R3303-HP HSR6800 Routers Layer 2 - WAN Configuration Guide

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If an HDLC link bundle does not contain any selected member interfaces, the HDLC link bundle interface
is brought down, and cannot forward traffic. It will not be brought up and forward traffic until selected
member interfaces are detected in the HDLC link bundle. The bandwidth of an HDLC link bundle is the
total bandwidth of all selected member interfaces.
Load balancing modes
An HDLC link bundle forwards traffic through its selected member interfaces. When multiple selected
member interfaces exist in an HDLC link bundle, the device chooses some of the selected member
interfaces to forward traffic according to its load balancing mode.
The router supports per-flow load balancing, where packets of the same flow are forwarded on the same
selected member interface. A flow is identified by two tuples (source IP address and destination IP
address).
Configuring an HDLC link bundle interface
When you configure an HDLC link bundle interface, follow these guidelines:
• The number of selected member interfaces required for bringing up an HDLC link bundle cannot be
greater than the maximum number of selected member interfaces in the HDLC link bundle.
• To guarantee correct traffic transmission, HP recommends that you configure each of the following
parameters the same at both ends of an HDLC link bundle:
{ Number of selected member interfaces required for bringing up the HDLC link bundle.
{ Maximum number of selected member interfaces allowed in the HDLC link bundle.
{ Minimum amount of bandwidth required for bringing up the HDLC link bundle.
• If the member interfaces in an HDLC link bundle are on different cards, HP recommends that you
use the service slot command to specify a card to forward traffic for the HDLC link bundle interface.
• Do not specify the MPU to forward traffic for HDLC link bundle interfaces. All traffic must be
forwarded on base cards.
To configure an HDLC link bundle interface:
Ste
p
Command Remarks
1. Enter system view.
system-view N/A
2. Create an HDLC link bundle
interface and enter its view.
interface hdlc-bundle bundle-id
N/A
3. Assign an IP address to the
HDLC link bundle interface.
ip address ip-address { mask |
mask-length } [ sub ]
By default, no IP address is
assigned to an HDLC link bundle
interface.
For more information about the ip
address command, see Layer 3—IP
Services Command Reference.
4. Configure the load balancing
mode for the HDLC link bundle
interface.
bundle load-balance { per-flow
| per-packet }
Optional.
By default, per-packet load
balancing is used.