Depuis un ordinateur du PSE B j'envoie un ping sur google, avec comme gateway le PC-Routeur PSE-B, sur Wireshark(du PC-Routeur) je voyais les requêtes ICMP. Les requêtes ping aboutissait.
Depuis un ordinateur du PSE A j'envoi un ping sur google, avec comme gateway le PC-Routeur PSE-B, sur Wirershark(du PC-Routeur) je ne voyais pas les requêtes ICMP. Aucune réponse au ping.
Depuis un ordinateur du PSE A j'envoi un ping sur google, avec comme gateway le PC-Routeur PSE-A, sur Wirershark(du PC-Routeur) je voyais les requêtes ICMP. Les requêtes ping aboutissait.
Depuis un ordinateur du PSE B j'envoi un ping sur google, avec comme gateway le PC-Routeur PSE-A, sur Wirershark(du PC-Routeur) je voyais les requêtes ICMP. Les requêtes ping aboutissait (97% de retour sur 1370 paquets envoyés, c'est surement du au wireless ).
On 2009-03-05 15:13, Emin Gabrielyan wrote:
Kerim can make IP forward on his machine
http://support.microsoft.com/kb/315236
then we use his IP address (in PSE-B) as our default gateway (from PSE-A)
he can launch wireshark and see what is going on
Emin
On 2009-03-05 15:10, Emin Gabrielyan wrote:I also changed the default gateway of both radio bridges (192.168.1.10 and 192.168.1.11) linking PSE-A with PSE-B to point on 192.168.1.14
But still without a result
Emin
On 2009-03-05 14:47, Emin Gabrielyan wrote:I suggest to stop all routers of our office (Swisscom PSE-A, VTX PSE-A, and EPFL PSE-A)
Then it must work
I do not see why it will not work afterwards
Emin
On 2009-03-05 13:49, Christian Lathion wrote:
We changed the cabling to a central switch, it did not solve the problem.
Setting the vtx device into bridge mode with a linksys spa3102 as router did not solve the problem, neither shutting down the swisscom router.
Kerim proposes to try by inverting the direction of the wifi link.
Christian thinks of some strange network problem (MTU mismatch or packet fragmentation on the wifi link), but it should not cause problems with ping.
On 2009-03-04 18:08, Emin Gabrielyan wrote:
Christian, Kerim,
I suspect that the strange problem comes from the fact that in PSE-A the Swisscom router is a kind of a central switch. Offices and other switches are interconnected via the switch integrated in this router. All cables of different parts of LAN shall be connected to a neutral switch. The Swisscom router must be also connected to that neutral switch as an appendix (no other LAN part must transit via Swisscom router). I hope that after this, the problem will be solved.
Please do it, maybe today, because anyway the day is lost due to STEG
Emin
Reference:
http://www.unappel.ch/public/090227-switzernet-pse-lan/
http://switzernet.com/public/090227-switzernet-pse-lan/
This doc must be updated once the LAN works properly
- add the missing screen shot with the VTX in PSE-B
- add the diagram of our network [gw EPFL] -- [gw VTX] -- [gw Swisscom] --- LAN PSE-A [bridge] ---- [bridge] LAN PSE-B --- [gw VTX]
- specify the connection parameters (upstream/downstream/monthly fees)
No virus found in this incoming message. Checked by AVG. Version: 7.5.557 / Virus Database: 270.11.8/1984 - Release Date: 3/4/2009 7:17 PM
-- Switzernet Sàrl PSE, Bâtiment A, EPFL 1015 Lausanne Switzerland Tel: +4121 5500302 Fax: +4144 3553061 Web: http://switzernet.com [CONFIDENTIALITY AND PRIVACY NOTICE] Information transmitted by this email is proprietary to the email sender and is intended for use only by the individual or entity to which it is addressed, and may contain information that is private, privileged, confidential or exempt from disclosure under applicable law. If you are not the intended recipient or it appears that this mail has been forwarded to you without proper authority, you are notified that any use or dissemination of this information in any manner is strictly prohibited. In such cases, please delete this mail from your records.