Reference Guide
Version 8.3.11.1 Introduced on the Z9000.
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 — configures IS-IS routing processes for IP on interfaces and attaches 
an area designator to the routing process.
• net — configures an IS-IS network entity title (NET) for a routing process.
• is-type — assigns a type for a given area.
set-overload-bit
To set the overload bit in its non-pseudonode LSPs, configure the router. This setting prevents other routers from using it 
as an intermediate hop in their shortest path first (SPF) calculations.
S4820T
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, refer to the 
relevant 
FTOS Command Line Reference Guide
.
The following is a list of the FTOS version history for this command.
Version 8.3.19.0 Introduced on the S4820T.
Version 8.3.12.0 Introduced on the S4810.
Version 8.3.11.1 Introduced on the Z9000.
Version 7.8.1.0 Added support for multi-topology ISIS.
Version 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 
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