Forum Discussion

Cirrus

Apr 16, 2020

Solved

What happen when we enable HTTP/2 in an existing VIP.

Hi All, Hope you all are doing good! I have BIG-IP LTM module running on 13.1.1.4 version (and its in HA) , which means as per me is that version is 13.1.1 and build is 4 please correct if i ...

application delivery

BIG-IP

LTM

Simon_Blakely
Apr 16, 2020
Actually, you can't on 13.1.1.4, as NPN is no longer supported.

K04412053: Overview of the BIG-IP HTTP/2 profile

Activation Modes
ALPN
Specifies how the BIG-IP system negotiates HTTP/2 protocol. By default, the BIG-IP system accepts Application Layer Protocol Negotiation (ALPN).
Beginning in version 13.1.0, the BIG-IP system no longer supports Next Protocol Negotiation (NPN), which is now deprecated and replaced by the industry standard ALPN published as RFC 7301. Prior to BIG-IP 13.1.0, the NPN is accepted by the BIG-IP system.

Sorry - you don't really have any options to safely implement HTTP/2.

Simon_Blakely

Employee

Apr 16, 2020

You don't have too many choices

1) Disable ALPN and rely on NPN, which is deprecated and has limited browser support

2) Enable HTTP/2 with ALPN, and hope that you don't get connections that cause tmm to restart

3) push for an upgrade to 13.1.3.3 before enabling HTTP/2

RAQS
Cirrus
Apr 16, 2020
Hi Blakely,

Thanks for your prompt response.

So coming to option 1 , how we will achieve that in version 13.1.1.4 ==> Steps to do that

Option 2 is like to leave thing on fate and wait & watch.

Option 3 we will do but that will take time.

So, can you please help with Option 1 and how i will perform steps via GUI or CLI.

Regards,
Shekhars
- Simon_Blakely
  Employee
  Apr 16, 2020
  Actually, you can't on 13.1.1.4, as NPN is no longer supported.
  
  K04412053: Overview of the BIG-IP HTTP/2 profile
  
  Activation Modes
  ALPN
  Specifies how the BIG-IP system negotiates HTTP/2 protocol. By default, the BIG-IP system accepts Application Layer Protocol Negotiation (ALPN).
  Beginning in version 13.1.0, the BIG-IP system no longer supports Next Protocol Negotiation (NPN), which is now deprecated and replaced by the industry standard ALPN published as RFC 7301. Prior to BIG-IP 13.1.0, the NPN is accepted by the BIG-IP system.
  
  Sorry - you don't really have any options to safely implement HTTP/2.
- RAQS
  Cirrus
  Apr 16, 2020
  Thanks Blakely. I really appreciate you time and effort.
  
  So, i have only one option to upgrade,
  
  Regards,
  Shekhars