Administrator Guide

To return to the default values, use the no isis hello-interval [seconds] [level-1 | level-2]
command.
Parameters
seconds Allows you to set the length of time between hello packet transmissions. The range is
from 1 to 65535. The default is 10.
level-1 (OPTIONAL) Select this value to congure the hello interval for Level 1. This value is the
default.
level-2 (OPTIONAL) Select this value to congure the hello interval for Level 2.
Defaults seconds = 10; level-1 (if not otherwise specied)
Command Modes INTERFACE
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.
Usage Information
Hello packets are held for a length of three times the value of the hello interval. To conserve bandwidth and CPU
usage, use a high hello interval seconds. Use a low hello interval seconds for faster convergence (but uses more
bandwidth and CPU resources).
Related Commands
• isis hello-multiplier — specify the number of IS-IS hello packets a neighbor must miss before the router
declares the adjacency as down.
isis hello-multiplier
Specify the number of IS-IS hello packets a neighbor must miss before the router declares the adjacency down.
Syntax
isis hello-multiplier multiplier [level-1 | level-2]
To return to the default values, use the no isis hello-multiplier [multiplier] [level-1 |
level-2] command.
Parameters
multiplier Species an integer that sets the multiplier for the hello holding time. Never congure a
hello-multiplier lower than the default (3). The range is from 3 to 1000. The default is 3.
Intermediate System to Intermediate System (IS-IS) 873