Configuring Hdlc Link Bundling; Overview; Basic Concepts; States Of Member Interfaces - HPE FlexNetwork MSR series Configuration Manual

Configuring HDLC link bundling

Overview

HDLC link bundling bundles multiple interfaces using HDLC encapsulation (also known as HDLC
interfaces) together to form one logical link.
HDLC link bundling delivers the following benefits:
•
Load balancing—Incoming/outgoing traffic is distributed across multiple HDLC link bundle
member interfaces.
•
Increased bandwidth—The bandwidth of the HDLC link bundle interface is the total bandwidth
of all available member interfaces.
•
Improved connection reliability—When a member interface goes down, the traffic on it
automatically switches over to other available member interfaces. This avoids service
interruption and improves the connection reliability of the whole HDLC link bundle.

Basic concepts

HDLC link bundle interface
An HDLC link bundle interface is a logical interface comprising a bundle of HDLC links.
HDLC link bundle
An HDLC link bundle is a group of HDLC interfaces. When you create an HDLC link bundle interface,
an HDLC link bundle numbered the same as the HDLC link bundle interface is automatically
generated.
Member interface
An interface assigned to an HDLC link bundle is called an HDLC link bundle member interface. Only
POS interface and serial interfaces with HDLC encapsulation enabled can be assigned to an HDLC
link bundle.
Member interfaces in an HDLC link bundle use the configuration on the HDLC link bundle interface to
process Layer 3 services. All layer 3 service settings on the member interfaces, including the IP
address, are void when the interfaces are assigned to the HDLC link bundle.
NOTE:
Interfaces of different types can be assigned to an HDLC link bundle.

States of member interfaces

An HDLC link bundle member interface can be in one of the following states:
•
Initial—The member interface is down at the link layer.
•
Negotiated—The member interface is as follows:
Up at the link layer.

Does not meet the conditions for being a Selected interface in the HDLC link bundle.

•
Ready—The member interface is as follows:
Up at the link layer.

Meets the conditions for being a Selected interface.

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