Hi Vijay, 

Yes. It can reply to but won’t originate keepalives.

Regards,
Florin

> On Jun 9, 2021, at 11:04 PM, Vijay Kumar <vjkumar2...@gmail.com> wrote:
> 
> Hi Florin,
> 
> Thanks for the information. It's a good starting point for me
> 
> "VPP’s tcp implementation does not support keepalives" ==========> I assume 
> VPP does not initiate one but can respond to any KA sent by the peer?
> 
> Is this understanding right?
> 
> 
> Regards.
> 
> On Wed, Jun 9, 2021 at 8:00 PM Florin Coras <fcoras.li...@gmail.com 
> <mailto:fcoras.li...@gmail.com>> wrote:
> Hi Vijay, 
> 
> VPP’s tcp implementation does not support keepalives so I’m assuming you’d 
> like to intercept/drop packets that flow through vpp. As far as I know, 
> there’s no straight forward way to do that. So you might have to implement a 
> tcp connection tracker and some heuristic to detect keepalives or a 
> transparent tcp proxy. 
> 
> Regards, 
> Florin
> 
>> On Jun 9, 2021, at 5:14 AM, Vijay Kumar <vjkumar2...@gmail.com 
>> <mailto:vjkumar2...@gmail.com>> wrote:
>> 
>> Hi experts,
>> 
>> Is there any way in which one can control TCP KA sending in VPP?
>> 
>> On Sat, Jun 5, 2021 at 10:48 PM Vijay Kumar via lists.fd.io 
>> <http://lists.fd.io/> <vjkumar2003=gmail....@lists.fd.io 
>> <mailto:gmail....@lists.fd.io>> wrote:
>> Hi,
>> 
>> Is there any way we can control TCP graph node KA sending? 
>> 
>> My GW device is running VPP and connects with mobile phones. I have a 
>> requirement like my GW VPP must not send TCP KA if there is already traffic 
>> flowing with the peers (mobile phones). This is to prevent mobile phone 
>> batteries getting drained out unnecessarily.
>> 
>> If there is no config to control this, is there any suggestion to start/stop 
>> KA at run-time?
>> 
>> 
>> 
>> Regards.
>> 
>> 
>> 
>> 
>> 
>> 
> 

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