I'm sure you've tried this, but if the gateway doesnt change the source IP
address, a hashing balancing metric should maintain persistence.
Jim Daly
Foundry Networks
Sales Manager - Service Providers
Silicon Valley Region
408-206-6665
jamesIZZATfoundrynet.com
Find out why more than 2,700 of the world's leading ISPs and enterprises
trust their network to Foundry's award-winning Gigabit Ethernet switches,
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-----Original Message-----
From: owner-lb-lIZZATvegan.net [mailto:owner-lb-lIZZATvegan.net]On Behalf Of
tony bourke
Sent: Friday, January 12, 2001 10:35 AM
To: lb-lIZZATvegan.net
Subject: Re: [load balancing] Load balancing WAP servers (persistance
problems)
Hi Phil,
This is actually the first WAP issue/question I've ever seen, which is a
sign that we'll probably see more :)
I'd be out of ideas as well. I'm assuming WAP doesn't support SSL, which
is the only other method of persistence that I know of.
There are some vendors on this list, so perhaps they have some insight
they can share with you on stuff coming down the pipe to address this type
of scenario.
Tony
On Fri, 12 Jan 2001, Phil Helliwell
wrote:
>
> Hi
>
> Just a quick question to see if anyone had managed to load balance
> WAP servers.
>
> The problem is that we're trying to load balance servers (serving
> wml content on port 80). The requests appear to come to us from
> the wap gateways, it seems that during the same 'connection' the
> same client can switch gateways. However, we need to use some kind
> of persistance on the pool of wap servers.
>
> We can't use cookies 'cos the cookies don't get through to the
> wap browser. I'm not sure if we could insert some kind of HTTP
> header, but how would the WAP gateway handle that?
> The switching of gateways breaks simple persistance. We can't put
> anything in the URI request due to the application, so I'm
> kinda out of ideas.
>
> We're using BIG-IP (hence the F5 speak) but we do have a 3DNS
> system in place (doing something else at the moment) so I don't
> know if we could do some kind of topology thing. Another problem
> is that the WAP gateways seem to behave pretty badly with regards
> to respecting TTLs on a DNS lookup.
>
> Many Thanks
>
> Phil
>
> --
> Phil Helliwell
>
-------------- -- ---- ---- --- - - - - - -- - - - - - -
Tony Bourke tonyIZZATvegan.net
This archive was generated by hypermail 2b30 : Fri Jan 12 2001 - 13:54:19 EST