Administrator Guide

Version Description
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 rst 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 specied (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.
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
Command History
This guide is platform-specic. 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.
7.5.1.0 Added support for LSP Throttling Enhancement.
882 Intermediate System to Intermediate System (IS-IS)