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Cisco Nexus B22 Fabric Extender for Dell Getting Started Guide
Configuring the Cisco Nexus B22 Fabric Extender for Dell
Configuring the Fabric Extender
To configure global features for a Fabric Extender, perform this tasks:
Caution
Changing the number of uplinks with the
pinning max-links
command or the
no pinning max-links
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.
Command
Purpose
Step 1
switch#
configure terminal
Enters configuration mode.
Step 2
switch(config)#
fex
FEX Number
Enters configuration mode for the specified Fabric
Extender FEX Number. The range of the FEX
Number is from 100 to 199.
Step 3
switch(config-fex)#
description
desc
Specifies the description. The default is the string
FEX
xxxx
where
xxxx
is the FEX Number. If the FEX
Number 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 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.
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 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.
switch(config-fex)#
no serial
Deletes the serial number string.
