Brocade Multi-Service IronWare Administration Guide (Supporting R05.6.00) - Manual (Page 76)

58 Multi-Service IronWare Administration Guide
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Configuration time
2
Configuration time
When system-max values are configured, the Management Module calculates the memory
required to accept the value. The resulting value is checked against the Known-Available-Memory
value, and calculated against the Highest Required Memory value for both the Management
Module and the Interface Module.
The Known-Available-Memory is a value with the Lowest Supported Available Memory on a node.
For example, if a node can accept a 1 Gigabyte LP, and a 512 MB LP, then the 512 MB LP will be
used. The Highest Required Memory is a value with most amount of memory available on a node.
For example, if a node has both 2 PPCR LP, and 1 PPCR LP, then the 2 PPCR LP will be used.
If the new system-max value is accepted, then the configuration will also be accepted. The following
information will display.
NOTE
You must write this command to memory and perform a system reload for this command to take
effect.
If the new system-max value is not accepted, then the configuration is rejected. The following error
message is printed on the console.
Bootup time
At bootup time, the Management Module will repeat the same process as done in the Configuration
time. The Management Module calculates the memory required to accept the system-max
configuration. The resulting value is checked against the Known-Available-Memory value for both
the Management Module and the Interface Module.
After the new system-max value is configured, there are three possible configuration outcomes.
The three possible configuration outcomes are described below.
1. The configuration can be accommodated, but leaves only 10% of Available Memory
In this configuration, a check is made against 90% of Available Memory. If the difference
between the Required Available Memory and the Available Memory is less than 10% of
Available Memory, then the configuration is accepted. The following warning message is
displayed on the console if it affects the Management Module or Interface Module.
The following warning message is displayed on the Management Module.
WARNING: Configured System-max Leaves less than 10 percent Free Memory
Available on MP.
The following warning message is displayed on the Interface Module.
WARNING: Configured System-max Leaves less than 10 percent Free Memory
Available on LP.
Brocade(config)#system-max mac 4000
Reload required. Please write memory and then reload or power cycle.
Failure to reload could cause system instability on failover.
Newly configured system-max will not take effect during hitless-reload.
Brocade(config)# system-max ipv4 10000
ERROR: Configured System-max value cannot be accommodated.