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Cisco Nexus B22 Fabric Extender for HP Getting Started Guide
  Configuring the Cisco Nexus B22 Fabric Extender for HP
                 Eth100/1/5    Eth100/1/6    Eth100/1/7    Eth100/1/8
                 Eth100/1/9    Eth100/1/10   Eth100/1/11   Eth100/1/12
                 Eth100/1/13   Eth100/1/14   Eth100/1/15   Eth100/1/16
Disassociating a Fabric Extender from an Interface
To disassociate the Fabric Extender from an interface, perform this task:
Configuring the Fabric Extender
To configure global features for a Fabric Extender, perform this tasks:
Command Purpose
switch(config-if)# no fex associate 
Disassociates the Fabric Extender unit attached to the 
interface.
Command Purpose
Step 1
switch# configure terminal 
Enters configuration mode.
Step 2
switch(config)# fex chassis 
Enters configuration mode for the specified Fabric 
Extender chassis ID. The range of the chassis ID is 
from 100 to 199. 
Step 3
switch(config-fex)# description desc 
Specifies the description. The default is the string 
FEXxxxx where xxxx is the chassis ID. If the chassis 
ID is 123, the description is FEX0123.
switch(config-fex)# no description 
Deletes the description.
switch(config-fex)# pinning max-links 
uplinks 
Defines the number of uplinks. The default is 1. The 
range is from 1 to 4.
This command is only applicable if the Fabric 
Extender is connected to its parent switch using one 
or more statically pinned fabric interfaces. There can 
only be one EtherChannel connection.
switch(config-fex)# no pinning max-links 
Resets the number of uplinks to the default.
switch(config-fex)# serial serial 
Defines a serial number string. If this command is 
configured, then a switch will only allow the 
corresponding chassis ID to associate (using the fex 
associate command) if the Fabric Extender reports a 
matching serial number string.
Configuring a serial number other than that of the 
given Fabric Extender will force the Fabric Extender 
offline.
switch(config-fex)# no serial 
Deletes the serial number string.
switch(config-fex)# beacon 
Turns on the beacon LED. This LED allows you to 
locate a specific Fabric Extender in a rack.
switch(config-fex)# no beacon 
Turns off the beacon LED.