Configuring HDLC
Overview
High-level Data Link Control (HDLC) is a bit-oriented link layer protocol. HDLC can transmit any
types of bit stream transparently.
HDLC supports only point-to-point link and does not support point-to-multipoint link.
HDLC supports neither IP address negotiation nor authentication. It uses keepalives to check link
status.
HDLC works only on synchronous interfaces or synchronous/asynchronous interfaces in
synchronous mode. HDLC is supported by serial interfaces that operate in synchronous mode and
POS interfaces.
Compatibility information
Feature and hardware compatibility
This feature is supported only on Layer 2 Ethernet ports on the following modules:
•
CE3.
•
CPOS.
•
CT3.
•
E1.
•
E1-F.
•
POS.
•
SAE.
•
T1.
•
T1-F.
Command and hardware compatibility
Commands and descriptions for centralized devices apply to the following routers:
•
MSR1002-4/1003-8S.
•
MSR2003.
•
MSR2004-24/2004-48.
•
MSR3012/3024/3044/3064.
•
MSR954(JH296A/JH297A/JH298A/JH299A/JH373A)
•
MSR958(JH300A/JH301A)
Commands and descriptions for distributed devices apply to MSR4060 and MSR4080 routers.
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