On 5/4/2011 2:13 PM, Chris Jones wrote:
> I'm running into an odd issue at one of my sites. We're trying to set
> them up with cable modem internet through charter, but we have some
> serious physical limitations to their network, which basically result
> in us having to set this up in a fairly complicated manner.
>
> We have 2 managed VLAN switches. One goes in each of 2 locations, and
> they will be linked together via uplink/stacking ports. Here's how
> the signal flow works:
>
> - Charter goes into a port untagged for VLAN10 on Switch A
> - Charter goes out thru the trunk port of Switch A that is tagged for
> all relevant VLAN's
> - Charter goes into the trunk port of Switch B
> - Charter goes out of an untagged port on Switch B and into the router
>
> Problem is, this is not working. It seems like the managed switches
> are doing something to the packets that the Charter modem does not
> like, screwing with MAC addresses or something. Does anyone know
> anything that may help me out here? Is there something I need to turn
> on in the switches to keep them from interfering with this traffic?
Are the cable modem and router the only devices in VLAN 10? Do you
have ANY other devices - PCs, servers, printers - in that VLAN?
What type of switches and router are in the setup?
J
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Received on 05/04/11
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