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Whereas traditional Fibre Channel switches rely solely on hardware redundancy for high availability , the Cisco MDS 9500 Series provides a robust set of software features to enhance the hardware-based redundancy in the typical storage network . Using the 802.1x standard and the Cisco Secure Access Control Server ( ACS ) , users can be assigned a VLAN upon authentication , regardless of where they connect to the network . Strapped for cash , behind with creditors and or at the steep end of pipeline development , any number of entrepreneurs are looking for the way out of the daily grind . Upon switchover , the data plane will continue to forward packets while the control plane alerts its neighbors of the switchover by issuing an NSF graceful restart to " NSF aware " neighbors . It is targeted towards those users that are not familiar with the Cisco MDS 9000 Family CLI or prefer to use GUI interfaces . The lifecycle of a major release starts with the first customer ship ( FCS ) of the first minor release . Students told us they complete their schoolwork more quickly ; they are less likely to get stymied by material they do n't understand ; their papers and projects are more likely to draw upon up-to-date sources and state-of-the-art knowledge ; and , they are better at juggling their school assignments and extracurricular activities when they use the Internet . Like politics , human capital is a local phenomenon with a national component . They even take online classes and develop Web sites or online educational experiences for use by others . From device to fabric to resource management , the Cisco MDS 9000 Family offers a set of tools that can be used to independently manage a fabric , or provide interfaces for 3rd party tools to gain access to fabric configuration and statistics for seamless management . So , whether using a 3rd party application , or writing custom in-house applications to manage the storage network , the detailed device and topology information that can be gathered via these FC-GS-4 related MIBs allows the user to accurately create and audit a fabric topology and its registrants . At the ingress , the Catalyst 2960 Series also polices to determine whether a packet is in or out of profile , marks to change the classification label , passes through or drops out of profile packets , and queues packets based on classification . With the scalability to reach up to 24 FCIP tunnels with a single IP services module , interconnection between large numbers of SAN islands becomes feasible at a competitive cost . Ethernet switching technology is the foundation upon which many of these services are built . Optical services modules ( OSMs ) are line cards that provide high-speed WAN connectivity with onboard network processors for distributed-line-rate IP services applications . Engineering will no longer actively apply any defect repairs to the release , regardless of origin or severity ( except for security defects ) . No communication is possible between devices in different VSANs except where explicitly allowed through the use of Inter-VSAN Routing . With the DC Core , DC Aggregation and possibly the DC Access Layers using Layer 3 protocols to maintain forwarding tables , so too the need to ensure that flapping routes do not impact network stability .