Brocade Virtual ADX Graphical User Interface Guide (Supporting ADX v03.1.00) - Manual (Page 78)

66 Brocade Virtual ADX Graphical User Interface Guide
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Global traffic settings
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3. For the Basic settings, provide the following information:
• Load Balancing Predictor: Select the algorithm to determine the traffic distribution among
the real servers. The algorithm can be one of the following:
• None — No load balancing predictor is selected.
• Least Connections — Sends the request to the real server that currently has the fewest
active connections with clients.
• Round Robin — Directs the service requests to the next server if a server fails, and
treats all servers equally regardless of the number of connections.
• Weighted — Distributes the service requests by allocating all the required connections
sequentially to the servers with a higher weight value first.
• Enhanced Weighted — Distributes the service requests by allocating all the required
connections sequentially to the servers until each real server has connections equal
to its assigned weight.
• Weighted Round Robin — Schedules a proportional share of the bandwidth when all
servers are active, and redistributes bandwidth if the bandwidth has been reserved by
an inactive real server.
• Weighted Round Robin Static — Distributes the service requests based on a
configured weight value and system capacity.
• Response Time — Distributes the service requests among real servers based on a
dynamic weight value derived from the response time of health check packets.
• TCP Age: Specify the number of minutes the Brocade Virtual ADX allows a TCP connection
to remain inactive before closing the connection. The range is from 2 through 60 minutes.
The default is 30 minutes.
• UDP Age: Specify the number of minutes the Brocade Virtual ADX allows a UDP connection
to remain inactive before closing the connection. The range is from 2 through 60 minutes.
The default is 5 minutes.
• Sticky Age: Specify the number of minutes a sticky server connection can remain inactive
before aging out. The range is from 2 through 60 minutes. The default is 5 minutes.
• Clock Scale: Enter a value to adjust the clock scale for configurations that require TCP or
UDP timeouts longer than the maximum value. The range is from 1 through 24. The default
is 1. For example, when you set the clock scale to 2, then a TCP age of 60 minutes would
be equivalent to 120 minutes.
• Source NAT: Select Enable check box to globally enable the source NAT on the real servers.
• Reassign Threshold: Select Enable check box to enable the reassign threshold (default
setting). Enter the SYN ACK threshold that specifies the number of contiguous
unacknowledged SYN ACKs accumulated for a real server, before determining that the real
server is inactive. The range is from 6 through 4000. The default is 20.
• Force Deletion: Select Enable check box to force the existing SLB connections to be
terminated within two minutes. By default, when a service is disabled or deleted, the
Brocade Virtual ADX does not send new connections to the real servers for that service.
However, the Brocade Virtual ADX does allow existing connections to complete normally,
however long that takes.
• Track Group Unbind Wait All: Select Enable check box to allow track ports in a track port
group to unbind gracefully after the unbinding of the track group lead port. By default,
when you unbind a port that is the lead port in a track port group, all the ports that track
the lead port also are immediately unbound.