Category Archives: 17823

Cisco Offers Free Nexus 1000V Integrated Switch for Hyper-V

Hyper-V 3.0 on Windows Server 2012 offers a new feature called an extensible virtual switch.  This feature allows you to replace the Windows integrated virtual switch in Hyper-V with a third-party switch, such as the Cisco 1000V.  You can get a quick overview of Hyper-V extensible virtual switches here.

The Cisco 1000V virtual switch provides many advanced capabilities to Hyper-V VMs such as advanced switching (private VLANs, ACLs, PortSecurity, and Cisco vPath), security, monitoring, and manageability.  Best of all it’s free to download here!


The following information comes from Cisco’s Cisco Nexus 1000V Switch for Microsoft Hyper-V website:

Features and Capabilities

The Cisco Nexus 1000V Switch for Microsoft Hyper-V:
  • Offers consistent operational experience across physical, virtual, and mixed hypervisor environments
  • Reduces operational complexity through dynamic policy provisioning and mobility-aware network policies
  • Improves security through integrated virtual services and advanced Cisco NX-OS features


The following table summarizes the capabilities and benefits of the Cisco Nexus 1000V Switch for Microsoft Hyper-V.
CapabilitiesFeaturesOperational Benefits
Advanced SwitchingPrivate VLANs, Quality of Service (QoS), access control lists (ACLs), portsecurity, and Cisco vPathGet granular control of virtual machine-to-virtual machine interaction.
SecurityDynamic Host Configuration Protocol (DHCP) Snooping, Dynamic Address Resolution Protocol Inspection, and IP Source GuardReduce common security threats in data center environments.
MonitoringNetFlow, packet statistics, Switched Port Analyzer (SPAN), and Encapsulated Remote SPANGain visibility into virtual machine-to-virtual machine traffic to reduce troubleshooting time.
ManageabilitySimple Network Management Protocol, NetConf, syslog, and other troubleshooting command-line interfacesUse existing network management tools to manage physical and virtual environments

The Cisco Nexus 1000V won the Best of Microsoft TechEd 2013 award in the Virtualization category.



If you’re interested in learning more about the Nexus 1000V extensible switch, I encourage you to view the following 2 hour session on CiscoLive365: BRKVIR-2017. – The Nexus 1000V on Microsoft Hyper-V: Expanding the Virtual Edge (2013 London).  Free registration is required.  Bennial also posted the PowerPoint slide deck for this session on ScribD here.



Inbox Rules Do Not Work on Unity Connections 8.5.1 Messages

I ran into this with a customer recently and wanted to document what I found.  The customer is using Cisco Unity Connections 9.1 for voicemail with Single Inbox and Exchange 2010 SP3.



Cisco’s Single Inbox provides a UM experience similar to Exchange Unified Messaging, where voicemails are delivered to the user’s Inbox as emails with attached WAV files.  The voicemail messages are linked by Unity Connections so that if a user deletes a voicemail in Unity, the email message is also deleted.  Likewise, if the user deletes the voicemail email message in Exchange the voicemail is deleted in Unity.



Unity Connections 8.5.x and later uses Exchange Web Services (EWS) for connectivity to Exchange 2007 and Exchange 2010 mailboxes using a service account.  How Unity programmatically does this is a mystery since it is not documented anywhere in Cisco’s documentation.



The issue here is that the way Unity Connections Single Inbox creates the message in the recipient’s mailbox bypasses the rules table associated with the mailbox.  The result is that rules don’t fire for these messages.  For example, it’s common for users to create an Inbox rule that moves messages from Unity Connections to a custom folder like “Voicemails”.  If you manually run the rule it works as expected.




This issue is documented somewhat in the Cisco Community Forums here: https://supportforums.cisco.com/docs/DOC-17854.  A comment in this forum post implies this is an Exchange bug, but I’ve confirmed that Inbox rules fire correctly when messages are sent via EWS in a normal manner.  Fellow Exchange MCM, Mike Pfeiffer, has a great post on Sending Email with PowerShell and the EWS Managed API.  I used this PowerShell function to send emails using EWS and test Inbox rules, which worked perfectly.



I’ve tried every creative trick I know to work around this issue, to no avail.  In the end, there’s really nothing that can be done to fix this until Cisco changes to the way it sends Single Inbox messages using EWS.


Unacceptable WebEx Password

This is hilarious!


The password I am trying to use is: Ihatewebex2!  This meets all the requirements except – “Should not be easy to guess”.





Note:  The curse word I used last week was accepted.