Basically any changes to the sticky/persistent part are not options :( the
hardware that's in and performing the load balancing won't be changed
because it works - the NAT portion just needs some ... horrible kludges? :)



-----Original Message-----
From: Clayton Price [mailto:[EMAIL PROTECTED]]
Sent: Sunday, 12 January 2003 10:35 AM
To: [EMAIL PROTECTED]
Subject: Re: Load balancing & NAT [7:60663]


Could you change the persistence to use cookies instead of source IP address
(assuming it is a browser based connection)?  That would allow you to still
load balance across the multiple app servers.

Clayton


""Emilia Lambros""  wrote in message
[EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> I'm looking more for a way to play with how the nat pool I have behaves
with
> IP address use.  The NAT config and translations are all working, however
I
> can't find a situation online that shows me how I can force translations
to
> not overload quite so much, or how I can make more IP addresses be used so
> my load balancing works with sticky sessions set.
>
> For as long as only 1 IP is being used, all connections to the application
> servers go to one application server.  Even with 2 IPs being used, I would
> have more of a chance of connections going to the 2nd application server
to
> create some load balancing but as I said, I'm sitting on 8500 connections
> and 1 IP being used.  I know in theory I can go up to 65K+ connections on
> that 1 IP, but I would prefer more like a couple of hundred per IP.
>
> The majority of articles I've read show how to configure, say rotary pools
> or tcp load distribution but not examples of how you can use it another
way
> that I could perhaps, adapt.  As I said though, I can't play with the
config
> because its a live environment so its a little harder to play and test
with,
> without a guarantee that it will work :)
>
>
>
> -----Original Message-----
> From: The Long and Winding Road
> [mailto:[EMAIL PROTECTED]]
> Sent: Thursday, 9 January 2003 11:24 AM
> To: [EMAIL PROTECTED]
> Subject: Re: Load balancing & NAT [7:60663]
>
>
> if you have a CCO customer account, there are a lot of articles in the TAC
> database
>
> this one is a good start, I believe.
>
>
http://www.cisco.com/en/US/customer/tech/tk648/tk361/technologies_tech_note0
> 9186a0080093fca.shtml
> watch the wrap.
>
> HTH
>
> --
> TANSTAAFL
> "there ain't no such thing as a free lunch"
>
>
>
>
> ""Emilia Lambros""  wrote in message
> [EMAIL PROTECTED]">news:[EMAIL PROTECTED]...
> > Hi all,
> >
> > I have an application being load balanced at one site (sticky sessions
set
> > such that each connection from 1 IP will continue its transactions to
the
> > same server it started on) and at another site, the users accessing the
> load
> > balanced application.
> >
> > The users come in from different office locations across private WAN
> links,
> > nat inside is on each of their interfaces and on each interface out of
the
> > router those WAN links connect to, is nat outside.
> >
> > I have changed their initial configuration based on NAT overload to an
> > interface IP address to be a pool of addresses overloaded.  I was hoping
> > that the connections would spill over to the second IP in the pool at
some
> > stage sooner than the 8500 NAT connections I have currently, but no go.
I
> > may as well have NAT'd to 1 IP again :)
> >
> > Is there a way to overload NAT, but have it using more than 1 IP in the
> > pool?  e.g. a pool of 30 IPs, its currently using 1.. I'd love the
router
> to
> > even round robin the use of IPs out of the pool but I can't play with
the
> > config to try it (live environment) and can't find any documentation
> online
> > explaining exactly what I need NAT to do/not do :(
> >
> > Thanks,
> >
> > Em :)




Message Posted at:
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