Switches...one is a dell 2848 and the other is a "cisco small business"
switch, router is sonicwall. Only the router and modem are on that vlan.
As far as I can tell I've done everything by the book, all I can think of is
the modem is trying to communicate directly with the router and it doesn't
support "hops".
On May 4, 2011 2:37 PM, "Jeremy" <listbox@unix-boy.com> wrote:
> 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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