Forum Discussion
Dazzla_20011
Jan 11, 2011Nimbostratus
Bluecoat Internet Monitor
Hi,
Just wondered if someone could help me. We've set up our F5 LTM pair to load balance outbound internet requests via two bluecoat proxies which are located at 2 diifferent data centres. We're using SNAT as the bluecoat proxies don't have a default route via the F5 LTM. All is working fine its just the monitor I would like to optimize.
Currently we are using two monitors for each bluecoat pool member. A icmp ping to check the bluecoat is available and google udp monitor to check the availability of the internet via each data centre. The problem is the google udp monitor isn't sent via the bluecoat box so there could be scenario where the bluecoat responds to ping and the internet monitor is up but for some reason internet access via the bluecoat isn't working. is it possible to force the internet monitor via the bluecoat?
How have other people configured the F5 to load balance outbound internet access?
Thanks
Darren
- Chris_MillerAltostratusYou could use transparent HTTP monitors.
Transparent Specifies whether the monitor operates in transparent mode. A monitor in transparent mode uses a path through the associated pool members or nodes to monitor the aliased destination (that is, it monitors the Alias Address-Alias Service Port combination specified in the monitor). The default is No. Yes: Specifies that the monitor operates in transparent mode. No: Specifies that the monitor does not operate in transparent mode.
- Chris_MillerAltostratusBy the way, people typically use "transparent ICMP" monitors in this case if they're monitoring a link. Since you're monitoring a proxy, I just assumed you'd want something more but that's your call.
- HamishCirrocumulusThe last time I set this up I just used several website checks. e.g. news.bbc.co.uk, an external site of our own and a couple of others... Then just set a minimum number of 'Up' monitors and away you go...
- Dazzla_20011NimbostratusI'm struggling to get this working. I've created the follwing.
- Chris_MillerAltostratusWhat version of LTM are you running? HTTP monitors can be a bit complex.
- Dazzla_20011Nimbostratus
- Chris_MillerAltostratusI don't know what's wrong with me. I glanced right over the monitor and didn't notice how you were formatting it, just noticed that GET was lower case.
GET / HTTP/1.1\r\nHost: www.google.co.uk\r\nConnection: Close
- Dazzla_20011NimbostratusThaks very much for your speedy responses. As you have probably guessed I'm new to F5 world and just starting to pick it up.
- Chris_MillerAltostratusPosted By Dazzla on 01/13/2011 08:41 AM
Did this monitor work and are you seeing the logs you'd expect?
- Dazzla_20011NimbostratusI set up the http monitor without transparent and it was up but I'm not seeing any logs on the firewall or the monitor. From my understanding I would expect to see logs from the F5 to google.
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