From: Steven Christall (SChristallIZZATbuildonline.com)
Date: Tue Jun 10 2003 - 20:01:46 EDT
Hi all,
I am now attempting to load balance three servers with Passive Cookie mode.
I have setup as per the WebOS 10 App Guide, DAM enabled, Metric Hash on
Group, PBind cookie in Virt
I am not really sure how to tell if it is working. This is the one area of
the Alteon that really gets to me .... no decent logs!
Can anyone tell me where / what to look at?
One question .. do I need filters enabled for this to work on the client /
server ports? I take it the cookie sniff is using layer 7 code? I read
somewhere also that I needed delayed binding .. is this implied as on by the
config above or do I need to do it somewhere
Thanks and kind regards
Steve Christall
-----Original Message-----
From: Tino [mailto:tinngoIZZAThotmail.com]
Sent: 11 June 2003 00:17
To: Nortel Alteon Forum
Subject: [load balancing] Re: ALteon FWLB/SLB/WCR Question?
We use an Alteon to redirect traffic to 2 Cache Appliances. Refer to the
redirection filter (below) where
fwlb=dis,
group 2 is where the 2 Cache devices are defined,
and metric is hash.
/cfg/slb/filt XXX
ena
actio redir
sip any
smask 0.0.0.0
dip Y.Y.Y.Y
dmask Z.Z.Z.Z
proto tcp
sport any
dport http
group 2
rport 80
With the above config, we only get hit on one Cache device. If I do
fwlb=en, then I get hits on both which is what we want.
I want to maximize the Cache hits on both Cache devices and wondering what
is the best metric to use. Thanks.
____________________________________________________________________
Reply from Henry
FWLB and WCR normally use redirection filters to forward traffic. By default
the
switch will assume you are configuring a WCR filter when you specify
a filter with proto TCP, dport of http or dport ftp. In this case the
switch will select a real server based on the DIP.
In 10.0 you can configure redirection filters to use the following:
1) SIP
2) DIP
3) BOTH
4) SIP and SPORT
This is done via the thash command under /cfg/slb/filt xxx/adv
Prior to and including 10.0 you can configure the switch to use both SIP and
DIP
via the FWLB option under /cfg/slb/filt xxx/adv.
Basic SLB will use CIP to select a real server when hash is used as the
group
metric.
Henry
----------------------------------------------------------------------------
---------------------------------------------------
----- Original Message -----
From: Tino <mailto:tinngoIZZAThotmail.com>
To: Nortel Alteon Forum <mailto:lb-lIZZATvegan.net>
Sent: Thursday, June 05, 2003 10:15 AM
Subject: ALteon FWLB/SLB/WCR Question?
Hi all,
Just wondering which part of the configuration on the Alteon determines
whether
it is FWLB,SLB or WCR since the Alteon hashing method varies depends on the
type of Load Balancing.
Regards - Tino
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