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Routing & Switching · Advanced

SRv6

Segment routing over the IPv6 data plane, where segments are IPv6 addresses carried in the destination address and optional Segment Routing Header.

Definition

Each SRv6 SID consists of locator, function and argument parts; functions such as End, End.X and End.DT4 define behaviors. SRv6 micro-SIDs (uSID) compress multiple SIDs into one 128-bit address to reduce overhead.

Example

segment-routing srv6 / locators / locator MAIN / prefix fcbb:bb00:1::/48

Exam tip

SRv6 needs no MPLS; the SRH is an IPv6 routing extension header (type 4).

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