Cisco Systems DSC9148D8G48PK9 Multiple Vsan Support, Disruptive, NPV Guidelines and Requirements

Chapter 7 Configuring N Port Virtualization

Guidelines and Limitations

Disruptive

Disruptive load balance works independent of automatic selection of interfaces and a configured traffic map of external interfaces. This feature forces reinitialization of the server interfaces to achieve load balance when this feature is enabled and whenever a new external interface comes up. To avoid flapping the server interfaces too often, enable this feature once and then disable it whenever the needed load balance is achieved.

If disruptive load balance is not enabled, you need to manually flap the server interface to move some of the load to a new external interface.

Multiple VSAN Support

By grouping devices into different NPV sessions based on VSANs, it is possible to support multiple VSANs on the NPV-enabled switch. The correct uplink must be selected based on the VSAN that the uplink is carrying.

Guidelines and Limitations

This section includes the guidelines and limitations for this feature:

•NPV Guidelines and Requirements, page 7-8

•NPV Traffic Management Guidelines, page 7-9

•DPVM Configuration Guidelines, page 7-9

•NPV and Port Security Configuration Guidelines, page 7-10

NPV Guidelines and Requirements

Following are recommended guidelines and requirements when deploying NPV:

•NPV core switches must support NPIV.

•You can have up to 100 NPV devices.

•Nondisruptive upgrades are supported. See the Cisco MDS 9000 Family NX-OS Fundamentals Configuration Guide.

•Port tracking is supported. See the Cisco MDS 9000 Family NX-OS Security Configuration Guide.

•You can configure zoning for end devices that are connected to NPV devices using all available member types on the NPV core switch. If fWWN, sWWN, domain, or port-based zoning is used, then fWWN, sWWN or the domain/port of the NPV core switch should be used.

•Port security is supported on the NPV core switch for devices logged in via NPV.

•NPV uses a load-balancing algorithm to automatically assign end devices in a VSAN to one of the NPV core switch links (in the same VSAN) upon initial login. If there are multiple NPV core switch links in the same VSAN, then you cannot assign a specific one to an end device.

•Both servers and targets can be connected to an NPV device.

•Remote SPAN is not supported.

•Local switching is not supported; all traffic is switched using the NPV core switch.

	Cisco MDS 9000 Family NX-OS Interfaces Configuration Guide
7-8	OL-29284-01, Release 6.x