Eicon Networks Eicon 1550, Руководство пользователя

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Web Interface Settings Glossary 111
Protocol Menu (VHSI Tree) (Frame Relay)
These parameters are only available when the protocol is set to Frame Relay.
Local management interface
Defines the Local Management Interface (LMI) protocol supported on the network. LMI
is a protocol and associated procedures operating on the local interface between the
machine user and the network. LMI provides management of Data Link Connection
Identifiers (DLCI), which have their endpoints and bearer capabilities defined at
subscription time. Pre-ANSI LMI is older, and ANSI T1.617 Annex D is newer.
Networks usually support one or the other.
• ANNEXA: ITU-T Q.933 Annex A
• ANNEXD: ANSI T1.617 Annex D Local In-channel Signaling.
• AUTOLMI: Automatically detects which LMI protocol is in use, in the following order:
Annex D, LMI, Annex A, None.
• LMI: Pre-ANSI LMI protocol.
• NONE: No LMI protocol selected. If LMI is set to none, you are not required to
configure the settings LMIN1, LMIN2, LMIN3, and LMIT1.
Default: AUTOLMI.
Maximum number of DLCI (P1)
Defines the maximum number of Permanent Virtual Connections (analogous to X.25
PVCs) that can be active simultaneously. Once allocated, each DLCI can be changed
to reflect the DLCI assigned at subscription time.
Range: 1-8.
Default: 5.
Information field size (dN1)
Defines the maximum number of bytes of user data that can be contained in a Frame
Relay frame.
Range: 19-4096.
Default: 1514.