Administrator Guide

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Version Description

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

EMC Networking OS Command Line Reference Guide.

Version Description

9.10(0.1) Introduced on the S6010-ON and S4048T-ON.

9.10(0.0) Introduced on the S3148.

9.10(0.0) Introduced on the S6100–ON.

9.8(2.0) Introduced on the S3100 series.

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.