Load Balancing Modes; Command And Hardware Compatibility - HP MSR Router Series Wan Access Configuration Manual

The first N member interfaces enter the Selected state, and the remaining (M-N) member
interfaces enter the Ready state.
5. For example, the number of member interfaces meeting the conditions for being Selected is P. The
minimum number of Selected interfaces required for bringing up the HDLC link bundle is set to Q.
The P interfaces will be Selected when any of the following conditions exist:
P is not smaller than Q.
The following limits are not set:
−
−
None of the P member interfaces will be Selected and they all stay in the Ready state when any of
the following conditions exist:
P is smaller than Q.
The total bandwidths of the P member interfaces is smaller than the minimum bandwidth
required for bringing up the HDLC link bundle.

Load balancing modes

An HDLC link bundle forwards traffic through its Selected interfaces. When multiple Selected interfaces
exist in an HDLC link bundle, the device chooses the Selected interfaces to forward traffic according to
its load balancing mode.
The following load balancing modes are available:
Per-flow load balancing—Forwards packets of the same flow out of the same Selected interface. A
•
flow is identified by match criteria.
For IPv4 and IPv6 packets, the match criteria include source IP address and destination IP
address.
For MPLS packets, the match criteria are MPLS labels.
Per-packet load balancing—Distributes packets evenly across all Selected interfaces by using the
•
round-robin method.

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.
•
Commands and descriptions for distributed devices apply to MSR4060 and MSR4080 routers.
Minimum number of Selected interfaces required for bringing up the HDLC link bundle.
Minimum bandwidth required for bringing up the HDLC link bundle.
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