Posted on 2014-01-01
Medium Priority
Last Modified: 2014-01-27
when I connect to ESXi host through Putty and run ESXTOP command , I can see the resources activity. however I am not sure if those activities are related to ESXi host. for instance:
There is a column that says : Used By and I see underneath Vcenter with the number of megabytes received and transmitted.

in this case does it mean the number of megabyte received /transmitted by Vcenter to and from that unique ESXi host I am logged into, or from other ESXi hosts to?

Question by:jskfan
  • 2
  • 2
LVL 126

Assisted Solution

by:Andrew Hancock (VMware vExpert / EE MVE^2)
Andrew Hancock (VMware vExpert / EE MVE^2) earned 1336 total points
ID: 39750378
If vcenter is the name of your virtual machine, that is the network information received and transmitted through the network interface, does it show a

vSwitch and vmnic? if it does that shows traffic received and transmitted to and from vCenter Server VM. vCenter Server will be transmitting and receive data to ALL ESXi hosts, including the host you are on, and also other network devices, e.g. DNS servers, DHCP servers, NetBIOS, AD DCs etc

does it look like this screenshot?

ESXTOP provides us with lots of metrics, could you please screenshot the output, and upload here, to see what you are referring to.

see my EE Article, Step by Step Tutorial Instructions with Screenshots

HOW TO:  Performance Monitor vSphere 4.x or 5.0
LVL 51

Assisted Solution

Netman66 earned 664 total points
ID: 39750608
There are a number of modes that can be looked at as well.

Here is a great chart for reference.


Author Comment

ID: 39774660
Vcenter is a VM..
As you know Vcenter is connected to all ESX hosts….and the Esxtop is run on a single host Terminal, it shows Vcenter traffic, but to my understanding the traffic is to and from that ESX server only..
LVL 126

Accepted Solution

Andrew Hancock (VMware vExpert / EE MVE^2) earned 1336 total points
ID: 39774688
Yes, but vCenter will also send traffic to the LAN (e.g. DNS, DHCP, NEBIOS requests!)

Install Wireshark on your vCenter Server, and watch the comminications from vCenter Server.

It's more than just to ESXi hosts!

The Windows OS also is chatty! not just the vCenter Server application!

Interested in Network Traffic...

To learn which traffic is going across a virtual network, there's another free tool for vSphere: Xangati for ESX, a virtual appliance that tracks conversations on the virtual network. It's great for troubleshooting any virtual network issue, analyzing virtual desktop infrastructure and correlating vCenter performance stats with virtual network stats.

It's available as a fanastic FREE download here.


Author Closing Comment

ID: 39814115
Thank you

Featured Post

Free Tool: Site Down Detector

Helpful to verify reports of your own downtime, or to double check a downed website you are trying to access.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

Question has a verified solution.

Are you are experiencing a similar issue? Get a personalized answer when you ask a related question.

Have a better answer? Share it in a comment.

Join & Write a Comment

Giving access to ESXi shell console is always an issue for IT departments to other Teams, or Projects. We need to find a way so that teams can use ESXTOP for their POCs, or tests without giving them the access to ESXi host shell console with a root …
It’s time for spooky stories and consuming way too much sugar, including the many treats we’ve whipped for you in the world of tech. Check it out!
Teach the user how to install log collectors and how to configure ESXi 5.5 for remote logging Open console session and mount vCenter Server installer: Install vSphere Core Dump Collector: Install vSphere Syslog Collector: Open vSphere Client: Config…
This video shows you how to use a vSphere client to connect to your ESX host as the root user. Demonstrates the basic connection of bypassing certification set up. Demonstrates how to access the traditional view to begin managing your virtual mac…

619 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question