Reference Guide

Intermediate System to Intermediate System (IS-IS) | 845
Defaults
1200 seconds
Command Modes
ROUTER ISIS
Usage
Information
Change the maximum LSP lifetime with this command. The maximum LSP lifetime must always be
greater than the LSP refresh interval.
The seconds parameter enables the router to keep LSPs for the specified length of time. If the value is
higher, the overhead is reduced on slower-speed links.
Related
Commands
maximum-paths
e
Allows you to configure the maximum number of equal cost paths allowed in a routing table.
Syntax
maximum-paths number
To return to the default values, enter no maximum-paths.
Parameters
Defaults
4
Command Mode
ROUTER ISIS (for IPv4)
CONFIGURATION-ROUTER-ISIS-ADDRESS-FAMILY-IPV6 (for IPv6)
Command
History
metric-style
e
Configure a router to generate and accept old-style, new-style, or both styles of type, length, and values
(TLV).
Syntax
metric-style {narrow [transition] | transition | wide [transition]} [level-1 | level-2]
To return to the default values, enter the no metric-style {narrow [transition] | transition | wide
[transition]} [level-1 | level-2] command.
Parameters
lsp-refresh-interval Use this command to set the link-state packet (LSP) refresh interval.
number
Enter a number as the maximum number of parallel paths an IP routing installs in a
routing table.
Range: 1 to 16.
Default: 4
Version 7.8.1.0 Introduced MT ISIS support
Version 6.3.1.0 Introduced
narrow
Allows you to configure the E-Series to generate and accept old-style TLVs.
Metric range: 0 to 63
transition
Allows you to configure the E-Series to generate both old-style and new-style TLVs.
Metric range: 0 to 63