Kevin,
The connection between the client and the SGD server can be devided
into two streams:
1. The webtop stream, http(s), this one can be loadbalanced as stated before
2. The emulator stream, AIP (Adaptive Internet Protocol), this stream
can not be loadbalanced via an external loadbalancer since SGD will
do de loadbalancing.
If the SGD server in the array decide to start an emulator session on
a different SGD server (then where the webtop is running) and the
emulator stream goes through the same loadbalancing host (same
Virtual IP on the loadbalancer) the loadbalancer will try to start
the emulator session on the wrong SGD server. This will fail.
For example a good configuration:
2 SGD servers behind a loadbalancer.
SGD server 1 external name: sgd-server1.domain.com
SGD server 2 external name: sgd-server2.domain.com
Webtop sessions are behind a loadbalancer, external name: sgd.domain.com
Loadbalancer directs the session to for instance sgd-server1.domain.com
Client connects to http://sgd.domain.com (or https://sgd.domain.com)
On the client an emullator session will be set up to the SGD server
based on the decision made by the SGD Array for instance sgd-server2.domain.com
Here the webtop session runs on one server and the emulator on the
other. This is possible when the Arrays is not set to "Server Hosting
the User Session"- loadbalancing (This is the default) or when
Geographical Loadbalancing is used.
Hopefully this is clear. If not, I will make a new post on my blog
with pictures to make it more clear (when I find the time :) )
(http://virtualdesktops.blogspot.com/)
- Remold
At 08:45 AM 1/26/2008, you wrote:
Hi Remold,
Thank you for the answer (:
however im not clear, could you please let me know more detail.
what do you mean that "use seperate addresses for the emulator session"
Best Regards,
Kevin.
2008/1/26, Remold Krol | Everett <[EMAIL PROTECTED]>:
> Kevin,
>
> For the webtop-session any loadbalancer can be used if the
> loadbalancer can and is set to at leas host-based persistency. I
> mostly use session- or cookie-based.
>
> Keep in mind that you use seperate addresses for the emulator
> sessions (don't use the loadbalancer for those or create seperate
> VIPs), since SSGD can be configured to not always start the
> emulator-sessions on the same server as were the weptop-session is living.
>
> - Remold
>
> At 12:52 AM 1/17/2008, kevin kim wrote:
> >Hi all,
> >
> >I have a question about webtop loadbalancing via L4 switch.
> >is there any special requirement setting for L4 switch or SSGD4.4??
> >if anyone has like this experience, please let me know.
> >
> >any help will be appreciated.
> >
> >kevin,
>
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