DrayTek UK Users' Community Forum

Help, Advice and Solutions from DrayTek Users

Strange ping behaviour

  • philguk
  • Topic Author
  • Offline
  • Junior Member
  • Junior Member
More
26 Jul 2021 21:02 #99634 by philguk
Strange ping behaviour was created by philguk
I have an AP800 that has two SSIDs defined. Let’s call them FRED & BERT. They are both associated with the SAME LAN (the only one I have) and are supported by the same DHCP server so get IP addresses from the same pool

When I connect to BERT I can ping all WIRED devices, but I cannot ping devices connected to FRED. If I switch to FRED, I can now ping other Fred devices (and wired ones) but now I can’t ping BERT devices

Is this expected behaviour? I certainly wasn’t expecting it to work this way

Is there something I can do to make wirelessly attached devices visible to each other REGARDLESS of which SSID I connect to??

Thanks

Phil G

Please Log in or Create an account to join the conversation.

More
26 Jul 2021 21:41 #99635 by hornbyp
Replied by hornbyp on topic Re: Strange ping behaviour
Is "Isolate members with IP" enabled ? (Wireless LAN>>Advanced settings - assuming it is available on the AP800)

See: https://www.draytek.com/support/knowledge-base/5457

Draytek wrote: Members Isolation with IP is a new feature introduced in firmware version 1.2.3. When this setting is enabled, the AP inspects the source and destination IP addresses of each packet and blocks the wireless clients attempt to discover network clients by sending ICMP requests to the gateway to discover the network clients.

Please Log in or Create an account to join the conversation.

  • philguk
  • Topic Author
  • Offline
  • Junior Member
  • Junior Member
More
27 Jul 2021 09:15 #99636 by philguk
Replied by philguk on topic Re: Strange ping behaviour

hornbyp wrote:
Is "Isolate members with IP" enabled ? (Wireless LAN>>Advanced settings - assuming it is available on the AP800)

See: https://www.draytek.com/support/knowledge-base/5457

Draytek wrote: Members Isolation with IP is a new feature introduced in firmware version 1.2.3. When this setting is enabled, the AP inspects the source and destination IP addresses of each packet and blocks the wireless clients attempt to discover network clients by sending ICMP requests to the gateway to discover the network clients.




I’ll double check, but pretty sure this is DISABLED by default?

Please Log in or Create an account to join the conversation.

  • philguk
  • Topic Author
  • Offline
  • Junior Member
  • Junior Member
More
27 Jul 2021 12:34 #99638 by philguk
Replied by philguk on topic Re: Strange ping behaviour
Ok, I see ONE option

Code:
Isolate Member: Wireless clients (stations) with the same SSID cannot access for each other.


This is NOT enabled, but it talks about isolating stations on the SAME SSID

Does this imply stations on DIFFERENT SSIDs are always isolated??

Please Log in or Create an account to join the conversation.

More
27 Jul 2021 13:32 #99639 by hornbyp
Replied by hornbyp on topic Re: Strange ping behaviour

philguk wrote:
Does this imply stations on DIFFERENT SSIDs are always isolated??


I don't have an AP800, but I just tried on an AP903. Two mobile phones on different or same SSID - but same IP network in each case, can always Ping one another. (However, the SSID s were configured to use VLAN tags, so that's another variation).

Please Log in or Create an account to join the conversation.

  • philguk
  • Topic Author
  • Offline
  • Junior Member
  • Junior Member
More
27 Jul 2021 15:13 #99640 by philguk
Replied by philguk on topic Re: Strange ping behaviour

hornbyp wrote:

philguk wrote:
Does this imply stations on DIFFERENT SSIDs are always isolated??


I don't have an AP800, but I just tried on an AP903. Two mobile phones on different or same SSID - but same IP network in each case, can always Ping one another. (However, the SSID s were configured to use VLAN tags, so that's another variation).


Thanks for that.

Please Log in or Create an account to join the conversation.

Moderators: Chris, Sami