TOI Author

"Micro segment" (SRv6 uSID or uSID for short) is an extension of SRv6 architecture, specifically designed to represent SRv6 SIDs in an extremely compact way. It addresses the overhead of using full 128-bit IPv6 SIDs for routing. Instead of using a 128-bit address for single SID, multiple uSIDs are packed into a single 128-bit address. Each 128-bit address comprises a block value representing the domain followed by multiple uSIDs, each of the same bit length. If there are bits left they are filled with trailing zeros. This allows for a complete SRv6 path to be represented by a 128-bit IPv6 address. Like a regular SID, each uSID is associated with a specific behavior on the SRv6 capable node. SRv6 uN refers to the End behavior with uSIDs.