Re: [Nolug] Any VLAN experts out there?

Do you have another laptop that you can attach to the second port on
switch 1 in VLAN 10 and perform a packet capture? Have you tried
attaching the Sonicwall device to the secondary port in VLAN 10 to see
if it works there?

Also, are the speeds across the wireless link fine? No excessive
packet loss?

J

On 5/4/2011 5:32 PM, Chris Jones wrote:
>
> Yes, vlan10 even works. I can ping the cable modem with a laptop on
> the other switch. The one weird thing I'm seeing is dhcp takes a few
> minutes to give out an ip.
>
> On May 4, 2011 5:24 PM, "Dennis Bourn" <dbourn@tomba.com
> <mailto:dbourn@tomba.com>> wrote:
> > Are any other VLANs part of that trunk (and working?)? That will
> answer the question as to if you should look closer at the wireless link.
> >
> >
> >
> > -----Original Message-----
> > From: owner-nolug@stoney.kellynet.org
> <mailto:owner-nolug@stoney.kellynet.org> on behalf of Chris Jones
> > Sent: Wed 5/4/2011 5:12 PM
> > To: nolug@nolug.org <mailto:nolug@nolug.org>
> > Subject: Re: [Nolug] Any VLAN experts out there?
> >
> > I did notice that one of the switches you can actually set a port as
> being a
> > "trunk" and on the other one you don't. It has access ports and a
> few other
> > types, but for a trunk you apparently just tag whatever vlan's go on it.
> > Come to think of it, I have the modem going into one VLAN10 port,
> but there
> > is a 2nd VLAN10 port next to that one to give us a spare. I plugged into
> > that with my laptop and I was able to get out. Well, if you two are
> > thinking that it's something to do with the trunk, I might add that the
> > trunk link between the two switches is going over a Ubiquiti
> Nanobridge M5.
> >
> > On Wed, May 4, 2011 at 4:48 PM, Jeremy <listbox@unix-boy.com
> <mailto:listbox@unix-boy.com>> wrote:
> >
> >> I will attest to the fact that trunk configuration on the Dell
> Powerconnect
> >> switches is a bit stupid and easy to goof up. I'll echo what Dennis
> said
> >> - that would be where I would check first.
> >>
> >> Another troubleshooting option is to eliminate the trunk. First,
> >> disconnect the router from the second switch and reboot the cable
> modem.
> >> On the first switch, where the modem is attached, setup an untagged
> port on
> >> VLAN 10, connect a laptop and verify that you can access the internet
> >> through just one switch. If that works, then the trunk ports are
> probably
> >> your problem.
> >>
> >> J
> >>
> >>
> >> On 5/4/2011 3:25 PM, Dennis Bourn wrote:
> >>
> >>> The modem will be trying to communicate directly with the router.
> The VLAN
> >>> stuff is "hidden" from both of those devices if they are
> configured as you
> >>> described, with their respective ports being untagged.
> >>>
> >>> The problem will likely be the trunk port between the switches.
> Are both
> >>> using .1Q trunking? If you assign an IP address to vlan10 on the
> switches
> >>> can you ping them from the sonicwall or vice versa. If no ping
> command is
> >>> present, plug a laptop into the Untagged VLAN10 port and ping from
> there.
> >>>
> >>> Dennis Bourn
> >>>
> >>>
> >>> -----Original Message-----
> >>> From: owner-nolug@stoney.kellynet.org
> <mailto:owner-nolug@stoney.kellynet.org> on behalf of Chris Jones
> >>> Sent: Wed 5/4/2011 3:08 PM
> >>> To: nolug@nolug.org <mailto:nolug@nolug.org>
> >>> Subject: Re: [Nolug] Any VLAN experts out there?
> >>>
> >>> 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
> <mailto: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
> >>>> ___________________
> >>>> Nolug mailing list
> >>>> nolug@nolug.org <mailto:nolug@nolug.org>
> >>>>
> >>>
> >> ___________________
> >> Nolug mailing list
> >> nolug@nolug.org <mailto:nolug@nolug.org>
> >>
> >

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Received on 05/04/11