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6.0

EtherChannel - Load Balancing on a Cisco 3560 – Need help - Please read!

Asked by wtango in Miscellaneous Networking, Enterprise Firewalls, Networking Hardware Firewalls

Tags: cisco, etherchannel, 3560, load, balancing

Hello all,
I need help configuring a Cisco 3560 switch. Here’s the situation, the switch is located at the datacenter. It should be the main gateway. It suppose to have two fiber channels incoming from the ISP (1G each), and one fiber going to another geographical location of the data center (another gage). I would like to create a virtual (EtherChannel if that’s the appropriate solution) on both the main incoming fiber channels from our ISP. These two ports should handle to different networks (class B and C). The networks should talk to each other and should be accessible to and from the world.
How does it work?
If each is 1G does that mean that the combined logical line will be 2G?
Do I need to configure anything to make it load balanced?
How can I configure it (exact CLI)?
Can I use CNA?
Does the ISP need to configure something on their hand?

The 3rd fiber channel should go to a different Cisco switch on a different gerographical location (2970). Should I configure the FC port in a special way since there is a nother Cisco switch on the other side?

Last time I tried to configure the FCs (without EtherChannel) the networks (class B and C) could see each other and when they did, they couldn’t see the world. I was told I should activate IP routing.
How many VLANs should I create?
Should I create a single VLAN for the 2 networks and a VLAN for each single fiber that goes to the ISP?
How does EtherChannel change the VLAN structure?

I was reading about unicast, broadcast filtering, should I activate this filters to protect myself from denial of service? What is the right % I should use?

I was using CLI the first time I configured it, now I have started working with the CNA. Is that a good enough substitute?

This is the first time really that I am configuring something like that. Any help would be greatly appreciated!

Cheers,
WT.
[+][-]07/25/05 10:05 AM, ID: 14519617Accepted Solution

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About this solution

Zones: Miscellaneous Networking, Enterprise Firewalls, Networking Hardware Firewalls
Tags: cisco, etherchannel, 3560, load, balancing
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Solution Provided By: cschuett
Participating Experts: 2
Solution Grade: B
 
[+][-]07/25/05 02:15 AM, ID: 14516703Expert Comment

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