Administrator Guide

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1731

downstream disable links

Configure the number of downstream links in the uplink-state group that are disabled if one upstream link in an uplink-state

group goes down.

C9000 Series

Syntax

downstream disable links {number |all}

To revert to the default setting, use the no downstream disable links command.

Parameters

number

Enter the number of downstream links to be brought down by UFD. The range is

from 1 to 1024.

all Brings down all downstream links in the group.

Defaults No downstream links are disabled when an upstream link in an uplink-state group goes down.

Command Modes UPLINK-STATE-GROUP

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.

9.2(1.0) Introduced on the Z9500.

8.3.19.0 Introduced on the S4820T.

8.3.12.0 Introduced on the S4810.

8.4.2.3 Introduced on the S-Series S50.

Usage

Information

A user-configurable number of downstream interfaces in an uplink-state group are put into a link-down

state with an UFD-Disabled error message when one upstream interface in an uplink-state group goes

down.

If all upstream interfaces in an uplink-state group go down, all downstream interfaces in the same uplink-

state group are put into a link-down state.

Commands

● downstream — assigns a port or port-channel to the uplink-state group as a downstream interface.

● uplink-state-group — creates an uplink-state group and enables the tracking of upstream links.

enable

Enable uplink state group tracking for a specific UFD group.