Np Uplinks; Flogi Operation - Cisco Nexus 6000 Series Configuration Manual

Configuring N Port Virtualization

NP Uplinks

All interfaces from the edge switch to the core switch are configured as proxy N ports (NP ports).
An NP uplink is a connection from an NP port on the edge switch to an F port on the core switch. When an
NP uplink is established, the edge switch sends a fabric login message (FLOGI) to the core switch, and then
(if the FLOGI is successful) it registers itself with the name server on the core switch. Subsequent FLOGIs
from end devices connected to this NP uplink are forwarded as-is to the core switch.
In the switch CLI configuration commands and output displays, NP uplinks are called External Interfaces.
Note
In Cisco Nexus devices, NP uplink interfaces are virtual Fibre Channel interfaces.
Related Topics
Fabric Login, on page 119

FLOGI Operation

When an NP port becomes operational, the switch first logs itself in to the core switch by sending a FLOGI
request (using the port WWN of the NP port).
After completing the FLOGI request, the switch registers itself with the fabric name server on the core switch
(using the symbolic port name of the NP port and the IP address of the edge switch).
The following table identifies port and node names in the edge switch used in NPV mode.
Table 3: Edge Switch FLOGI Parameters
Parameter
pWWN
nWWN
symbolic port name
IP address
symbolic node name
We do not recommend using fWWN-based zoning on the edge switch for the following reasons:
• Zoning is not enforced at the edge switch (rather, it is enforced on the core switch).
• Multiple devices attached to an edge switch log in through the same F port on the core, so they cannot
be separated into different zones.
OL-27932-01
Derived From
The fWWN of the NP port on the edge switch.
The VSAN-based sWWN of the edge switch.
The edge switch name and NP port interface string.
Note
The IP address of the edge switch.
The edge switch name.
Cisco Nexus 6000 Series NX-OS SAN Switching Configuration Guide, Release 6.x
Information About NPV
If no switch name is available, the output
will read "switch." For example, switch: fc
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