Deployment Guide

interval seconds Enter the maximum number of seconds between LSP generations. The range is
from 0 to 120 seconds. The default is 5 seconds.
initial_wait_inter
val seconds
(OPTIONAL) Enter the initial wait time, in seconds, before running the first LSP
generation. The range is from 0 to 120 seconds. The default is 1 second.
second_wait_inte
rval seconds
(OPTIONAL) Enter the wait interval, in seconds, between the first and second LSP
generation. The range is from 0 to 120 seconds. The default is 5 seconds.
Defaults Refer to Parameters.
Command Modes ROUTER ISIS
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
9.9(0.0) Introduced on the C9010.
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 Added support for LSP Throttling Enhancement.
Usage
Information
LSP throttling slows down the frequency at which LSPs are generated during network instability. Even
though throttling LSP generations slows down network convergence, no throttling can result in a network
not functioning as expected. If network topology is unstable, throttling slows down the scheduling of LSP
generations until the topology regains its stability.
The first generation is controlled by the initial wait interval and the second generation is controlled by the
second wait interval. Each subsequent wait interval is twice as long as the previous one until the wait
interval reaches the maximum wait time specified (interval seconds). After the network calms down
and there are no triggers for two times the maximum interval, fast behavior is restored (the initial wait
time).
lsp-mtu
Set the maximum transmission unit (MTU) of IS-IS link-state packets (LSPs). This command only limits the size of LSPs this
router generates.
C9000 Series
Syntax
lsp-mtu size
To return to the default values, use the no lsp-mtu command.
Parameters
size The maximum LSP size, in bytes. The range is from 512 to 16000 for Non-Jumbo
mode and from 128 to 9195 for Jumbo mode. The default is 1497.
NOTE: The appropriate interface circuit is brought down and removed.
Defaults 1497 bytes.
Command Modes ROUTER ISIS
Intermediate System to Intermediate System (IS-IS) 837