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.