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<a name="wp1290013"> </a><h1 class="pTitle">
Information About Network Monitoring

</h1>
<a name="wp1290113"> </a><p class="pBody">
DCNM-SAN provides extensive SAN discovery, topology mapping, and information viewing 
capabilities. DCNM-SAN collects information on the fabric topology through SNMP queries to the 
switches connected to it. DCNM-SAN recreates a fabric topology, presents it in a customizable map, and 
provides inventory and configuration information in multiple viewing options such as fabric view, device 
view, summary view, and operation view.

</p>
<a name="wp1290109"> </a><p class="pBody">
Once DCNM-SAN is invoked, a SAN discovery process begins. Using information polled from a seed 
Cisco MDS 9000 Family switch, including Name Server registrations, Fibre Channel Generic Services 
(FC-GS), Fabric Shortest Path First (FSPF), and SCSI-3, DCNM-SAN automatically discovers all 
devices and interconnects on one or more fabrics. All available switches, host bus adapters (HBAs), and 
storage devices are discovered. The Cisco MDS 9000 Family switches use Fabric-Device Management 
Interface (FMDI) to retrieve the HBA model, serial number and firmware version, and host 
operating-system type and version discovery without host agents. DCNM-SAN gathers this information 
through SNMP queries to each switch. The device information discovered includes device names, 
software revision levels, vendor, ISLs, PortChannels, and VSANs.

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<hr /><br><p class="pBody">Copyright 2010-2013, Cisco Systems, Inc. All rights reserved.</p> 

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