Derived FromParameter
The IP address of the edge switch.IP address
The edge switch name.symbolic node name
NPV Traffic Management
Automatic Uplink Selection
NPV supports automatic selection of NP uplinks. When a server interface is brought up, the NP uplink interface
with the minimum load is selected from the available NP uplinks in the same VSAN as the server interface.
When a new NP uplink interface becomes operational, the existing load is not redistributed automatically to
include the newly available uplink. Server interfaces that become operational after the NP uplink can select
the new NP uplink.
Traffic Maps
In Release 7.0(3)I7(2) and later software releases, FC NPV supports traffic maps. A traffic map allows you
to specify the NP uplinks that a server interface can use to connect to the core switches.
When an FC NPV traffic map is configured for a server interface, the server interface must select only
from the NP uplinks in its traffic map. If none of the specified NP uplinks are operational, the server
remains in a non-operational state.
Note
The FC NPV traffic map feature provides the following benefits:
•
Facilitates traffic engineering by allowing configuration of a fixed set of NP uplinks for a specific server
interface (or range of server interfaces).
•
Ensures correct operation of the persistent FC ID feature; this is because a server interface will always
connect to the same NP uplink (or one of a specified set of NP uplinks) after an interface reinitialization
or switch reboot.
•
Enables an external interface to be an individual link or SAN port channel.
Disruptive Auto Load Balancing of Server Logins across NP Links
In Release 7.0(3)I7(2) and later software releases, FC NPV supports disruptive load balancing. When disruptive
load balancing is enabled, FC NPV redistributes the server interfaces across all available NP uplinks when a
new NP uplink becomes operational. To move a server interface from one NP uplink to another NP uplink,
FC NPV forces reinitialization of the server interface so that the server performs a new login to the core switch.
Cisco Nexus 9000 Series NX-OS FC NPV Configuration Guide
10
Configuring N Port Virtualization
NPV Traffic Management
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