P300 Multipoint on same Switch

  • 1
  • Question
  • Updated 1 year ago
  • Answered
HI Team

We've been provided a wireless bridge solution, however it doesnt appear to be working for us. As usual, they sell us the product then when it comes to problems they just handball it to tech support.

We called tech support and they need to investigate it.

The solution was 1st pair from building one to building two, then another pair from building two to building three. Bassically in building two there is a managed switch that connects the access points to pass the traffic through, however when they are both connected, wireless connection loses connection. If one of the access points on the switch is disconnected with POE injector added, the wireless connects no problems at all.

It appears that when 2 access points connected to the same switch, it conflicts. And I cant find any guide regarding this particular setup.

Anyone with some experience, please advise.

Thanks
Photo of Nublet

Nublet

  • 9 Posts
  • 0 Reply Likes

Posted 1 year ago

  • 1
Photo of Michael Brado

Michael Brado, Official Rep

  • 2183 Posts
  • 301 Reply Likes
Did you get further assistance from Tech Support?  What kind of managed switch was that?
Does the pair of bridge links form a network loop, such that switch spanning-tree might be blocking a port?
Or is it a PoE power draw on the switch issue, if using a PoE injector on one P300 in the middle solves the problem?
(Edited)
Photo of Nublet

Nublet

  • 9 Posts
  • 0 Reply Likes
Nope, I didnt get any update from tech support.

The switch is a Cisco managed switch. Theres no network loop at all, all ports are forwarding. We are able to get from AP1 to AP2 (Pair 1), and also able to reach AP3 but not from AP3 to AP4 as there is no wireless establishment at all. We know theres no network issues, as the routing is working and that it is powering up both devices on the managed switch. Problem lies the wireless connectivity between AP3 and AP4.
Photo of Michael Brado

Michael Brado, Official Rep

  • 2183 Posts
  • 301 Reply Likes
Thanks, we can rule out STP on the switch blocking a network loop.

If you're in the central spot and disconnected AP2 from the switch, can you get the AP3 to AP4 link to come up?
If you left AP2 connected, and use a PoE injector on AP3, you say that will bring up AP3-AP4 link?
(Might that be indicating not enough PoE for both AP2 and AP3 on the switch?  Can you be sure to separate AP2
and AP3 physically apart on the switch, if one block has dispersed PoE to 3 other devices and hasn't enough left?)
Photo of Nublet

Nublet

  • 9 Posts
  • 0 Reply Likes
Yes I've already checked, its got enough power to power up many devices on the switch. However checking AP3, its got wireless status down? What does this mean?
Photo of Alan Rothenstreich

Alan Rothenstreich

  • 63 Posts
  • 11 Reply Likes
What mode are the P300's running in?  Root or non-root?  If at building two they are both running in non-root mode and the P300 sees access to the internet, it will not allow the wireless connection since it believes there is internet access.
Photo of Nublet

Nublet

  • 9 Posts
  • 0 Reply Likes
I received a call from Ruckus and apparently you cant have 2 pairs on the same switch as its a known issue. We need to split them into 2 different switches.

I hope this is not the issue as having 2 switches in between is a little excessive for wireless bridge.

Has you guys heard of this?
Photo of Alan Rothenstreich

Alan Rothenstreich

  • 63 Posts
  • 11 Reply Likes
I am confused what you mean by on the same switch and two pairs.  We have a non-root and root on the same switch.  I do not see a reason for you to have two non-roots on the same switch.  If you do, then Ruckus is correct.  Once one connects the other P300 will see internet access and not try to connect to the root.  Do you have diagram to share?
Photo of Nublet

Nublet

  • 9 Posts
  • 0 Reply Likes
Photo of Nublet

Nublet

  • 9 Posts
  • 0 Reply Likes
Pleasee my attached image. Thanks
Photo of Alan Rothenstreich

Alan Rothenstreich

  • 63 Posts
  • 11 Reply Likes
Where is your broadband connection? A, B or C. AP2 and 3 are set up as root?
Photo of Nublet

Nublet

  • 9 Posts
  • 0 Reply Likes
The main site is A, this is where the internet terminates. AP2 is set to non-root, and AP3 is root. I did try both non-root but still didnt work. Because of this, we added another switch in B and have a straight-through connected between the switch, and that didnt make any difference.
Photo of Alan Rothenstreich

Alan Rothenstreich

  • 63 Posts
  • 11 Reply Likes
I have a similar setup using sg300 Cisco switches. Everything has been working. Root and non-root at site b is right. Have you checked the mesh passphrases? If you do a scan do all the p300s appear?
Photo of Michael Brado

Michael Brado, Official Rep

  • 2183 Posts
  • 301 Reply Likes
I quick check of Knowledge base articles for "P300" finds this one on top.

KBA-5266: Why aren't my P300 bridges connecting.
https://support.ruckuswireless.com/answers/000005266

Are your RB and NRBs able to reach the Def-GW or not?  Here is text from the article.
I hope this is helpful.

Root Cause

If the NRB is able to reach the GW IP address, or if it establishes an Internet connectivity through the wire, it will shut down the wireless - design of the Mesh mechanism within the P300.

Workaround

Once the GW address is removed from the NRB, the NRB sets a wireless connection across to the RB.

Resolution

A couple of options for solutions:

1). leave the GW address in the NRB blank.
or
2). SSH into the NRB P300 and perform the following command:
  rkscli: set eth eth0 disable

The idea here is that the NRB looks for the Gateway through the wire and through the wireless
and if it finds the GW through the wire and through the wireless a loop can be created and thus
it shuts down the wireless.
It is also recommended to place the RB where the POP resides (closes to the internet).
 
Photo of Nublet

Nublet

  • 9 Posts
  • 0 Reply Likes
Thanks for that.

It looks like it just got updated yesterday, the article.

I managed to disable the interface, however still not working.

Ok, this is what I have done. I used a POE at AP4, and shutdown the interface on the switchport, bang the wireless came online - as soon as I enable the switch port, wireless goes down.

Can you guys please explain?
Photo of Nublet

Nublet

  • 9 Posts
  • 0 Reply Likes
Ok, I managed to the the bridges up and running with default gateway enabled on all of them. I have to reconfigure the wireless bridges and cisco switches. For some reason the wireless didnt like the routes that were configured. 

Anyway, I think it should be fine however will need to monitor it.
Photo of Michael Brado

Michael Brado, Official Rep

  • 2183 Posts
  • 301 Reply Likes
Hi Nublet,
   I'm glad to hear this, as I was about to suggest disabling the AP4 Eth instead of AP3 (in the middle), that would have done what you tried with the far end switch port shutdown,
thinking that end got an incorredt def-gw from DHCP.  But having your above combination of bridges and Cisco switch/router config changes to stablize the links, is good news.  Let us know if this is still good next week?  Thanks.