Radware Alteon Application Manual page 709

• Geographical preference—Causes the GSLB-enabled Alteon to select the server based on the
same IANA region of the source IP address and the server IP address. This metric does not
require remote site updates.
You can use the
/info/slb/gslb/geo
are mapped to each region. The regions are as follows:
— North America
— South America
— Europe
— Caribbean
— Pacific Rim
— Sub-Sahara
— Japan
• Network preference—Selects the server based on the preferred network of the source IP
address. This metric does not require remote site updates.
• Weighted least connections—Selects the server based on which server has the lowest session
utilization. Session utilization is the percentage of sessions used over total sessions, which
results in normalized sessions between servers. A server whose session utilization is 100% is
considered unavailable. This metric requires remote site updates.
• Weighted response time—Selects the server based on the lowest response time in
milliseconds from an SLB health check of the servers. This metric requires SLB health checks
and remote site updates.
• Weighted round-robin—Selects the server based on round-robin of the servers.
• Weighted random—Selects the server based on uniform random distribution of the servers.
• Availability—Selects the same server while the server is still available. If the same server is not
available, this metric selects the next server based on a ranking of the local virtual server and
remote real server in a list from the highest (48) to the lowest (1) ranking. Multiple servers can
have the same priority. This metric allows servers to be grouped based on priorities, or into
primary and secondary groups. This metric requires SLB health checks and remote site updates.
This is discussed in further detail in
• Quality of service—Selects the server based on combination of the lowest session utilization
and the lowest response time of the SLB health check of the servers. This metric requires SLB
health checks and remote site updates.
• Minmisses—Selects the same server based on the hash of source IP address and domain
name. The hash calculation uses all the servers that are configured for the domain irrespective
of the state of the server. When the server selected is not available, minmisses selects the next
available server.
• Hashing—Selects the same server based on the hash of source IP address and domain name.
The hash calculation uses only the servers that are available for the domain. The server selected
may be affected when a server becomes available or not available, since the hash calculation
uses only the servers that are available.
• DNS local—Selects the local virtual server only when the local virtual server is available. This
metric applies to DNS-based GSLB only.
• DNS always—Selects the local virtual server even though the local virtual server is not
available. This metric applies to DNS-based GSLB only.
• Remote—Selects the remote real servers only.
• Persistence—Selects the server for which the persistency cache contains the client IP address
and subnet mask.
Document ID: RDWR-ALOS-V2900_AG1302
Alteon Application Switch Operating System Application Guide
command to obtain a list of the IP address ranges that
GSLB Availability Persistence, page
Global Server Load Balancing
710.
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