sanako 1200 flooding switch with traffic

[ricki]

Hi

We have sanako 1200 installing in our Library with 32 machines and it appears to be flooding the switch with traffic so much so that computers will not apply group policy. If the member of staff starts using the program and then a machine is turned on machines they have problems and dont apply settings.

The pc's are new Lenovo a70z all in ones and the switch is a new hp procurve 10/100 switch with 1 gig feed and all the wiring is new as the library was upgraded in September 2011. The controlling pc is plugged into the second gig feed.

If you stop sanako running the problem disappears. We dont have the problem of setting not applying in the rest of the school and dont appear to have it in the Library till Sanako is used. We have turned on spanning tree on the switches as a just in case.

We have replaced the switch with another of the same make/model and still have the same problem.

I have called sanako and am waiting for an answer as the call is being escalated.

Has anyone got any ideas?

Richard

[Achandler]

Where is your license server running in comaprison to your clients?

[andyrite]

Have you enabled IGMP filtering on your switch?

[m25man]

I think @andyrite is on the right track, that looks like its a Multicasting issue.
Does the Broadcasting PC really need to be on a Gigabit port???

The same packet is being sent to all Multicast recipients the mismatch in port speeds may only aggravate the problem with lots of oversized and runt packets.
Move it to a 10/100 slot and see if that helps.

[ricki]

HI

They have come back to me and we have enabled igmp on the switch
We have updated the driver on the switch
The teachers pc is plugged into a gig port and has a gig network card.
The teachers pc is the liciencing server.
We have changed the client bit of this document:- http://download.sanako.com/files/stu...y_v._5._40.pdf
When we did the teacher pc bit broken Sanako and we had to put the old register settings back.

If it does not fix it I will plug the teachers pc into a 10/100 port.

MFL are going to test the machines over the next couple of days.

Richard

[ricki]

HI

They have come back to me and we have enabled igmp on the switch
We have updated the driver on the switch
The teachers pc is plugged into a gig port and has a gig network card.
The teachers pc is the liciencing server.
We have changed the client bit of this document:- http://download.sanako.com/files/stu...y_v._5._40.pdf
When we did the teacher pc bit broken Sanako and we had to put the old register settings back.

If it does not fix it I will plug the teachers pc into a 10/100 port.

MFL are going to test the machines over the next couple of days.

Richard

[ricki]

Am trying moving the teachers machine to 10/100 its reduced but not stopped.

Richard