Load-balancing generic hosts between different datacenters
Hi all I have GTM F5 Load-balancer sitting in my primary Denver (USA) data center. I have two VPN firewalls sitting in theChennai (India) data center, where there is no F5 load balancer. Hence there is no GSLB. I would like to load-balance these two VPN firewalls through the Denver F5 GTM load balancer. The public IPs are completely different between the data centers. The expectation is that the end host ==> Public DNS Server ==>F5 GTM Listener (Denver) ==>Chennai (India) Datacenter (VPN Firewall). Will this be doable?
Adding LTM to GTM with different version
Hi Experts, I am looking for a KB that shows the prerequisites or consideration prior doing BIGIP ADD in GTM. Are goal is to use GSLB functionality of our GTM. Our GTM is running in 11.6.1 version and we will upgrade our LTM from 11.6.1 to 13.0. May we know if it is possible or there is an issue with this setup.DNS to LTM (Server peering for GSLB)
GTM1 (one external selfIP) LTM1 (one external selfIP, multiple internal selfIPs) I noticed that the HELP under DNS->GSLB->Server List states "Address: Spedifies an external (public) address for the device." In Guides - it is recommended to use SELF-IPs of devices to peer. BUT does it really HAVE to be 'external' ? Are there any limitations simply peering to the LTM using one of the internal selfIPs? Thanks for feedback!
GTM Topology Load Balancing - Order of Operation
Two-part question: 1.) For wide IP-level topology load balancing, what takes precedence: order, weight, or prefix length? (Assuming topology load balancing is choosing between pools based on source IP subnet). 2.) This question came about due to a situation in which I'm seeing some unexpected LB results. Given the below topology configuration (11.x) 1 IP Subnet is 10.0.1.0/29 Pool is West_DC_Pool 1 2 IP Subnet is 10.0.1.0/24 Pool is West_DC_Pool 150 3 IP Subnet is 10.0.0.0/24 Pool is East_DC_Pool 1 4 IP Subnet is 10.0.0.0/16 Pool is East_DC_Pool 100 The LDNS server IP is 10.0.1.5 (there's only one LDNS server at the moment) The East_DC_Pool is being chosen every time. Based on the logs, it seems to be comparing 1 (10.0.1.0/29 with a weight of 1) to 4 (10.0.0.0/16 with a weight of 100) and therefore 4 is winning based on a weight of 100. No mention of 2 (10.0.1.0/24 with a weight of 150) in the logs. If I delete 1, then 2 (10.0.1.0/24 with weight of 150) wins so traffic is then sent to West_DC_Pool. Now re-adding 1 (10.0.0.0/29 with weight 1) causes 4 (East_DC_Pool) to win again. Is this expected behavior??? I would have expected in all cases (with a LDNS IP of 10.0.1.5) that traffic would be routed to the West_DC_Pool based on either longest prefix match(1 would win), weight(2 would win), or order (again 1 would win). But maybe there's something about the order of operation that I'm unaware of. Thanks in advance, DaveHA GSLB between 2 DC don't work
I have an eviroment of gslb with 2 DC, each datacenter have a F5 DNS and two LTM, we have only one wide ip, the test that we are making is trying to resolve with the dns2 if we make this test is redirect to ltm2, and if we turn off the ltm2 make the redirection to ltm1. But if we make the same test on dns1 first it send the client to ltm1, but if we turn off the ltm1 don't make the redirection to ltm2. On Wide IP i have both pools dc1 and dc2 i have the topology lb method , then in each pool i have both ltm1 and ltm2 depdnding on the zone i change the order, on the pool i have topology, global availability and none lb methods. the topology rules are the next: IP 10.100.2.0/24 Pool is DC2 IP 0.0.0.0/0 Pool is DC1 Are the topology rules ok? i don't know why is not working
prober pool Round Robin with multi health monitors and with multi prober pool members
I have a question about The GTM monitors and prober pools: In my case, I have three datacenters, three gtm(one in each DC), and one prober pool, the prober pool include all three GTM, and the prober pool was set to use Round Robin. And two vs, vs1 and vs2 in different DC, each vs was configured two health monitors(each monitor with different porbe interval, eg. vs1's monitors have interval 5s and 7s, vs2's monitors have interval 9s and 11s). so, my questions is, how does the porber pool Round Robin work? Looking forward to your help, thank you.
GTM Listener with pool
Hi, I was under impression that VS working as GTM Listener with DNS profile options: GSLB: Enabled Unhandled Query Actions: Allow and Pool assigned (with some backend DNS as member). when receiving request matching configured Wide IP will answer directly. From my test (v13.0.0HF2) it looks like it's not the case, request matching Wide IP is still send to pool member. Is that by design, bug or I made some mistake in configuration? PiotrGSLB - Monitoring LTM VIP load balancing via iRule
In one of our environments we are configuring a single LTM VIP and load balancing multiple applications via an iRule. We currently have other LTM environments integrated via iQuery with our GTM for GSLB configuration and monitoring. Is there a way to monitor the VIP at the GTM level via iQuery that would give a true back-end pool status? Since, let's say, we are load balancing 100 different applications via a single VIP, if 99 of them went offline, the VIP would still show as ONLINE/GREEN. Or would we even go as far as integrating via iQuery and adding a dependency monitor of the pool itself instead?
