Reference Guide
Version 
8.3.19.0
Introduced on the S4820T.
Version 8.3.11.1 Introduced on the Z9000.
Version 8.3.7.0 Introduced on the S4810.
Version 8.1.1.0 Introduced on the E-Series ExaScale.
Version 7.6.1.0 Introduced on the S-Series.
Version 7.5.1.0 Introduced on the C-Series.
E-Series legacy 
command
Usage 
Information
The shutdown command marks a physical interface as unavailable for traffic. To 
discover if an interface is disabled, use the show ip interface brief 
command. Disabled interfaces are listed as down.
Disabling a VLAN or a port channel causes different behavior. When a VLAN is 
disabled, the Layer 3 functions within that VLAN are disabled. Layer 2 traffic 
continues to flow. Entering the shutdown command on a port channel disables all 
traffic on the port channel and the individual interfaces within the port channel. To 
enable a port channel, enter 
no shutdown on the port channel interface and at 
least one interface within that port channel.
The shutdown and description commands are the only commands that you 
can configure on an interface that is a member of a port channel.
Related 
Commands
interface port-channel — creates a port channel interface.
interface vlan — creates a VLAN.
show ip interface — displays the interface routing status. Add the keyword brief 
to display a table of interfaces and their status.
speed (for 10/100/1000 interfaces)
Set the speed for 10/100/1000 Base-T Ethernet interfaces. Set both sides of a link to the same speed 
(10/100/1000) or to auto or the link may not come up.
S4820T
Syntax
speed {10 | 100 | 1000 | auto}
To return to the default setting, use the no speed {10 | 100 | 1000} 
command.
Parameters
10 Enter the keyword 10 to set the interface’s speed to 10 Mb/s.
Interfaces
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