Re: [lwip-users] TCP Sessions Scale Limit

[Anil kumar]

Below is the error i received for each session:

Could you please suggest what macros i should look into

TCP

        xmit: 27703

        recv: 1617

        fw: 0

        drop: 1180

        chkerr: 0

        lenerr: 0

        memerr: 20829

        rterr: 0

        proterr: 1180

        opterr: 0

        err: 0

        cachehit: 0

On 27 February 2018 at 18:42, Simon Goldschmidt <address@hidden> wrote:

Anil kumar wrote:
> what is the maximum TCP Session limit tested. 

None that I know of. But I'd expect things to get slow, eventually...

> I am trying to configure 2000 LDP Session i am seeing issues (TCP Errors)
>
> What would be suggested macro values to be tuned in opt.h such that i can scale TCP Sessions.

Enabled LWIP_STATS and check the stats for an 'err' value.

Also, check a wireshark log to see what's wrong. If you have 2000 clients, your ARP table needs to be big enough, too.

Simon

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With Regards

Anil Kumar S N