Dell Nexus B22 Getting Started Manual

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Brand: Dell

Category: Extender

Type: Getting started manual for Dell Nexus B22

Pages: 22 (0.81 Mb)

Download Dell Nexus B22 Getting started manual

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Cisco Nexus B22 Fabric Extender for Dell Getting Started Guide
Configuring the Cisco Nexus B22 Fabric Extender for Dell
You may want to perform this function in these two situations:
A change in the max-links configuration.
If you need to maintain the pinning order of host interfaces to fabric interfaces.
Changing the Number of Links
If you initially configured port 19 on the parent switch as your only fabric interface, all 16 host interfaces
are pinned to this port. If you provision another port, for example 20, then you must enter the pinning
max-links 2 command to redistribute the host interfaces. All host interfaces are brought down and host
interfaces 1 to 8 are pinned to fabric interface 19 and host interfaces 9 to 16 are pinned to fabric interface
20.
Maintaining the Pinning Order
The pinning order of the host interfaces is initially determined by the order in which the fabric interfaces
were configured. In this example, four fabric interfaces were configured in the following order:
switch(config-fex)#
switch(config-fex)#
switch(config-fex)# show interface ethernet 1/19 fex-intf
Fabric FEX
Interface Interfaces
---------------------------------------------------
Eth1/19 Eth100/1/4 Eth100/1/3 Eth100/1/2 Eth100/1/1
switch(config-fex)# show interface ethernet 1/20 fex-intf
Fabric FEX
Interface Interfaces
---------------------------------------------------
Eth1/20 Eth100/1/8 Eth100/1/7 Eth100/1/6 Eth100/1/5
switch(config-fex)# show interface ethernet 1/21 fex-intf
Fabric FEX
Interface Interfaces
---------------------------------------------------
Eth1/21 Eth100/1/12 Eth100/1/11 Eth100/1/10 Eth100/1/9
switch(config-fex)# show interface ethernet 1/22 fex-intf
Fabric FEX
Interface Interfaces
---------------------------------------------------
Eth1/22 Eth100/1/16 Eth100/1/15 Eth100/1/14 Eth100/1/13
The next time that you reboot the Fabric Extender, the configured fabric interfaces are pinned to the host
interfaces in an ascending order by port number of the fabric interface. If you want to configure the same
fixed distribution of host interfaces without restarting the Fabric Extender, enter the fex pinning
redistribute command.
To redistribute the host interfaces on the Fabric Extender, perform this task:
Command Purpose
switch# fex pinning redistribute FEX
Number
Redistributes the host connections. The range of the
FEX number is from 100 to 199.