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Ethernet Fabric (VDX, CNA)

Summary of new features and enhancements added in NOS v4.0.0

by on ‎07-31-2013 01:20 AM (1,557 Views)

Brocade Network Operating System (NOS) v4.0.0 is a new release to support new platforms, new features, and improved scalability on all VDX platforms. Brocade VCS Fabric Technology provides a new level of flexibility with the introduction of the next generation fixed form switch VDX 6740 and VDX6740-T.  The following highlights the newly added features and enhancements in NOS v4.0.0.


Summary of Features and Enhancements

Network OS v4.0.0 includes the following features for Brocade VDX products:


  • HA/ISSU (VDX8770)

With the introduction of Network OS 4.0.0, In-service software upgrades (ISSUs) are supported. An ISSU allows a dual management module system to be upgraded non-disruptively and is invoked by entering the firmware download command from the active management module (MM).


  • Logical Chassis (LC)

All switches in an Ethernet fabric are managed as if they were a single logical chassis. To the rest of the network, the fabric looks no different than any other Layer 2 switch.


  • DiST (STPoVCS)

Network OS v4.0.0 and later supports any version of STP to run in VCS mode and function correctly between interconnecting VCS nodes, or between VCS and other vendor’s switches. This feature is called Distributed Spanning Tree Protocol (DiST).


  • Private VLAN

A PVLAN is often used to isolate networks from security attacks, or to simplify IP address assignments.


  • Uni-directional Link Detection (UDLD)

UniDirectional Link Detection (UDLD) protocol is a nonstandard Layer 2 protocol that detects when a physical link becomes unidirectional by means of the exchange of UDLD protocol data units.


  • Flow-based QOS /sFlow

Flow-based sFlow is used to analyze a specific type of traffic (flow based on access control lists, or ACLs). This involves configuring an sFlow policy map and binding it to an interface.



Remote SPAN, or RSPAN, extends SPAN by enabling remote monitoring of multiple switches across your network.


  • Border Gateway Protocol (BGP)

Border Gateway Protocol (BGP) is an exterior gateway protocol that performs inter-autonomous system (AS) or inter-domain routing.


  • VRF-Lite

VRFs (Virtual Routing and Forwarding) is a technology that controls information flow within a network by isolating the traffic by partitioning the network into different logical VRF domains.


  • Metro VCS

Metro VCS allows you to interconnect different locations and form clusters of Data Centers (DC) over long distance in order to provide Disaster Protection/Recovery and load sharing.


  • QSFP breakout cable support for 40G port

SFP breakout is a new port configuration parameter. Breakout interfaces are those interfaces created on the breakout SFP. The number of interfaces created is dependent on the SFP type.When a Quad SFP (QSFP) is not in breakout mode, only one 40-Gbps interface exists; however, when that QSFP has breakout mode enabled, four 10-Gbps interfaces are created.


  • Storage F-port (VDX 6730)

The NOS 4.0.0 release adds standards based F_Port functionality on the VDX 6730 Fibre Channel ports. This F_Port can be used to connect Fibre Channel storage directly to the VDX 6730.


  • Inbuilt packet capture utility (PCAP)

The packet capture utility, executed by means of the “capture packet interface” command, enables capturing packets from an interface that are to / from CPU.


In addition, Network OS v4.0.0 includes the following new enhancements and support:


  • OSPF enhancements
  • VRRP/VRRPe enhancements
  • VCS Fabric Scale
  • vCenter Scale
  • Multiple sflow collectors and IPv6 based sflow
  • DHCPv6 support for Management interfaces for chassis systems
  • SPAN support on ISL port
  • Management Services enhancements


For details and description on the above mentioned features and additional information please refer to the NOS v4.0.0 Release Notes .