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For FIP capable, converged network adapters, such as the Cisco UCS CNA M72KR-Q and the Cisco UCS
CNA M72KR-E, the named VSAN must be configured with a named VLAN that is not the native VLAN for
the FCoE VLAN ID. This configuration ensures that FCoE traffic can pass through these adapters.
In the following sample configuration, a service profile with a vNIC and vHBA mapped to fabric A is associated
with a server that has FIP capable, converged network adapters:
• The vNIC is configured to use VLAN 10.
• VLAN 10 is also designated as the native VLAN for the vNIC.
• The vHBA is configured to use VSAN 2.
• Therefore, VSAN 2 cannot be configured with VLAN 10 as the FCoE VLAN ID. VSAN 2 can be
mapped to any other VLAN configured on fabric A.
Fibre Channel Uplink Trunking for Named VSANs
You can configure Fibre Channel uplink trunking for the named VSANs on each fabric interconnect. If you
enable trunking on a fabric interconnect, all named VSANs in a Cisco UCS domain are allowed on all Fibre
Channel uplink ports on that fabric interconnect.
Guidelines and Recommendations for VSANs
The following guidelines and recommendations apply to all named VSANs, including storage VSANs.
VSAN 4079 is a Reserved VSAN ID
Do not configure a VSAN as 4079. This VSAN is reserved and cannot be used in either FC switch mode or
FC end-host mode.
If you create a named VSAN with ID 4079, Cisco UCS Manager marks that VSAN with an error and raises
a fault.
Reserved VSAN Range for Named VSANs in FC Switch Mode
If you plan to use FC switch mode in a Cisco UCS domain, do not configure VSANs with an ID in the range
from 3040 to 4078.
VSANs in that range are not operational if the fabric interconnects are configured to operate in FC switch
mode. Cisco UCS Manager marks that VSAN with an error and raises a fault.
Reserved VSAN Range for Named VSANs in FC End-Host Mode
If you plan to use FC end-host mode in a Cisco UCS domain, do not configure VSANs with an ID in the range
from 3840 to 4079.
VSANs in that range are not operational if the following conditions exist in a Cisco UCS domain:
• The fabric interconnects are configured to operate in FC end-host mode.
• The Cisco UCS domain is configured with Fibre Channel trunking or SAN port channels.
If these configurations exist, Cisco UCS Manager does the following:
Cisco UCS Manager GUI Configuration Guide, Release 2.0
334 OL-25712-04
Fibre Channel Uplink Trunking for Named VSANs