• Status: Solved
  • Priority: Medium
  • Security: Public
  • Views: 324
  • Last Modified:

redundant switching for vmware

Right now i have two vmware hosts and two NAS devices for storage of my VMs.  I would like to add a second switch to the environment to ensure the network is redundant as well.

I have just added a quad port networking card to each vm host so they have eight NICs each.

I am looking at the networking for each host and i have three vswitches setup.  vswitch0 has two physical adapters attached to it, vswitch1 has one NIC and vswitch2 has one NIC.

I am under the impression that i could add two more physical NICs to vswitch0 and plug them into a second physical switch.  I would do the same for the other two remaining NICs and vswitch1 and vswitch2.

Is there anything i need to configure within the networking settings of the hosts, or do i just plug the new NICs into a second physical switch and and assign them to the vswitches?

Any help is appreciated.  Hope this question is clear.  the goal is to have a second physical switch that will act as a backup if the primary one fails.  Thanks!
0
IKtech
Asked:
IKtech
  • 5
  • 4
  • 2
1 Solution
 
asavenerCommented:
Yes, you can do it that way.  By default, I think the first physical NIC will be active and the others will be standby.

How many interfaces do you have on your NAS devices?
0
 
Andrew Hancock (VMware vExpert / EE MVE^2)VMware and Virtualization ConsultantCommented:
You need to match the Teaming Policy to the Physical Switch configuration. You must also connect your two physical switches in a LAG configuration.

configure trunks on the switches, or etherchannel or portgroups, depends on what switches you have.

also make sure for redundancy you select a network interface, and a seperate interface on your quad network interface.

If you want to read more on networking in VMware ESX/ESXi, then I recommend the following:-

I would also recommend reading through the Networking Sections of the following guides to gain a better understanding of Networking in VMware ESX/ESXi.

Pages 13 - 73 Discuss Networking in Detail, including trunks, VLANs, switches, and load balancing

ESXi Configuration Guide ESXi 4.1
http://www.vmware.com/pdf/vsphere4/r41/vsp_41_esxi_server_config.pdf

Virtual Networking
http://www.vmware.com/technical-resources/virtual-networking/virtual-networks.html

Virtual Networking Concepts
http://www.vmware.com/files/pdf/virtual_networking_concepts.pdf
0
 
IKtechAuthor Commented:
two NICs on each NAS
0
Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

 
IKtechAuthor Commented:
@hanccocka
I have cisco switches.  Could you elaborate a little more on how to setup the LAG configuration?

Sorry i am a bit confused by what you are recommending.  Thanks!
0
 
asavenerCommented:
OK.  If I were doing it, I'd do something like this:

NAS1
   NIC1  172.30.15.1 - Switch 1
   NIC2  172.29.15.1 - Switch 2

NAS2
   NIC1  172.30.15.2 - Switch 1
   NIC2  172.29.15.2 - Switch 2

VMHost
   vSwitch1 - 172.30.15.5 - Switch1
      NIC1 - Active
      NIC2 - Standby
   vSwitch2 - 172.29.15.5 - Switch2
      NIC3 - Active
      NIC4 - Standby


This give you multipath IO to your NAS boxes, provides redundant physical paths, and provides redundant logical paths.  It will survive almost all user errors.  (Trip over a power cable, unplug a patch cable, duplicate an IP address, etc.)
0
 
asavenerCommented:
You do not want to use link aggregation.  VMware ESXi boxes don't support round-robin or any of the really fancy performance boosting tricks.
0
 
IKtechAuthor Commented:
i have the qnap NAS NICs setup in active backup mode with only one ip address.  Do you think that will work ok or should i go with the multipath setup?
0
 
asavenerCommented:
Yes, multipath is recommended.

MultiLINK, link aggregation, LAG, EtherChannel, whatever you want to call it, is not recommended.
0
 
IKtechAuthor Commented:
i have included a screen shot of what my networking looks like on one of vmware hosts.

Do i need to add a second ip address for each vmkernel port on vswitch2?  I am assuming i will need to add a second ip for the vmkerel port on vswitch0 as well.

Can i use all the same subnet for the IPs including the two NICs on the storage device?

Keep in mind i have another four physical adapters to use for the host.

thanks again for the advice.
hostNetwork.PNG
0
 
asavenerCommented:
It would be preferred not to have iSCSI and regular network traffic on the same interface.
0
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

Featured Post

Improve Your Query Performance Tuning

In this FREE six-day email course, you'll learn from Janis Griffin, Database Performance Evangelist. She'll teach 12 steps that you can use to optimize your queries as much as possible and see measurable results in your work. Get started today!

  • 5
  • 4
  • 2
Tackle projects and never again get stuck behind a technical roadblock.
Join Now