Still celebrating National IT Professionals Day with 3 months of free Premium Membership. Use Code ITDAY17

x
?
Solved

multiple ESX host network traffic

Posted on 2010-11-26
3
Medium Priority
?
909 Views
Last Modified: 2012-05-10
I am looking into optimizing traffic between VM's on multiple ESX hosts, and falling a bit short in figuring out which method would work best:

Currently the majority of my company connects via Terminal Servers over a private MPLS network.  The Terminal Servers are hosted across two ESX Servers.  The majority of our main applications are hosted on a 3rd ESX server.

My Corporate office is local to the servers and runs most of the software directly from their PC's.

The Corporate office vs Branch offices (coming in over MPLS) vs Servers are all already split across a few VLAN's to help isolate traffic.

What I am looking into/wondering is if it would be possible and beneficial to look into adding another 2 port NIC card onto my ESX hosts which is designed to handle traffic from a VM on one ESX to a VM on another VM - and if it is possible to do without modifying settings on the VM's themselves.  Specifically setting up routes in the ESX hosts saying that any traffic going to specific IP's/range go over the other two NIC's.

Is that possible? Will it function? and would there be an advantage to doing this?

The connections are all currently 1GB to 1GB switches and there are 2 NIC's for the main LAN traffic.  While it doesn't seem we are saturating the network yet, at the same time going over those 2 NIC's we have all of the information going from the TS to the user, plus all of the information going from the TS to the Application server.  I ultimately want to isolate that without having to modify each of the VM's.
0
Comment
Question by:americaneldercare
[X]
Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people just like you are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
  • 2
3 Comments
 
LVL 79

Accepted Solution

by:
lrmoore earned 2000 total points
ID: 34218944
You could do this easily enough with simple routing on the VM itself and virtual dual-NIC VM's.
One virtual NIC has default gateway assigned, other Virtual NIC used specifically for TS-to-App server traffic. I would put the end user nic on one VLAN and the application server traffic on a separate vlan / ip subnet to segregate the traffic. If traffic to the application server needs to be routed, then simply add a static route to the 2nd NIC for that traffic only.
This is probably simplest method without doing something like installing the Cisco virtual switch onto the ESX host and maybe getting some advanced policy routing on the virtual switch.
I don't think you will have any luck any other way because the ESX host simply doesn't see the IP traffic coming from the VM server.
0
 

Author Comment

by:americaneldercare
ID: 34218980
I had a feeling that was the answer. It is simple/easy true, but also a bit time consuming as I need to modify 20 VM's - and make sure I don't screw up any routes.  That is why I was hoping for a solution on the ESX box.

That changes the debate then to if I should just add a new NIC to the team that already exists or go for the backend routing method.
0
 
LVL 79

Expert Comment

by:lrmoore
ID: 34219013
Simplest probably just add a new NIC to the team if they are setup as etherchannel to the switch.
0

Featured Post

How to Use the Help Bell

Need to boost the visibility of your question for solutions? Use the Experts Exchange Help Bell to confirm priority levels and contact subject-matter experts for question attention.  Check out this how-to article for more information.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Originally, this post was published on Monitis Blog, you can check it here . It goes without saying that technology has transformed society and the very nature of how we live, work, and communicate in ways that would’ve been incomprehensible 5 ye…
If you’re involved with your company’s wide area network (WAN), you’ve probably heard about SD-WANs. They’re the “boy wonder” of networking, ostensibly allowing companies to replace expensive MPLS lines with low-cost Internet access. But, are they …
There's a multitude of different network monitoring solutions out there, and you're probably wondering what makes NetCrunch so special. It's completely agentless, but does let you create an agent, if you desire. It offers powerful scalability …
Michael from AdRem Software explains how to view the most utilized and worst performing nodes in your network, by accessing the Top Charts view in NetCrunch network monitor (https://www.adremsoft.com/). Top Charts is a view in which you can set seve…

705 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