Users Guide

Version Description
9.7(0.0) Added support for dynamically fanning-out of interfaces on S6000. Introduced on the
S6000–ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.1 Introduced on the S4810.
Usage Information
You can split a 100G port into two 50G, one 40G, four 10G, or four 25G ports.
You can use the stack-unit portmode command to dynamically fan-out 100G ports into two 50G, one 40G,
four 10G, or four 25G ports and vice-versa without reloading a switch.
The port must be in a default conguration before it can be split. As the 100G port is lost in the conguration when
the port is split, ensure that you remove the port from other L2/L3 feature congurations.
If you use a 40G LR4 or 40G LM4 optics, you can only convert a 100G port into a 1x40G port. LR4 and LM4 optics
do not support dual mode or quad mode congurations.
To convert a fanned-out port back to 100G, use the no form of the stack-unit portmode command.
Example
Example of converting a 100G port to 1x40G
Dell(conf)#stack-unit 1 module 1 port 1 portmode single speed 40G
Warning: Enabling Single mode on stack-unit 1 module 1 port 1. Please verify
whether the configs related to interface Hu 1/1/1 are cleaned up before
proceeding further.
[confirm yes/no]:yes
Single mode is enabled on stack-unit 1 module 1 port 1
Dell(conf)#Sep 18 05:16:49: %STKUNIT1-M:CP %IFMGR-5-DYNAMIC_FANOUT: Port 1 in
slot 1 has been fanned-out
switchport
Place an interface in Layer 2 mode.
Syntax
switchport [[backup interface {interface | port-channel number}] | mode
private-vlan {host | promisucous | trunk}]
To remove an interface from Layer 2 mode and place it in Layer 3 mode, enter the no switchport command. If
a switchport backup interface is congured, rst remove the backup conguration. To remove a switchport backup
interface, enter the no switchport backup interface command.
Parameters
backup (OPTIONAL) Use this option to congure a redundant Layer 2 link without using Spanning
Tree. The keyword backup congures a backup port so that if the primary port fails, the
backup port changes to the up state. If the primary later comes up, it becomes the
backup.
interface interface (OPTIONAL) Enter any of the following keywords and the interface information:
692 Interfaces