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Dell EMC SmartFabric OS10 User Guide Release 10.5.0

IPv6 extended prefix routes

IPv6 addresses that contain prefix routes with mask between /64 to /128 are called as IPv6 extended prefix routes. These routes require double the key size in the Longest prefix match (LPM) table.

You can configure the number of route entries for extended prefix using the hardware l3 ipv6-extended-prefix prefix-number command.

Save and Reload the switch for the settings to become effective.

Configure IPv6 extended prefix route
OS10# configure terminal 
OS10(config)# hardware l3 ipv6-extended-prefix 2048
 % Warning: IPv6 Extended Prefix Installation will be applied only after a save and reload.
OS10(config)# do write memory
OS10(config)# reload
View IPv6 extended prefix route configuration
OS10# show running-configuration | grep hardware
 hardware l3 ipv6-extended-prefix 2048
Configuration before reload:
OS10# show hardware l3 
                               Current Settings       Next-boot Settings
 IPv6 Extended Prefix Entries: 0                      2048 
Configuration after reload:
OS10# show hardware l3 
                               Current Settings       Next-boot Settings
 IPv6 Extended Prefix Entries: 2048                   2048 
The no version of the command removes the IPv6 extended prefix route configuration. Save and Reload the switch to remove the configuration.
OS10(config)# no hardware l3 ipv6-extended-prefix 
 % Warning: Un-configuring IPv6 Extended Prefix will be applied only after a save and reload.

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