Users Guide

Usage Information
Configure a network entity title (the net command) to specify the area address and the router system ID.
Enable routing on one or more interfaces to establish adjacencies and establish dynamic routing.
You can configure only one IS-IS routing process to perform Level 2 routing. A level-1-2 designation
performs Level 1 and Level 2 routing at the same time.
Related
Commands
• ip router isis — configure IS-IS routing processes for IP on interfaces and attaches an area designator
to the routing process.
• net — configure an IS-IS network entity title (NET) for a routing process.
• is-type — assign a type for a given area.
set-overload-bit
To set the overload bit in zeroth fragment of non-pseudonode LSPs on the router, configure the router. This setting prevents
other routers from using it as an intermediate hop in their shortest path first (SPF) calculations.
Syntax
set-overload-bit
To return to the default values, use the no set-overload-bit command.
Defaults Not set.
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
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.
7.8.1.0 Added support for multi-topology ISIS.
6.3.1.0 Introduced.
Usage Information Set the overload bit when a router experiences problems, such as a memory shortage due to an
incomplete link state database which can result in an incomplete or inaccurate routing table. If you set
the overload bit in its LSPs, other routers ignore the unreliable router in their SPF calculations until the
router has recovered.
Intermediate System to Intermediate System (IS-IS) 947