Re: Vlan Questions

2000-07-05 Thread Paul Schultz



You can have the server be a part of both VLANs without having to do any
routing..  Here's a config snip with an example.

Everything defaults to VLAN 1, so no extra configuration on any of the
ports that will be only on vlan 1.

For clients on the second vlan, do this for every port that you want on
VLAN 2:

interface FastEthernet0/13 (or whatever port it is)
 switchport access vlan2


now.. for the server, who you want to be part of both VLANs do this


interface FastEthernet0/1
 switchport mode multi
 swithport multi vlan 1,2



That will give you 2 seperate VLANs both being able to connect to the
server on port 1 (in this scenerio.)

Be careful, in this case machines on both VLANs can connect to to the
server, the server can connect to any machine on either VLAN, but clients
on VLAN 1 can not connect to clients on VLAN 2 and vice versa.  For this
it would be beneficial to put a router in place to route between to two
networks.

Hope this helps!


Paul Schultz








On Wed, 5 Jul 2000, Darren Blake wrote:

 Hi All,
 
 I am new to this list so sorry if this has been asked before.
 I am really confused about the benefits/setup of Vlans. The more reading I
 do on the subject, the more confused I get. 
 Say, I have a network of 100 users who all access a file server and Internet
 router. How can I split them up into 2 vlans when they all need to access
 the file server and Internet router. I know it is possible to use a 'router
 on a stick' to enable communication between the vlans  but  can you make the
 file server/router members of both vlans without a separate router?  Are
 there any performance/config issues by making them members of both vlans.?
 Also is there any way to assign ports to vlans other than manually
 configuring them. For example say I had two subnets 192.168.14.0 and
 192.168.15.0 on my network. Is it possible to automatically setup two vlans
 so the machines on the 14 subnet are assigned to 1 vlan and the machines on
 the 15 subnet to the other ( I know its possible to automatically assign
 based on Mac address - but that still means you have to find out all the MAC
 addresses on your network ). 
 Any info or pointers to further reading would be grateful.
 
 Regards,
 
 Darren 
 
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Re: Vlan Questions

2000-07-05 Thread John Neiberger

That config would only be valid for a 2900XL or 3500XL, right?  I'm not sure
how this would be configured on a Set-command switch like a 5000.

And IIRC, multi-vlan ports are not allowed if there are any trunk ports
configured on that switch, so that's something to watch for.  I might be
wrong on both counts, so take this with a grain of salt!  :-)

John Neiberger

  
  
  You can have the server be a part of both VLANs without having to do any
  routing..  Here's a config snip with an example.
  
  Everything defaults to VLAN 1, so no extra configuration on any of the
  ports that will be only on vlan 1.
  
  For clients on the second vlan, do this for every port that you want on
  VLAN 2:
  
  interface FastEthernet0/13 (or whatever port it is)
   switchport access vlan2
  
  
  now.. for the server, who you want to be part of both VLANs do this
  
  
  interface FastEthernet0/1
   switchport mode multi
   swithport multi vlan 1,2
  
  
  
  That will give you 2 seperate VLANs both being able to connect to the
  server on port 1 (in this scenerio.)
  
  Be careful, in this case machines on both VLANs can connect to to the
  server, the server can connect to any machine on either VLAN, but clients
  on VLAN 1 can not connect to clients on VLAN 2 and vice versa.  For this
  it would be beneficial to put a router in place to route between to two
  networks.
  
  Hope this helps!
  
  
  Paul Schultz
  
  
  
  
  
  
  
  
  On Wed, 5 Jul 2000, Darren Blake wrote:
  
   Hi All,
   
   I am new to this list so sorry if this has been asked before.
   I am really confused about the benefits/setup of Vlans. The more
reading I
   do on the subject, the more confused I get. 
   Say, I have a network of 100 users who all access a file server and
Internet
   router. How can I split them up into 2 vlans when they all need to
access
   the file server and Internet router. I know it is possible to use a
'router
   on a stick' to enable communication between the vlans  but  can you
make the
   file server/router members of both vlans without a separate router? 
Are
   there any performance/config issues by making them members of both
vlans.?
   Also is there any way to assign ports to vlans other than manually
   configuring them. For example say I had two subnets 192.168.14.0 and
   192.168.15.0 on my network. Is it possible to automatically setup two
vlans
   so the machines on the 14 subnet are assigned to 1 vlan and the
machines on
   the 15 subnet to the other ( I know its possible to automatically
assign
   based on Mac address - but that still means you have to find out all
the MAC
   addresses on your network ). 
   Any info or pointers to further reading would be grateful.
   
   Regards,
   
   Darren 
   
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