Hi,

I'm new to VLAN setup. Can anyone expert help me ?

I have 2 x 2950-24 switch setup in my office, they're all under single
'VLAN 1'. We're using a cisco 1720 access router. I got a request from
my boss, I need to setup a new vlan for a new dept. whcih needs to be
isolated from existing vlan, but they need to share the internet
access. Below is our LAN setting :
 
Internet -- Cisco 1720 - 2 x Cisco 2950-24


Company A LAN ip - 10.1.1.0./24
 New dept. LAN ip - 10.2.1.0/24

For my understanding, 'Trunking' should able to do that. Could anyone
teach me how to configure my switch for that ?

Many thanks

daemon wrote:
> Hi,
> 
> I'm new to VLAN setup. Can anyone expert help me ?
> 
> I have 2 x 2950-24 switch setup in my office, they're all under single
> 'VLAN 1'. We're using a cisco 1720 access router. I got a request from
> my boss, I need to setup a new vlan for a new dept. whcih needs to be
> isolated from existing vlan, but they need to share the internet
> access. Below is our LAN setting :
>  
> Internet -- Cisco 1720 - 2 x Cisco 2950-24
> 
> 
> Company A LAN ip - 10.1.1.0./24
>  New dept. LAN ip - 10.2.1.0/24
> 
> For my understanding, 'Trunking' should able to do that. Could anyone
> teach me how to configure my switch for that ?
> 
> Many thanks

There will be plenty of examples on the Cisco site for the specifics but 
here's a basic rundown.

You need to daisy-chain the switch trunk ports since you don't have 2 
FE's on the 1700.

So, configure "switch1" with 2 dot1q trunk ports since this will 
interconnect the other switch and router.

Configure "switch2" with 1 trunking port

On the router you need to configure 2 sub-interfaces:

int fastethernet 0.1
  encapsulation dot1q 1
  ip address whatever

int fastethernet 0.2
  encapsulation dot1q 2
  ip address whatever

Hey presto there's your trunking. If you don't want the 2 vlan's to talk 
to each other, that's easy. Just don't configure any routing between the 
two subnets.

"Ben" <l33t@hax0r.com> wrote in message news:41A70279.8030403@hax0r.com...
> daemon wrote:
> > Hi,
> >
> > I'm new to VLAN setup. Can anyone expert help me ?
> >
> > I have 2 x 2950-24 switch setup in my office, they're all under single
> > 'VLAN 1'. We're using a cisco 1720 access router. I got a request from
> > my boss, I need to setup a new vlan for a new dept. whcih needs to be
> > isolated from existing vlan, but they need to share the internet
> > access. Below is our LAN setting :
<snip>

it scares me that your boss is asking you to do this - dont you have a
"network guy" in your office?

SysAdm

this sounds like a small office scenario so i doubt they do...even if they 
had a 'computer guy' around, he/she probably wouldn't be a full-fledged 
cisco engineer.
he/she would probably be more of a desktop support type role.
this is the norm, btw, not the acception for a small office.


"SysAdm" <widge_it@_remove_btinternet.com> wrote in message 
news:co8omb$bfd$1@titan.btinternet.com...
>
> "Ben" <l33t@hax0r.com> wrote in message news:41A70279.8030403@hax0r.com...
>> daemon wrote:
>> > Hi,
>> >
>> > I'm new to VLAN setup. Can anyone expert help me ?
>> >
>> > I have 2 x 2950-24 switch setup in my office, they're all under single
>> > 'VLAN 1'. We're using a cisco 1720 access router. I got a request from
>> > my boss, I need to setup a new vlan for a new dept. whcih needs to be
>> > isolated from existing vlan, but they need to share the internet
>> > access. Below is our LAN setting :
> <snip>
>
> it scares me that your boss is asking you to do this - dont you have a
> "network guy" in your office?
>
> SysAdm
>
>