H3C Technologies H3C SecBlade LB Cards User Manual
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Item Description
Scheduler
Select an algorithm that a real service group uses to distribute services and traffic:
•
Round Robin—Assigns new connections to each real service in turn.
•
Weighted Round Robin—Assigns new connections to real services based on
the weights of real services. A higher weight indicates more new connections
will be assigned.
•
Least Connections—New connections are always assigned to the real service
with the fewest number of active connections.
•
Weighted Least Connections—New connections are always assigned to the
real service with the fewest number of weighted active connections (the number
of active connections/weight).
•
Random—Assigns new connections to real services randomly.
•
Weighted Random—Assigns new connections randomly to real services based
on their weights. A higher weight indicates more new connections will be
assigned.
•
Source Address Hashing—Assigns a new connection to a specific real service
based on the source address of the connection. This algorithm make sure new
connections with the same source address can be assigned to the same real
service.
•
Source Address Port Hashing—Assigns a new connection to a specific real
service based on the source address and port of the connection. This algorithm
makes sure new connections with the same source address and port can be
assigned to the same real service.
•
Destination Address Hashing—Assigns a new connection to a specific real
service based on the destination address of the connection.
•
UDP Packet Load Hash—Assigns a new connection to a specific real service
based on the value of a specific field in the UDP packet payload. This algorithm
can make sure that new connections with the same UDP packet payload can be
assigned to the same real service.
•
Local Priority—Available real services with the same priority are assigned to a
subgroup. The real services are selected by subgroup according to the
specified minimum active real service number, and round robin scheduling is
performed among the selected real services. Suppose a real service group has
two real services with priority 10 and three real services with priority 5, and all
real services are available. If the minimum active real service number is 2, only
two real services with priority 10 participate in scheduling. If the minimum
active real service number is 3, the real services with both priority 10 and 5
participate in scheduling.
IMPORTANT:
Destination address hashing is applicable to firewall load balancing mode and other
algorithms are applicable to server load balancing.
Health Monitoring
Method
Select a health monitoring method that a real service group uses to monitor its real
services.
IMPORTANT:
The health monitoring method specified for the real service group takes effect for a
real service that has the same health monitoring method specified. Otherwise, the
health monitoring method specified for the real service takes effect.