[Real Server 1 Menu] health - Set specific health check for this server adv - Real Server Advanced Menu layer7 - Layer 7 Command Menu ids - IDS Command Menu thrsh - thrsh Command Menu type - Set real server type ipver - Set IP version rip - Set IP addr of real server name - Set real server name weight - Set weight for real server maxcon - Set maximum number of connections tmout - Set minutes inactive connection remains open backup - Set backup real server preempt - Enable/Disable backup preemption inter - Set interval between health checks retry - Set number of failed attempts to declare server DOWN restr - Set number of successful attempts to declare server UP overflo - Enable/Disable backup on overflow addport - Add real port to server remport - Remove real port from server downbw - Set the WAN Link download bandwidth limit upbw - Set the WAN Link upload bandwidth limit ena - Enable real server dis - Disable real server shut - Shutdown real server del - Delete real server cur - Display current real server configuration |
Command Syntax and Usage | |
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health <health check id|inherit|NoCheck> | |
Sets a health check for this server. Values: ![]() ![]() ![]() Note: Setting a specific health check for a server overrides the group health check settings. | |
adv | |
Displays the Real Server Advanced menu. To view this menu, see /cfg/slb/real/adv Real Server Advanced Menu. | |
layer7 | |
Displays the Real Server Layer 7 menu. To view this menu, see /cfg/slb/real <server number>/layer7 Real Server Layer 7 Configuration. | |
ids | |
Displays the Real Server IDS (Intrusion Detection System) menu. To view this menu, see /cfg/slb/real <real server ID>/ids Real Server IDS Configuration Menu. | |
thrsh | |
Displays the Real Server Threshold menu for setting a threshold per group for the number of concurrent connections. To view this menu, see /cfg/slb/real <real server ID>/thrsh Real Server Threshold Menu. | |
type | |
Sets the real server type. Values: local, remote, wanlink. | |
ipver <v4 | v6> | |
Sets the IP version of the real server. | |
rip <real server IP address> | |
Sets the IP address of the real server. The format of the IP address depends on the IP version specified using the ipver command. When using this command, the address entered is pinged to determine if the server is up, and the administrator is warned if the server does not respond. | |
name <string, maximum 128 characters> |none | |
Defines an alias for each real server. This lets the network administrator quickly identify the server by a natural language keyword value. Values: 1-128 characters | |
weight <real server weight (1-48)> | |
Sets the weighting value that this real server is given in the load balancing algorithms. Higher weighting values force the server to receive more connections than the other servers configured in the same real server group. A setting of 10 assigns the server roughly 10 times the number of connections as a server with a weight of 1. Values: 1 – 48 Default: 1 | |
avail <server weight (1-48)> | |
Displays the currently available real server for Global Server Load Balancing (GSLB), and allows the user to change to another real server for GSLB. | |
maxcon <max connections, 0-200000> [<mode, physical/logical] | |
Sets the maximum number of simultaneous connections that this real server can support. No new connections are issued to this server if this limit is reached. New connections are issued again to this server once the number of current connections has decreased below the limit. Note: If all servers in a real server group for a virtual server reach their simultaneous connection limit at the same time, client requests are sent to the backup/overflow server or backup/overflow server group. If no backup servers or server group are configured, client requests are dropped by the virtual server. Values: 0-200,000 Default: 0 (no connection limit) The mode command sets the maximum connections mode. Real servers with the same IP address must be configured with the same maximum connections mode. Values: ![]() ![]() Default: physical | |
tmout <even number of minutes (2-32768)> | |
Specifies the length of time, in minutes, that an inactive session remains in the session table. Every client-to-server session being load balanced is recorded in the session table. When the client ends the session, the session table entry is removed. In certain circumstances, such as when a client application is abnormally terminated by the client’s system, TCP and UDP connections remain registered in the session table. In order to prevent table overflow, these orphaned entries must be aged out of the session table. Default: 10 Notes ![]() ![]() Also use this option to set the number of minutes to wait before removing orphan table entries. This option is also used with the persistent option (see the pbind command at /cfg/slb/virt <server number> /service <virtual port or application name> Virtual Server Service Configuration). When pbind is activated, this option sets how long an idle client is allowed to remain associated with a particular server. | |
backup <real server ID (alphanumeric)>|none | |
Sets the real server used as the backup or overflow server for this real server. To prevent loss of service if a particular real server fails, use this option to assign a backup real server ID. If the real server becomes inoperative, Alteon activates the backup real server until the original becomes operative again. The backup server is also used in overflow situations. If the real server reaches its maximum connections (maxcon) limit, the backup comes online to provide additional processing power until the original server becomes desaturated. The same backup or overflow server may be assigned to more than one real server at the same time | |
preempt disable|enable | |
The real server configuration to enable or disable backup preemption. Values: ![]() ![]() Default: enable Note: The preempt option does not support preemption between a primary backup group and secondary backup group real servers. For example, G1 is the primary group, G2 is the backup group, and G3 is the secondary backup group. If G1 fails, G2 functions as backup for G1. If G2 fails, G3 functions as the backup group for G1. If G2 becomes active, G3 will not preempt and continues to handle the connections until it is alive. | |
inter [1-600|inherit] | |
Sets the interval (in seconds) between real server health verification attempts. Determining the health for each real server is a basic function for SLB. By default, Alteon checks the health of a real server using ICMP. Once servers are attached to groups which, in turn, are attached to services, Alteon checks the availability of the services running on the server using the health checks configured for the group. However, it is possible to override this behavior and configure for each real server its own health checks. This option lets you choose the time between health checks, or use the interval defined within the health check itself. Values: ![]() ![]() Default: inherit | |
retry [1-63|inherit] | |
Sets the number of failed health check attempts required before declaring this real server inoperative, or uses the value defined within the health check itself. Values: ![]() ![]() Default: inherit | |
restr [1-63|inherit] | |
Sets the number of successful health check attempts required before declaring a TCP and UDP service operational, or uses the value defined within the health check itself. Values: ![]() ![]() Default: inherit | |
overflo enable|disable | |
Enables or disables backup upon overflow. | |
addport <real server port (2–65534)> | |
Adds multiple service ports to the server. | |
remport <real server port (2–65534)> | |
Removes multiple service ports from the server. | |
remote disable|enable | |
Enables or disables remote site operation for this server. This option should be enabled when the real IP address represents a remote server (real or virtual) that Alteon accesses as part of its GSLB network. For more information, see the Alteon Command Line Interface Application Guide. Default: disable | |
fasthc disable|enable | |
Enables or disables fast health checking. Values: ![]() ![]() Default: enable | |
downbw | |
Sets the maximum WAN Link download bandwidth limit (in MBps). If the WAN link download bandwidth reaches the configured limit, it marks the server as overflowed and does not forward any new session to it This setting also used for link selection based on utilization (the least-loaded link) which is available only with ‘Server Bandwidth’ metric. Valid range: 0-100000 Default: 0 | |
upbw | |
Sets the maximum WAN Link upload bandwidth limit (in MBps). If the WAN link upload bandwidth reaches the configured limit, it marks the server as overflowed and does not forward any new session to it This setting also used for link selection based on utilization (the least-loaded link) which is available only with ‘Server Bandwidth’ metric. Valid range: 0-100000 Default: 0 | |
ena | |
You must perform this command to enable this real server for Layer 4 service. When enabled, the real server can process virtual server requests associated with its real server group. When using the apply and save commands, this option enables this real server for operation until explicitly disabled. For an operations-level command to enable SLB, see /oper/slb/ena on /oper/slb Operations-Level SLB Options. | |
dis | |
Disables this real server from Layer 4 service. A disabled server no longer processes virtual server requests as part of the real server group to which it is assigned. This option, when the apply and save commands are used, disables this real server until it is explicitly re-enabled. Note: This option does not perform a graceful server shutdown. | |
shut connection|psession | |
Specifies how to gracefully shut down a real server. Values: ![]() ![]() | |
del | |
Deletes this real server from the Layer 4 switching software configuration. This removes the real server from operation within its real server groups. Note: Use this command with caution, as it will delete any configuration options that have been set for this real server. This option does not perform a graceful server shutdown. | |
cur | |
Displays the current configuration information for this real server. |