Jason Rahm introduces the overall strategy of BIG-IP DNS load balancing, and how it differs from LTM options. LB Algorithms will be covered in future videos.
I'm always amazed how often good videos such as this still overlook one critical aspect. A simple step-by-step breakdown of an actual use case. That is showing what happens in a typical situation from the moment the user types in a URL to the finished product. I see countless questions below that would help if not fully address this. I realize there are many scenarios but for the love of god folks, simply demonstrating even a basic situation would paint a clearer picture. Just my 2 cents from an old guy who's been doing and learning this 'stuff' for almost 40 years now.
I agree whole heartedly! The videos can be great and drive the concept home, but actual use case on why you would want to do this helps dumb guys like me a little more.
We have a list of videos in the queue already, but we'll get there. For now ,they are available in whiteboard version here: ua-cam.com/play/PLyqga7AXMtPNjF0Ms9ByYZtH7U46yCe0y.html
Hi, When the user asks for a particular URL, that query goes to our external DNS which has got a delegation to the GTMs for that particular URL, then what happens? the DNS passes to the user the GTM address and the user talks to the GTM? or is it the DNS who talks to the GTM and then passes the resolution to the user?
With delegation, the requests come to your primary DNS server, it delegates that request to your GTM, then the GTM responds directly to the LDNS request.
Hi guy I have config GTM between F5 DNS and LTM. Whe we config server, using heath monitor : Bigip, >>> Error: Monitor /Common/bigip from /Common/ltm_hostname : no reply from big3d: timed out Please help me
for general assistance, it's better to ask a question on DevCentral: devcentral.f5.com. Depending on the complexities of your issue, you might need a support case, but the DC audience should be able to steer you in the right direction. Try to provide any architectural details that might be significant in why big3d is not responding (firewalls in between, new GTM and/or LTM in place, etc..)
Sorry to hear we fell short of your expectations! This is an intro video to how DNS load balancing works at the response level. The individual algorithms for how to formulate that response are in our Whiteboard Wednesday series that we'll eventually convert over to the lightboard: ua-cam.com/play/PLyqga7AXMtPNjF0Ms9ByYZtH7U46yCe0y.html
I'm always amazed how often good videos such as this still overlook one critical aspect. A simple step-by-step breakdown of an actual use case. That is showing what happens in a typical situation from the moment the user types in a URL to the finished product. I see countless questions below that would help if not fully address this.
I realize there are many scenarios but for the love of god folks, simply demonstrating even a basic situation would paint a clearer picture.
Just my 2 cents from an old guy who's been doing and learning this 'stuff' for almost 40 years now.
That's a fair point, Joe. Thanks for the feedback and we'll look into that for future videos.
I agree whole heartedly! The videos can be great and drive the concept home, but actual use case on why you would want to do this helps dumb guys like me a little more.
When are the algorithms coming up with light board edition ? I guess it's been quite some time now
We have a list of videos in the queue already, but we'll get there. For now ,they are available in whiteboard version here: ua-cam.com/play/PLyqga7AXMtPNjF0Ms9ByYZtH7U46yCe0y.html
Impressive backwards writing skills
Hi, When the user asks for a particular URL, that query goes to our external DNS which has got a delegation to the GTMs for that particular URL, then what happens? the DNS passes to the user the GTM address and the user talks to the GTM? or is it the DNS who talks to the GTM and then passes the resolution to the user?
With delegation, the requests come to your primary DNS server, it delegates that request to your GTM, then the GTM responds directly to the LDNS request.
That is determined by the query type. Iterative or recursive. Usually recursive. The DNS sends the final result to the User.
is dns load balancing and cdn same??
hi, I want to ask if the GSLB Request is > 300 req & res / sec, is it reasonable or normal? please help me to explain
Completely reasonable. Even in my customer days before GTM was integrated into TMOS I was able to hit 22,000 req/sec on a low-end hardware device.
WOW
Hi guy
I have config GTM between F5 DNS and LTM.
Whe we config server, using heath monitor : Bigip,
>>> Error: Monitor /Common/bigip from /Common/ltm_hostname : no reply from big3d: timed out
Please help me
for general assistance, it's better to ask a question on DevCentral: devcentral.f5.com. Depending on the complexities of your issue, you might need a support case, but the DC audience should be able to steer you in the right direction. Try to provide any architectural details that might be significant in why big3d is not responding (firewalls in between, new GTM and/or LTM in place, etc..)
nice GTM video xD
glad you enjoyed it!
Easy.
I can't understand the logic, may be lots of terms is not familared with me...
Where he started and where did he end up? Really poor breakdown
Videos is good but could not handle marker squeaks. If possible you should filter it out :)
I never really comment, but this video expains nothing... logic is terrible.
Sorry to hear we fell short of your expectations! This is an intro video to how DNS load balancing works at the response level. The individual algorithms for how to formulate that response are in our Whiteboard Wednesday series that we'll eventually convert over to the lightboard: ua-cam.com/play/PLyqga7AXMtPNjF0Ms9ByYZtH7U46yCe0y.html