CSS ACTIVE/ACTIVE SCENARIO WITH JUST TWO SERVERS ??? POSSIBLE??

[4rseshan]

Hi

I'm gonna have a setup of TWO CSS11503 Content Switches with standard WEBNS feature set

in an ACTIVE / ACTIVE VIP and Virtual interface redundancy scenario for load-balancing just

two web servers initially.

Can I hv this setup up & running if I configure the two servers with different default

gateway addresses on the private side and two static routes in the private side Layer3

for two different VIP addresses in the public side ??

Any better suggestions for this scenario.

Thanx

[Gilles Dufour]

Why do you want active/active ?

What do you expect from this ?

What are the requirements for the design ?

Do you have 2 NICs on the servers ?

How many websites/Virtual IP ?

I would personally not go for active/active but active standby or box-to-box redundancy

Regards,

Gilles.

[4rseshan]

Hi Gillies

thanx for your feedback....

The current client requirement is to have ACTIVE / ACTIVE CSS Scenario for

load balancing their current intranet report servers (two nos).

The client has seen the ACTIVE / ACTIVE design from

the website and prefers the same for two servers currently.

Yes.... Both the Servers have DUAL NIC to connect to two L2 switches in the

server side.

Currently therez only one Virtual IP address...

BR

Rajesh

[gmiiller]

Firstly - what Gilles said.

Having said that, I'm using some content switches in active/active modes in a couple of places in a geographically distributed gateway. Active/Active lets us improve our redundancy characteristics and allow for device failures as well as link failures between the gateways.

There are lots of complexities that arise if you take this path - you will need to do a lot of logical math and testing about traffic symmetry under all of the different failure conditions, because you introduce the possibility that response traffic could come back at L2/L3 through a different CSS than the request traffic.