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Re: [lwip-users] Question about pppos sometimes fail to reach internet
From: |
Sylvain Rochet |
Subject: |
Re: [lwip-users] Question about pppos sometimes fail to reach internet |
Date: |
Sun, 19 Feb 2017 17:34:35 +0100 |
User-agent: |
Mutt/1.5.23 (2014-03-12) |
Hi Axel,
On Mon, Feb 20, 2017 at 12:24:29AM +0800, Axel Lin wrote:
> Hi,
> I got below log after ppp_connect() success:
(...)
> [00:14:29:361] status_cb: Connected␍␊
> [00:14:29:361] our_ipaddr = 10.0.2.66␍␊
> [00:14:29:361] his_ipaddr = 10.0.2.55␍␊
> [00:14:29:361] netmask = 255.255.255.255␍␊
> [00:14:29:361] dns1 = 10.0.2.55␍␊
> [00:14:29:375] dns2 = 10.0.2.55␍␊
> [00:14:29:375] local IP address 10.0.2.66␍␊
> [00:14:29:375] remote IP address 10.0.2.55␍␊
> [00:14:29:375] primary DNS address 10.0.2.55␍␊
> [00:14:29:375] secondary DNS address 10.0.2.55␍␊
> [00:14:29:388] ppp phase changed[0]: phase=10␍␊
> [00:14:29:398] Network ready IP: 10.0.2.66␍␊
> [00:14:29:426] // connect fails
> [00:14:29:449] pppos_netif_output[0]: proto=0x21, len = 65␍␊
> [00:14:35:552] // connect fails, retry
> [00:14:35:592] pppos_netif_output[0]: proto=0x21, len = 65␍␊
> [00:14:41:673] // connect fails, retry
> [00:14:41:717] pppos_netif_output[0]: proto=0x21, len = 65␍␊
> ....
>
> Sometimes the device ping 8.8.8.8 always fails.i.e. it can not reach internet.
> But it's fine to ping 10.0.2.66 or 10.0.2.55.
> Above log seems does not show any error.
> Which part could be wrong or which part should I check about such issue?
It looks like your modem is not forwarding packets. Which one it is so
we can prevent using it in our designs ? ;-)
Sylvain
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