Mailinglist Archive: opensuse (769 mails)

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Re: [opensuse] Off Topic: Wired PC's Behind Client Bridge Can't Ping Each Other
On 05/09/2016 08:11 AM, Greg Freemyer wrote:
I'm very much guessing you have a bug in Client Bridge software. A
few questions:

- Can WLAN connected devices connected wirelessly to the main router
ping each outer? Can they ping the openSUSE boxes?

Yes, and they also were able to ping both openSUSE boxes. I have another router that is also in Client Bridge Mode -- that is 2 routers in Client Bridge Mode for the record, and 1 master router for a total of 3 routers on the network at the moment. If I connect a Windows laptop to the other client bridge router which is *not* the same client bridge router which I have both openSUSE boxes connected to, I can ping both openSUSE boxes. If I plug that same Windows laptop into the third ethernet port on the client bridge router both openSUSE boxes are connected to, absolutely nothing as far as those three computers pinging each other or seeing each other. Internet works fine, I can access pages at full speed and access the GUI admin pages for all three routers on the network.

Currently I'm trying Client Mode instead of Client Bridge Mode which now puts both SuSE boxes on a different subnet and I experience the same exact problem. As per my earlier email in regards to the naming being switched around in newer DD-WRT releases as to what each wireless mode, "Repeater" is now called "Client" and "Repeater Bridge" is now called "Client Bridge"


* *Repeater <>*
A) DHCP & NAT enabled
B) Clients on different subnet from primary router.
C) Computers connected to one router cannot see computers connected
to other routers in Windows Network.
* *Repeater Bridge
A) Wireless Repeater capabilities with DHCP & NAT disabled.
B) Clients on the same subnet as primary router.
C) All computers can see one another in Windows Network.
* *Universal Wireless Repeater
Uses a program/script called AutoAP to keep wireless connection with
the nearest/optimal host Access Point.

On 05/09/2016 08:11 AM, Greg Freemyer wrote:
- If you have multiple SSIDs, can, WLAN devices directly using the
same SSID as the client bridge ping each other.
I only have 1 SSID and the Client Bridge router is set to the same SSID as the master router. It sounds like you are talking about creating a VAP on the client bridge router (virtual access point) and second SSID, but I haven't tried that yet, although I am assuming I'll run into the same routing problem.

On 05/09/2016 08:11 AM, Greg Freemyer wrote:
- Can either of the boxes connected to the client bridged router ping
the Internet. (ping Can they ping other WLAN connected
boxes? Can they ping the openSUSE boxes?

Yes, both openSUSE boxes ping just fine. They can also ping my laptop which is connected via wireless to the master router. Where the problem is is when I try pinging one openSUSE box from my other openSUSE box:

PING ( 56(84) bytes of data.
From icmp_seq=1 Destination Host Unreachable
From icmp_seq=2 Destination Host Unreachable
From icmp_seq=3 Destination Host Unreachable
From icmp_seq=4 Destination Host Unreachable

On 05/09/2016 08:11 AM, Greg Freemyer wrote:
My understanding of the client bridge function is:

* openSUSE Box1 => IGMP (ping) packet to local router via Ethernet

* local router forwards IGMP packet via wireless to main router

* main router forwards IGMP packet back to local router (via wireless)

* local router forwards IGMP packet to openSUSE Box2 via Ethernet

My guess is either:

- the main router doesn't allow peer-to-peer packets at all between
it's WLAN connected devices. That should be fixable via a config
change in the main router.

I have intentionally setup WLANs to not allow peer-to-peer
connections. The clients are only allowed to access the Internet.
Mostly done with guest SSIDs.

- the main router has a bug that doesn't properly handle peer-to-peer
connections on the bridged client router.

I say it is a bug because I have setup up bridged clients where a
printer was hardwired to the slave router. I was able to use the
printer from WLAN connected clients regardless of which WLAN router
they were connected to.

I also checked AP isolation on the master router and client bridge router and both are on off. So yes, it very well could be a bug, or something with the config that I haven't yet figured out.

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