Dell Nexus B22 Getting Started Manual page 12

Configuring the Cisco Nexus B22 Fabric Extender for Dell
Configuring the Fabric Extender
To configure global features for a Fabric Extender, perform this tasks:
Command
Step 1
switch# configure terminal
Step 2
switch(config)# fex FEX Number
Step 3
switch(config-fex)# description desc
switch(config-fex)# no description
switch(config-fex)# pinning max-links
uplinks
switch(config-fex)# no pinning max-links
switch(config-fex)# serial serial
switch(config-fex)# no serial
Changing the number of uplinks with the pinning max-links command or the no pinning max-links
Caution
command disrupts all the host interface ports of the Fabric Extender.
Redistributing the Links
When you provision the Fabric Extender with statically pinned interfaces, the downlink host interfaces
on the Fabric Extender are pinned to the fabric interfaces in the order they were initially configured. If
you want to maintain a specific relationship of host interfaces to fabric interface across reboots, you
should re-pin the links.
Note The ports are distributed across the number specified in the pinning max-links section. So if you only
have 4 uplinks, you do not want to have max 8 since it will leave half your internal ports unmapped.
Cisco Nexus B22 Fabric Extender for Dell Getting Started Guide
12
Purpose
Enters configuration mode.
Enters configuration mode for the specified Fabric
Extender FEX Number. The range of the FEX
Number is from 100 to 199.
Specifies the description. The default is the string
FEXxxxx where xxxx is the FEX Number. If the FEX
Number is 123, the description is FEX0123.
Deletes the description.
Defines the number of uplinks. The default is 1. The
range is from 1 to 8.
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.
Resets the number of uplinks to the default.
Defines a serial number string. If this command is
configured, then a switch will only allow the
corresponding FEX Number 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.
Deletes the serial number string.