HP VPN Firewall Appliances High Availability Configuration Guide

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Table 23 Configuration items
Item Remarks
Logical Link Group Name Logical link group name, which uniquely identifies a logical link group.
Scheduler
A scheduling algorithm that a logical link group uses to distribute traffic.
• Round Robin—Assigns new connections to each logical link in turn.
• Weighted Round Robin—Assigns new connections to each logical link
based on the weights of logical links; a higher weight indicates more new
connections will be assigned.
• Least Connections—New connections are always assigned to the logical
link with the fewest number of active connections.
• Weighted Least Connections—New connections are always assigned to
the logical link with the fewest number of weighted active connections (the
number of active connections/weight).
• Random—Assigns new connections to logical links randomly.
• Weighted random—Assigns new connections randomly to logical links
based on their weights; a higher weight indicates more new connections
will be assigned.
• Source Address Hashing—Assigns a new connection to a specific logical
link based on the source address of the connection. This algorithm makes
sure new connections with the same source address can be assigned to the
same logical link.
• Source Address Port Hashing—Assigns a new connection to a specific
logical link based on the source address and source port of the
connection. This algorithm make sure new connections with the same
source address and port can be assigned to the same logical link.
• Destination Address Hashing—Assigns a new connection to a specific
logical link based on the destination address of the connection. This
algorithm make sure new connections with the same destination address
can be assigned to the same logical link.
• Weighted Bandwidth—Assigns new connections to each logical link
based on the product of the available bandwidth of the current physical
link and the weights of logical links. A higher product value indicates more
new connections will be assigned.
• Max Bandwidth—Assigns new connections to logical links that have
greatest physical link available bandwidth.
• Local Priority—Available logical links with the same priority are assigned
to a subgroup. The logical links are selected by subgroup according to the
specified minimum active logical link number, and scheduling is
performed among the selected logical links. Suppose a logical link group
has two logical links with priority 10 and three logical links with priority 5,
and all logical links are available. If the minimum active logical link
number is 2, only two logical links with priority 10 participate in
scheduling. If the minimum active logical link number is 3, the logical links
with both priority 10 and 5 participate in scheduling.
Minimum Active Logical Link
Service Number
Specify the minimum number of active logical links to participate in
scheduling when you select Local Priority for Scheduler.