14 Oct
2008
14 Oct
'08
9:14 p.m.
Iñaki Baz Castillo wrote:
2008/10/13 Jiri Kuthan <jiri(a)iptel.org>rg>:
We do have garden variety proxies behind our load balancers and they are
not aware of the presence of those load balancers. The trick is to give
them all the same IP and have the balancers work one layer below. From
the IP perspective, they are all one. Or something.
Regards,
Martin
The thing here is that actually a load-balancer
vendor is free to build
stuff his way -- he is not compelled to build a proxy or B2BUA and go to
some certification authority, he is supposed to build something that
load-balances well. I'm intimately aware of some load-balancers that are
close to being a kind of "transparent proxy", which is just fine: it
doesn't
put itself in signaling and it handles routing by state table.
Well, but what I mean is that the vendor needs, not just a custom LB
which doesn't add "Via" header, but also devices behind the LB (other
proxies or gateways) being not SIP compliant in points 18.2.1 & 18.2.2
of RFC3261.