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Vlans, clustering and loadbalancing on cisco cat 3560g

Posted on 2006-11-17
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Last Modified: 2013-11-15
Hi networking gurus,

I need to setup 3560g switches with multiple vlans. We would like to setup switches in cluster mode (2 switches for each cluster mode) with etherchannel for clustering and load balancing, and also provide nic teaming. I have configured switches, but don't know if they are configured properly. Questions I have:

-If the vlans don't span to other switches, do we still need to configure vtp domain name. What's the significance of vtp domain anyway? Is it a requirement if vlans span on multiple switches. In my case, is it requires for clustering.
-Can loading balancing be configured in cluster mode, specially if nic teaming is desired?
-How does both clustering and load balancing works, and how to configure loadbalancing with clustering?
-what's the best way of verifying that clustering, loadbalancing and nic teaming is configured properly in the test enviroment.
-Also these switches will be connected to firewall interfaces, currently switches connected don't configured as in trunk mode connected to juniper firewall interfaces. Do you think if I configured ports as trunk port on switches which connect to firewall, should still works fine. It would be difficult to test in production environment.

I know it's a long list, but your help will be appreciated.

Thanks, Leo
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Question by:msaalim
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by:Don Johnston
ID: 17971306
It sounds like you're using etherchannel and "load balancing"...

1. VTP primary function is the creation, modification and deletion of VLAN's. It is not mandatory. If you are willing to manually manage the list of VLAN's on the switches, you do not need VTP. In order for VTP to function, all the switches participating must have the same VTP Domain Name.
2. Etherchannel is completely independent of clustering.
3. Clustering simply allows you to manage multiple switches from a single switch via a graphical interface.
For cluster configuration:
http://www.cisco.com/en/US/products/hw/switches/ps607/products_tech_note09186a00801347f8.shtml
Etherchannel simply "tricks" spanning tree into thinking there's only one link between switches so that any other links are not blocked.
For etherchannel info:
http://www.cisco.com/en/US/products/hw/switches/ps708/products_configuration_guide_chapter09186a008007f2c6.html
4. "show etherchannel" and "show etherchannel summary"

 
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by:msaalim
ID: 17982818
You mean clustering is used only for managment, not for redundancy. Our primary focus is to provide redundancy through failover. Senario would be like, each server is connected to two switches which are in redundant mode, so if one switch fails, it would not effect any traffic.
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Don Johnston earned 500 total points
ID: 17983512
>You mean clustering is used only for managment, not for redundancy.

Correct.
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