Users Guide

Defaults Enabled.
Command Modes
• ROUTER ISIS (for IPv4)
• CONFIGURATION-ROUTER-ISIS-ADDRESS-FAMILY-IPV6 (for IPv6)
Command History
This guide is platform-specic. For command information about other platforms, see the relevant Dell Networking
OS Command Line Reference Guide.
Version Description
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 is
enabled by default.
If a BFD session goes down indicating that IPv4 or IPv6 connectivity to its neighbor is lost, it does not imply that
the 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 system
ensures that it does not calculate any IPv4 or IPv6 routes through that neighbor.
advertise
Leak routes between levels (distribute IP prexes between Level 1 and Level 2 and vice versa).
Syntax
advertise {level1-into-level2 | level2-into-level1} prefix-list-name
To 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 2
LSPs. This setting is the default.
level2-into-level1 Enter the keywords level2-into-level1 to advertise Level 2 inter-area routes into
Level 1 LSPs. This behavior is described in RFC 2966.
prex-list-name Enter the name of a congured IP prex list. Routes meeting the criteria of the IP Prex
list are leaked.
Defaults level1-into-level2 (Level 1 to Level 2 leaking is enabled.)
level2–into-level1 (Level 2 to Level 1) leaking is disabled.
792 Intermediate System to Intermediate System (IS-IS)