That's absolutely truth !! Idealy one wants to have a whole grou/department
located on the same area be members of one VLAN, Subnet. Not just mixed
within the same group. Aldough, you can create VLANS/departments for
specific stations for department managements, but it is not common or seldom
done.
I completely agree, someone didn't know what they were doing !
------Original Message------
From: "joel.studtmann" <[EMAIL PROTECTED]>
To: Jorge Rodriguez <[EMAIL PROTECTED]>, jeongwoo park <[EMAIL PROTECTED]>,
[EMAIL PROTECTED]
Sent: July 13, 2000 12:03:04 PM GMT
Subject: Re: Someone clarify this?
Or, in common cases, someone didn't know what they were doing, and have two
logical networks sitting on one physical one. Common cause is an expansion
in the number of computers on a segment, and rather than adjusting the DHCP
scope, they create a second dhcp scope.
Very inefficient when the two computers need to talk to each other, as the
packet has to be sent to the router first)
::sigh::
I've seen THAT one done before.
Granted, it could have been planned that way, if they are using VLANs and
the computers are on different switch ports.
..Joel Studtmann
----- Original Message -----
From: Jorge Rodriguez <[EMAIL PROTECTED]>
To: jeongwoo park <[EMAIL PROTECTED]>; <[EMAIL PROTECTED]>
Sent: Thursday, July 13, 2000 06:58
Subject: RE: Someone clarify this?
yes, Vlans makes that posible.
VLAN configurations happens at the switch when VLAN IP interfaces
are created to defined a VLAN colition domain on that switch.
So, the switch may have 24port 10/100BaseT modules which you can
asign at each port or the whole module to be a member of a specific VLAN
group thus alowing colition control and at the same time the braking down of
your IP address schem. Communication between VLANS happens at the RSM Route
Switch Module in the switch where your subnets routing will occur.
Each VLAN# must have an IP interface at the core otherwise routing will not
occur.
When the station boots up it will send a request for an IP in the case of
DHCP. If DHCP if properly configured with default routes for the specific
subnets, that is, " Interfaces on the Switch", it will only asign IP
addresses to the stations connected to that switch module.
------Original Message------
From: jeongwoo park <[EMAIL PROTECTED]>
To: "[EMAIL PROTECTED]" <[EMAIL PROTECTED]>
Sent: July 13, 2000 3:46:37 AM GMT
Subject: Someone clarify this?
Hi all!!
I am a fresh college graduate.
While I was reading Cisco book at the school computer lab today, I was
curious about some network concept.
Could somebody clarify this?
Here it is.
This computer lab is set up with window NT workstations.
I was wondering what the ip address of each workstations will be. So, I
checked ip addresses of each stations by going around each stations by
typing -ipconfig-- at command prompt.
So, I was able to figure out those machines' ip addresses.
When I was doing this, I also found that the ip address of the computer
sitting right behind my original station had different subnet ip address
from my original station' s subnet ip address.
The station behind my station: 130.222.235.90/24
My station: 130.222.224.40/24
I know that it is DHCP server that assigns the different ip addresses to
clients. However,
these two machines are sitting on same computer lab, but each one belongs to
different subnet. And all these computers are connected to a switch.
Is it VLAN concept that makes it possible?
Would this be also possible without the VLAN configuration on the switch?
I was wondering if two machines could sit next to each other having
different subnet ip addresses.
The guy in charge of the computer lab didn't seem to be familiar with
configuring VLAN on his switch.
As far as I know, the station behind me can't send any data to my station or
the other way around without the external router intervention if they belong
to different VLANs. I hadn't checked if my station could talk to the station
behind me because I didn't know how to do it.
Could someone clarify this?
I will appreciate your help
Thanks in advance.
jeongwoo
..........................................................
iWon.com http://www.iwon.com why wouldn't you?
..........................................................
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Jorge Rodriguez /CCNA
Network Analyst
R&S Networks Inc
1112 Boylston Street
Suite 222
Boston, MA 02115
1-781-614-1294
1-617-989-8634 Evenings
http://www.netwire.n3.net/
http://www.learncisco.n3.net/
.........................................................
iWon.com http://www.iwon.com why wouldn't you?
.........................................................
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
Jorge Rodriguez /CCNA
Network Analyst
R&S Networks Inc
1112 Boylston Street
Suite 222
Boston, MA 02115
1-781-614-1294
1-617-989-8634 Evenings
http://www.netwire.n3.net/
http://www.learncisco.n3.net/
........................................................
iWon.com http://www.iwon.com why wouldn't you?
........................................................
___________________________________
UPDATED Posting Guidelines: http://www.groupstudy.com/list/guide.html
FAQ, list archives, and subscription info: http://www.groupstudy.com
Report misconduct and Nondisclosure violations to [EMAIL PROTECTED]
