Modifies hardware table utilization by configuring the dual hashing recursion level.
| 0-3 | Sets the maximum number of L3 hash buckets to modify to make room for a new entry. |
The default is “1.”
This command allows you to select the dual hashing “recursion level” for hardware with the dual-hash feature. The setting applies only if dual-hash is configured or defaulted to “on” using the configure forwarding hash-algorithm command.
The configured recursion level is the maximum number of existing hash entries to move in an attempt to add a new hash entry. A higher recursion level may provide better hash utilization at the expense of additional CPU processing. This command does not require a system reboot. However, the new recursion level takes effect only for addresses added after the command is issued.
The following command modifies the dual-hash recursion level to modify up to two L3 hash buckets in an attempt to add a new entry:
configure forwarding hash-recursion-level 2
This command was first available in ExtremeXOS 12.1.
This command is available on ExtremeSwitching X435, X440-G2, X450-G2, X460-G2, X465, X590, X620, X670-G2, X690, X695, X870, 5320, 5420, and 5520 series switches.