From mboxrd@z Thu Jan 1 00:00:00 1970 Return-path: Received: from mail-vk0-f50.google.com ([209.85.213.50]:34776 "EHLO mail-vk0-f50.google.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750837AbdBUGzm (ORCPT ); Tue, 21 Feb 2017 01:55:42 -0500 Received: by mail-vk0-f50.google.com with SMTP id r136so74215180vke.1 for ; Mon, 20 Feb 2017 22:55:41 -0800 (PST) To: linux-wireless@vger.kernel.org, OpenWrt Development List From: Xuebing Wang Subject: [openwrt-devel] [linux-wireless] 802.11s mesh network can not recover after connectivity goes low and back up Message-ID: <5272d739-1ac2-a892-9b52-889fde2861c4@gmail.com> (sfid-20170221_075738_668354_CD21CB46) Date: Tue, 21 Feb 2017 14:55:37 +0800 MIME-Version: 1.0 Content-Type: text/plain; charset=utf-8; format=flowed Sender: linux-wireless-owner@vger.kernel.org List-ID: Hi Community, I am using several routers (Atheros AR9331 + OpenWRT) to build a 802.11s mesh network. I am having an issue. - Linux kernel: 3.18.29 - OpenWRT version / branch: chaos_calmer - Hardware platform: AR9331 with ath9k driver. Description of the issue: - When connectivity of a mesh node is low and connection to other nodes is lost. After connectivity is back up again, ping other nodes won't get this node to recover to connect to its peers. - Test setup: most routers are in one room, with one specific router in another room to simulate low connectivity. - I use 'iw wlan0 set txpower limit 0' to simulate low connectivity. - It's not easy to reproduce, occurrence rate is low. - I sometimes put a laptop to the isolated router and "ssh into this laptop" to generate some WiFi traffic (possible collisions). Does anyone see the similar issue? Thanks. xuebing wang