The VSM is not in the data plane, meaning that if the VSM is down traffic flow is not interrupted between VMs and hosts. If the VSM is down you can't make any changes nor can you plug new VMs into the N1KV dvSwitch.
If you deploy the recommended active/standby with 2 VSMs then make sure you create a VMware DRS rule to always keep the 2 VSMs on separate ESX hosts.
The VSM can also live on an ESX host that is part of the N1KV dvSwitch.
Me personally, I like to put the VSM in a port group that lives on a standard vSwitch along with the ESX service console and vMotion vmkernel. Doing it this way makes for a smoother/easier deployment and is a lot easer to troubleshoot when things go wrong.
The VSM can be on any ESX host in your environment that has the proper management/control/packet VLANs trunked to it.
If the VSM is down you can no longer manage your VM switching environment and you cannot add new VMs to the N1K distributed switch. If the VSM is down it doesn't interrupt traffic flow because it isn't in the data plane, only the management plane.
If you have an active/standby deployment and the primary VSM goes down the secondary VSM is rebooted and becomse the active VSM, while the secondary VSM is rebooting there will be a few minutes where you can't access the VSM management. Data flow is not interrupted during this failover event though, only management.
Introduction This article will help you understand the steps on how to
download the UCS licenses from the Cisco Systems website and then
installing it on the UCS. The redacted (blue lines) just covers up
certain numbers for privacy please do not take them...
Introduction This article will help you understand and educate the
customer on how to clear their "expired licenses"
(license-graceperiod-expired) from their UCS-M. If a customer just
purchased a license and needs a step by step guide on how to download
Introduction Prepositioning is a powerful tools on the WAAS platform but
it is not always easy to figure out why your jobs are failing when
trying to retrieve the files.Here is a method that should help you to
figure out the reason why they are not succes...