Forum Discussion
MichalSzewczyk
Nimbostratus
NimbostratusWhat is the difference between BIG-IP APM and BIG-IP LTM?
As I'm preparing for F5 101 exam, I read about BIG-IP APM and LTM. I find it hard to get a difference between them. I found a table of features : https://support.f5.com/csp/article/K66031634 , but ...
MichalSzewczykNimbostratus
NimbostratusThanks! As I understand it, BIG-IP is a full proxy in general, thus any other F5 product (e.g. LTM, but also APM or ASM) is a full proxy as well. Am I right, if I say that LTM provides overview of all the processes that happen on L4-L7? Actually I made a mistake and wanted to ask about BIG-IP APM vs LTM, not ASM.
JRahm
Admin
AdminThe proxy sits in between all client and server flows (except where explicitly bypassed like with HW acceleration) in the TMOS architecture on BIG-IP platforms. APM and ASM are plugins on-top of TMOS, and behave a little differently. For example, in iRules, an HTTP_RESPONSE event is processed before ASM (or APM) handles the response from the server, so anything you want to manipulate between ASM and the client in the response would have to happen after ASM hands it back off to TMM, and that can be done in the HTTP_RESPONSE_RELEASE event. See here for more details.