To disable adjacency check, use the no adjacency-check command.Defaults Enabled.Command Modes • ROUTER ISIS (for IPv4)• CONFIGURATION-ROUTER-ISIS-ADDRESS-FAMILY-IPV6 (for IPv6)Command History This guide is platform-specific. For command information about other platforms, see the relevant Dell NetworkingOS Command Line Reference Guide.Version Description9.10(0.0) Introduced on the S6100–ON.9.8(1.0) Introduced on the Z9100–ON.9.8(0.0P5) Introduced on the S4048-ON.9.8(0.0P2) Introduced on the S3048-ON.9.7(0.0) Introduced on the S6000-ON.9.5(0.1) Introduced on the Z9500.9.0.2.0 Introduced on the S6000.8.3.19.0 Introduced on the S4820T.8.3.12.0 Introduced on the S4810.8.3.11.1 Introduced on the Z9000.7.5.1.0 Introduced on the E-Series.Usage Information To perform protocol-support consistency checks on hello packets, use this command. The adjacency-check isenabled by default.If a BFD session goes down indicating that IPv4 or IPv6 connectivity to its neighbor is lost, it does not imply thatthe adjacency is lost altogether. The hello adjacency runs over Layer 2, and does not require IP connectivity.However, if IPv4 connectivity is lost to a neighbor, then when the next SPF calculation is performed, the systemensures that it does not calculate any IPv4 or IPv6 routes through that neighbor.advertiseLeak routes between levels (distribute IP prefixes between Level 1 and Level 2 and vice versa).Syntax advertise {level1-into-level2 | level2-into-level1} prefix-list-nameTo return to the default, use the no advertise {level1-into-level2 | level2-into-level1}[prefix-list-name] command.Parameters level1-into-level2 Enter the keywords level1-into-level2 to advertise Level 1 routes into Level 2LSPs. This setting is the default.level2-into-level1 Enter the keywords level2-into-level1 to advertise Level 2 inter-area routes intoLevel 1 LSPs. This behavior is described in RFC 2966.836 Intermediate System to Intermediate System (IS-IS)
