Cisco UCS environment - VLAN Port Count

[Roberto Pancrazio Loiudice]

Hi everyone,
someone knows exactly how is the Access VLAN Port Count calculated? And, If I have the feature failover enabled in the vNICs, could it increase the total in some way?

Thanks so much

Regards,
Roberto

[Kirk J · Accepted solution]

Greetings.

General limits are listed at:

http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/ucs-manager/Reference-Docs/Configuration-Limits/3-1/b_UCS_Configuration_Limits_3_1.html

Total vlan port count = (# of blades * # of vNIC interfaces * # of VLANs) + (# of border uplinks * # of VLANs)

Types of Ports Included in the VLAN Port Count

* Border uplink Ethernet ports

* Border uplink Ether-channel member ports

* FCoE ports in a SAN cloud

* Ethernet ports in a NAS cloud

* Static and dynamic vNICs created through service profiles

* VM vNICs created as part of a port profile in a hypervisor in hypervisor domain

You can increase the VLAN Port Count above 32000 on your Fabric Interconnects by enabling the "VLAN Port Count Optimization" feature. This will increase your VLAN Port Count to 64000 by mapping the state of multiple VLANs into a single internal state.

See http://www.cisco.com/c/en/us/td/docs/unified_computing/ucs/ucs-manager/GUI-User-Guides/Network-Mgmt/3-1/b_UCSM_Network_Mgmt_Guide_3_1/b_UCSM_Network_Mgmt_Guide_3_1_chapter_0110.html#task_45375C0BBC794AB4BFB33EC1FE9E2E5C on how to enable VLAN port count optimization.

A fabric failover vnic only consumes a per 'ucsm domain' vlan port counter, so it does not cause 2 vlan port counts.

Thanks,

Kirk...

[Roberto Pancrazio Loiudice]

Hi Kirk,

I think you are right, but I have tried to migrate a service profile from template called one to template called two. The second service profile template was cloned from the first. The only difference is basically related to failover feature: the service profile template two have it enabled, while the first have it disabled. And I have noticed the Access VLAN Port Count has changed from 61018 to 61775. So I think that in some way the failover feature has increased this count.

What do you think?

Bye

Roberto