IPTouch stucked on "Trying to connect"

sadim
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Re: IPTouch stucked on "Trying to connect"

Post by sadim » 02 May 2017 05:02

Take a simultaneus capture at both ends and check them

sadim
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Re: IPTouch stucked on "Trying to connect"

Post by sadim » 02 May 2017 05:46

also you can try from oxe logged has root to execute a ping to a remote ip address with a packet size igual to 1200 and check with wireshark if the packet is fragmented or not (ping remote_ip_addr -s 1200)

onealcatel
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Re: IPTouch stucked on "Trying to connect"

Post by onealcatel » 02 May 2017 08:02

I tried a capture on both end, and I'm basically seeing the same :

(Alcatel is 194.x.x.131/132, Phone is 172.x.x.1)

Alcatel side : http://imgur.com/a/WrwOY
Phone side : http://imgur.com/a/ttkUj

We can see that it's requesting the lanpbx.cfg and then it's when it's trying to download the starttscip that it's failing for some reasons.

I tried various sizes for the ping, but it does not seems to be fragmented, at least I can't see the DF flag in the Wireshark capture.

sadim
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Re: IPTouch stucked on "Trying to connect"

Post by sadim » 02 May 2017 09:23

If you want help, please post files not pictures

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tgn
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Re: IPTouch stucked on "Trying to connect"

Post by tgn » 02 May 2017 11:42

the tftp file transfer is done with 1428 blocksize (as seen in your screenshots). this is the max tftp blocksize. it works on lan with mtu 1500 (ip plus tftp header). in vpn enviroment the vpn header must be taken into account too.
try to set "TFTP Max Block Size" in "IP Parameters" to a smaller value.

regards...

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