Service Manual

Version Description
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.
NOTE: Enables you to configure a single system wide value that is common for both IPv4 and IPv6
address.
show config
Display the changes you made to the IS-IS configuration. Default values are not shown.
Syntax
show config
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 Dell
Networking OS Command Line Reference Guide.
The following is a list of the Dell Networking OS version history for this command.
Version Description
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.
8.3.11.1 Introduced on the Z9000.
8.3.7.1 Introduced on the S4810.
Example (Router-
Isis)
The bold section identifies that Multi-Topology IS-IS is enabled in Transition mode.
Dell(conf-router_isis)#show config
!
router isis
clns host ISIS 49.0000.0001.F100.E120.0013.00
log-adjacency-changes
net 49.0000.0001.F100.E120.0013.00
!
address-family ipv6 unicast
maximum-paths 16
multi-topology transition
set-overload-bit
spf-interval level-1 100 15 20
spf-interval level-2 120 20 25
exit-address-family
Example
(Address-
Family_IPv6)
The bold section identifies that Multi-Topology IS-IS is enabled in Transition mode.
Dell(conf-router_isis-af_ipv6)#show conf
!
Intermediate System to Intermediate System (IS-IS) 847