Белая книга для Cisco Cisco Nexus 5010 Switch

White Paper 

© 2010 Cisco Systems, Inc. All rights reserved. This document is Cisco Public Information. 

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If multiple NP uplink ports are connected to and configured for the core director, you have three options for 

configuring link selection for host logins and failover mechanisms. These are discussed in the following sections.  

Dynamic Load Balancing 

By default, the Cisco Nexus 5000 Series Switch will send fabric login messages down the available NP uplinks in a 

round-robin fashion. Should an NP uplink fail, hosts that were logged into the fabric through the failed NP uplink will 

need to log in again to the fabric and be load balanced across the other available NP uplinks  

NPV Traffic Management with the NPV Traffic Map 

The NPV traffic map associates one or more server-facing interfaces with an NP uplink interface. This feature allows 

the administrator to perform load balancing on a per-host basis. Here is the configuration: 

switch# config t 

switch(config)# npv traffic-map server-interface [ fc (slot/port) or vfc  

(slot/port)] external-interface fc slot/port 

List of External Interfaces per Server Interface 

When the server interface is down, or when the specified external interface list includes the external interface already 

in use, a list of external interfaces linked to the server interfaces is used. 

To configure the list of external interfaces per server interface using the GUI, follow these steps: 

1. 

In the Fabric Manager, choose Physical Attributes > Switches > N_Port Virtualizer (NPV).