Describes the reload and delayed-deletion requirements that support hardware profile transitions and reduce traffic loss while BGP and EVPN services converge.
Line card reload
You need to reload the line cards as the hardware profiles go through multiple transitions during the Full-Replace migration to SRv6 uSID.
Delayed Delete Command
You can overcome the traffic drop duration during the swap from format1 by f3216 on a PE node, depending on the BGP/EVPN convergence, by using the delayed_delete command. When the delayed_delete command is configured against the format1 SID locator, the RIB notifies EVPN about this change. The EVPN in turn stores the delayed flag in its RIB locator database.