Information Technology Reference
In-Depth Information
This is a great way to explore the relationships between the distributed switch and other com-
ponents in the environment.
The Manage tab is an area you've already seen and will see again throughout this chapter; in
particular, you've been working in the Settings section of the Manage tab quite a bit, and you'll
continue to do so as you start creating distributed port groups. The Manage tab also includes
the following sections:
In the Alarm Dei nitions section, you'll be able to create custom alarms for monitor-
ing. This topic is covered in more depth in Chapter 13, “Monitoring VMware vSphere
Performance.”
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The Tags section allows VMware administrators to assign
tags
to objects within the vSphere
Web Client and then use the search functionality to quickly and easily i nd all the objects
with a certain tag.
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The Permissions section shows you the roles that have been assigned to various users or
groups for the selected distributed switch. Note that in order to change these permissions,
though, you'll have to work with the datacenter object or folder in which the distributed
switch is stored.
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The Network Protocol Proi les section allows you to create proi les that are associated with
a distributed port group. These proi les help shape how IPv4 and/or IPv6 are coni gured
for VMs attached to a distributed port group with an associated proi le.
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The Ports section provides a list of all the ports on the distributed switch and their current
status.
Finally, the Resource Allocation section is where you'll create network resource pools
for use with Network I/O Control, a topic we'll discuss later in Chapter 11, “Managing
Resource Allocation.”
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On the Monitor tab, there are four sections:
The Issues section shows issues and/or alarms pertaining to a distributed switch.
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The Tasks and Events sections provide insight into recently performed tasks and a list
of events. You could use these sections to see which user performed a certain task or to
review various events pertaining to the selected distributed switch.
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The Health section centralizes health information for the distributed switch, such as
VLAN checks, MTU checks, and other health checks.
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The Health section contains some rather important functionality, so let's dig a little deeper
into that section in particular.
Using Health Checks and Network Rollback
The vSphere Distributed Switch Health Check feature was added in vSphere 5.1 and is avail-
able only when you're using a version 5.1.0 or version 5.5.0 distributed switch. The idea behind
the health check feature is to help VMware administrators identify mismatched VLAN
