[WISPA] multiple networks on one cable...

[Ugo Bellavance]

On 2010-01-15 07:48, Mark McElvy wrote:
> I have Dell managed switches. A 24 and 48 port 10/100 and a 16 port Gb

Then it sould be relatively easy to use vlans.  The basics about vlans 
is that if a port is only in one vlan, you configure this port with an 
untagged vlan number.  Cisco calls this an access port.  When you want a 
port to carry multiple vlans, you must configure this port with tagged 
vlan numbers.  Cisco calls this a trunk.  So in your situation, you must 
decide on a VLAN number for each segment (don't use number one, though, 
if possible).  Let's say you decide to use vlan 10 for 10.25.1.x, 20 for 
172.22.1.x, 30 for 172.22.255.x.

Then you configure all your switches this way:

All ports that are in 10.25.1.x, you configure them with untaggged vlan 
#10, all ports in 172.22.1.x with untagged vlan # 20, and 172.22.255.x 
ports with untagged vlan number 30.

Then I assume you want all switches to be able to carry all vlans, so 
you just set your inter-switch links with tagged vlan numbers 10, 20, 
and 30.

This is the basics, but it can be a very disturbing operation and almost 
guarrantees downtime, so it is better to experiment in a lab, or ask a 
specialist to do the job.

hth

>
> -----Original Message-----
> From: wireless-bounces at wispa.org [mailto:wireless-bounces at wispa.org] On
> Behalf Of Ugo Bellavance
> Sent: Friday, January 15, 2010 5:32 AM
> To: wireless at wispa.org
> Subject: Re: [WISPA] multiple networks on one cable...
>
> On 2010-01-14 15:47, Mark McElvy wrote:
>> I would if I had my brain wrapped around VLan's
>
> What equipment are you using? We could provide some guidance...
>
>>
>> Mark McElvy
>> AccuBak Data Systems, Inc.
>>
>>
>> -----Original Message-----
>> From: wireless-bounces at wispa.org [mailto:wireless-bounces at wispa.org]
> On
>> Behalf Of Jeremy Parr
>> Sent: Thursday, January 14, 2010 2:15 PM
>> To: WISPA General List
>> Subject: Re: [WISPA] multiple networks on one cable...
>>
>> 2010/1/14 Mark McElvy<MMcElvy at accubak.com>:
>>> I am moving my servers to a new location in the same building. I only
>>> have 2 Ethernet runs from the current room to the new. I also have
>>> several networks to move. What would it hurt to have several
> different
>>> IP networks traveling across a single cable for say a week as I moved
>>> the servers, ie, 10.25.1.x and 172.22.1.x and 172.22.255.x all
> plugged
>>> into the same switch?
>>
>> Why not trunk them as tagged vlans?
>>
>>
>>
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