSI method is generally similar to the LMI approach.
The CCITT (now ITU-T) modified the ANSI standard and adopted it as
Annex A to Q.933. The CCITT Annex A specification is similar to Annex D,
but it uses an international numbering scheme.
Be sure to configure the frame relay interface on the router to use the same
management protocol as the switched network to which it is connected. For
information about configuring frame relay, see Cha
pter 3, “Customizing Frame
Relay.”
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