About configuring maximum learn entries on a port
Configures the maximum number of ND Snooping entries that can be learned on a port.
If the maximum bindings value is configured before enabling ND Snooping, the limit is immediately applied and the bindings are not allowed to exceed the max-bindings value. If the max-bindings value is set after enabling ND Snooping, the following applies:
The current bindings are greater than the max-binding value, the configuration is applied as and when the ND Snooping entry ages out.
Current bindings are less than that of the value entered, the configuration is immediately applied.
NOTE:
This is similar to the features DSNOOPv4, DSNOOPv6 in some switches.