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Author Topic: AP6562 / wing 5.5 / meshconnex / DFS  (Read 5802 times)

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Offline romnet

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  • Posts: 25
AP6562 / wing 5.5 / meshconnex / DFS
« on: November 28, 2013, 05:50:39 AM »
Hi there,

I will try to sum-up a very nice network in a few words : we have 11 x AP6562 in a mesh network, running 5.5, controlled by one of them as a virtual-controler.

We did a meshconnex configuration, that is working fine on 5ghz radios (smartrf), through a wide outside area. The 2.4ghz radios are used for clients (mobile clients on vehicules mostly, third-party as hirschmann or such)

Here are my concerns, for which I got a few answers from level 2 support, but that do not satisfy me 100%, and would love some feedback from fellow moto users who could have been using such solutions :

- we want to make sure not to have any network disruption, especially in case of a meshpoint failure, or a radar detection. The problem is that with the automatic channel selection, we saw that half of APs connect to "mesh-root 1" (let's call it like that) on, let's say channel 140, and the other ones, who are more likely to be close to "mesh-root 2" all communicate through channel 100. When a radar is detected, even though we chosed the channel list according to the shortest CAC (1 minute) applicable in europe, all APs connected to "mesh-root 1" for example, would lose network if mesh-root 1 is out (radar detection, failure, etc.). they all start a new radar scan before connecting to the other neighbours on channel 140. Anyone knows how to prevent that ? any configuration I would have missed that allow us to say "ok, please make sure what channels do your neighbours use and please be ready in any case to connect to them without making a new DFS scan" ?

- does anyone have a fine-tuned example for such config, especially for optimizing available bandwidth for each root mesh, in our case mesh-root 2 is connected through a wireless backhaul (not motorola) that is only 300 meg, not 1 gig as the AP6562 might think.

Thanks for your help, below is a few relevant extracts from my conf :

meshpoint MESH
 description meshconnex policy
 meshid MESH
 beacon-format mesh-point
 control-vlan 4000
 allowed-vlans 1
 neighbor inactivity-timeout 60
 security-mode psk
 wpa2 psk 0 hellomoto
 no root
!


smart-rf-policy default
 assignable-power 5GHz min 10
 assignable-power 2.4GHz min 8
 channel-list 5GHz 100,104,108,112,116,136,140
!

profile ap6562 root-ap6562
 ip default-gateway H.E.L.O
 no autoinstall configuration
 no autoinstall firmware
 crypto ikev1 policy ikev1-default
  isakmp-proposal default encryption aes-256 group 2 hash sha
 crypto ikev2 policy ikev2-default
  isakmp-proposal default encryption aes-256 group 2 hash sha
 crypto ipsec transform-set default esp-aes-256 esp-sha-hmac
 crypto ikev1 remote-vpn
 crypto ikev2 remote-vpn
 crypto auto-ipsec-secure
 crypto load-management
 crypto remote-vpn-client
 interface radio1
  placement outdoor
  wlan CLIENTSIDE bss 1 primary
  aggregation ampdu none
  no dynamic-chain-selection
 interface radio2
  data-rates an
  rate-selection opportunistic
  placement outdoor
  meshpoint apmesh bss 1
  antenna-gain 2.0
  aggregation ampdu none
  no dynamic-chain-selection
 interface ge1
  ip dhcp trust
  qos trust dscp
  qos trust 802.1p
 interface vlan1
  ip address zeroconf secondary
 interface pppoe1
 use firewall-policy default
 ntp server NTP
 rf-domain-manager capable
 service pm sys-restart
 router ospf
 meshpoint-device MESH
  root
  monitor primary-port-link action no-root
  acs channel-width 5GHz 40MHz
!
rf-domain default
 timezone Europe/Paris
 country-code fr
 use smart-rf-policy default
!

ap6562 ROOT1
 use profile root-ap6562
 use rf-domain default
 hostname ROOT1
 device-upgrade auto
 interface radio1
  channel 1                                             
  placement outdoor
  antenna-gain 3.0
 interface radio2
  placement outdoor
 interface vlan1
  ip address ROOT1-IP/24
 use auto-provisioning-policy meshpoint
 virtual-controller
 rf-domain-manager capable
 logging on
 logging console warnings
 logging buffered debugging
 configuration-persistence
!

ap6562 meshpoint-sample
 use profile root-ap6562
 use rf-domain default
 hostname meshpoint-sample
 interface radio1
  channel 11
  placement outdoor
 interface radio2
  placement outdoor
 interface vlan1
  ip address meshpoint-sample-ip/24
!       


ap6562 sample-bridge
 use profile root-ap6562
 use rf-domain default
 hostname sample-bridge
 interface radio1
  channel 6
  placement outdoor
 interface radio2
  placement outdoor
 interface vlan1
  ip address sample-bridge-ip/24
 meshpoint-device apmesh
  no root
  no monitor primary-port-link action no-root
!! we say that we don't want to turn route, even though ge1 is up, which means that the switch behind ge1 gets vlan1 data




Thanks a lot guys, if anyone could help, that's fantastic !

Romain


Offline McNulty

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  • Posts: 217
Re: AP6562 / wing 5.5 / meshconnex / DFS
« Reply #1 on: December 01, 2013, 01:42:04 AM »
Hi, I would always use a single, defined channel for the 5GHz Mesh link and also manually set all those 5GHz radios to max power.

I don't trust smart-rf to manage the mesh!

Offline romnet

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  • Posts: 25
Re: AP6562 / wing 5.5 / meshconnex / DFS
« Reply #2 on: December 01, 2013, 01:58:16 AM »
hi,

First of all, have a good weekend, all :)

I would agree with you somehow, but I fear the consequences of a radar detection (which I saw several times in this place already) : don't know the behaviour of moto gears in such conditions :).

Apparently no-one agree (moto support, various how-tos and docs) about the use of this parameter :

path-method snr-leaf / uniform ?

also, the choice of the channel is made as 20Mhz wide whereas it was specified (profile context) :

meshpoint-device apmesh
  root
  monitor primary-port-link action no-root
  path-method snr-leaf
  acs priority-meshpoint 5GHz apmesh
  acs channel-width 5GHz 40MHz


if someone might have encountered such problem, I would love to exchange on that !

romain


Offline romnet

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  • Posts: 25
Re: AP6562 / wing 5.5 / meshconnex / DFS
« Reply #3 on: December 03, 2013, 05:37:59 PM »
hi guys,

no-one else playing with moto meshconnex here ? :)

thanks !
romain