HP Integrity Superdome 2 16-socket Getting Started Manual page 11

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.
You may want to perform this function in these two situations:
•
•
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
Interface
---------------------------------------------------
Eth1/19
switch(config-fex)# show interface ethernet 1/20 fex-intf
Fabric
Interface
---------------------------------------------------
Eth1/20
switch(config-fex)# show interface ethernet 1/21 fex-intf
Fabric
Interface
---------------------------------------------------
Eth1/21
switch(config-fex)# show interface ethernet 1/22 fex-intf
Fabric
Interface
---------------------------------------------------
Eth1/22
A change in the max-links configuration.
If you need to maintain the pinning order of host interfaces to fabric interfaces.
FEX
Interfaces
Eth100/1/4
FEX
Interfaces
Eth100/1/8
FEX
Interfaces
Eth100/1/12
FEX
Interfaces
Eth100/1/16
Configuring the Cisco Nexus B22 Fabric Extender for HP
Eth100/1/3 Eth100/1/2
Eth100/1/7 Eth100/1/6
Eth100/1/11 Eth100/1/10
Eth100/1/15 Eth100/1/14
Cisco Nexus B22 Fabric Extender for HP Getting Started Guide
Eth100/1/1
Eth100/1/5
Eth100/1/9
Eth100/1/13
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