Users Guide

Version Description
9.10(0.1) Introduced on the S6010-ON and S4048T-ON.
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.
6.3.1.0 Introduced on the E-Series.
Usage Information
Every graceful restart enabled router’s HELLO PDUs includes a restart TLV. This restart
enables (re)starting as well as the existing ISIS peers to detect the GR capability of the
routers on the connected network. A flag in the Restart TLV contains restart request
(RR), restart acknowledge (RA) and suppress adjacency advertisement (SA) bit flags.
The ISIS graceful restart-enabled router can co-exist in mixed topologies where some
routers are graceful restart-enabled and others are not. For neighbors that are not
graceful restart-enabled, the restarting router brings up the adjacency per the usual
methods.
graceful-restart interval
Set the graceful restart grace period, the time during that all graceful restart attempts are prevented.
Syntax
graceful-restart interval minutes
To return to the default, use the no graceful-restart interval command.
Parameters
minutes Enter the graceful-restart interval minutes. The range is from 1
to 20 minutes. The default is 5 minutes.
Defaults 5 minutes
Command Modes ROUTER ISIS
Command History
This guide is platform-specific. For command information about other platforms, see
the relevant Dell Networking OS Command Line Reference Guide.
Intermediate System to Intermediate System (IS-IS) 1123