Customizes the internal hardware forwarding tables based on the customer‘s network requirements.
| forwarding | Configure settings for hardware forwarding. |
| internal-tables | Configure settings for internal lookup tables. |
| l2-and-l3 | Program the internal lookup tables for layer-2 MAC FDB and layer-3 hosts and IP multicast (default). |
| more | Configure the internal lookup tables for additional entries of specified types. |
| l2 | Program the internal lookup tables for additional layer-2 MAC FDB entries. |
| l3-and-ipmc | Program the internal lookup tables for additional layer-3 hosts and IP multicast. |
l2-and-l3.
Use this command to customize the internal hardware forwarding tables based on the customer‘s network requirements.
The Summit X460-G2, X670-G2, X770 and BlackDiamond X8-100G4X have hardware forwarding tables internal to the switch chips that can be partitioned in a flexible manner.
To display the current configuration, use the show forwarding configuration command.
By default, the internal tables have L2 and L3 capacity whose relative size is similar to existing products, such as Summit X670. The default is:
configure forwarding internal-tables l2-and-l3
There are two other choices. You can elect to have more L2 hardware table entries:
configure forwarding internal-tables more l2
Or, you can choose to have more L3 unicast and multicast entries:
configure forwarding internal-tables more l3-and-ipmc
The current and configured values are shown in the output of the show command:
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Download EPUBBD-X8.4 # show forwarding configuration
L2 and L3 Forwarding table hash algorithm:
Configured hash algorithm: crc32
Current hash algorithm: crc32
L3 Dual-Hash configuration:
Configured setting: on
Current setting: on
Dual-Hash Recursion Level: 1
Hash criteria for IP unicast traffic for L2 load sharing and ECMP route sharing
Sharing criteria: L3_L4
IP multicast:
Group Table Compression: on
Local Network Forwarding: slow-path
Lookup-Key: (SourceIP, GroupIP, VlanId)
Internal lookup tables:
Configured Setting: more l2
Current Setting: l2-and-l3
NOTE: A save and reboot are required before the configured setting will take effect.
Switch Settings:
Switching mode: store-and-forward
L2 Protocol:
Fast convergence: on
Fabric Flow Control:
Fabric Flow Control: auto
This command was first available in ExtremeXOS 15.4.
Summit X460-G2, X670-G2, and X770 (standalone or in a stack) and BDXB-100G4X.