Guides users through migrating an SRv6 network from Format 1 to uSID F3216 while maintaining service continuity across underlay and overlay networks.
This chapter introduces the Full-Replace Migration to SRv6 Micro-SID (f3216), a feature enabling network operators to seamlessly transition existing SRv6 deployments from the legacy "format1" full-length SIDs to the more efficient f3216 uSIDs.
Full-replace migration to SRv6 uSID
Explains how a phased, dual-mode migration replaces Format 1 with uSID F3216 across the underlay and overlay while minimizing service disruption.
Restrictions for full-replace migration to SRv6 micro-SID
Describes the reload and delayed-deletion requirements that support hardware profile transitions and reduce traffic loss while BGP and EVPN services converge.
How uSID f3216 migration works
Explains how Format 1 locators are replaced through preparation, dual-format underlay operation, overlay migration, SID replacement, and final removal from P and PE nodes.
Migrate an SRv6 network from format1 to uSID
Guides the staged migration of IS-IS, BGP, and EVPN services to uSID F3216, including prerequisite upgrades, dual-mode operation, delayed deletion, and verification.