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 only on the BlackDiamond X8, BlackDiamond 8800, and select Summit series switches.
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