Performs the IPv6 shortest path first (SPF) calculation without clearing the IS-IS database.
Privileged EXEC mode
IS-IS is supported only on devices based on the DNX chipset family. For a list of such devices, see "Supported Hardware".
This example specifies that IPv6 SPF calculations can be performed without clearing the IS-IS database for Level 1 packets.
device# clear isis force-v6spf level-1