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Virtual LAN Problem

 
 
kysiow
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      01-16-2006, 11:20 AM
Hi!;

My company have setup 2 Virtual LAN. The purpose to setup 2 virtual LAN due
to PC amount of my company too many (more than 254 units). So we need to
separate the network to 2 virtual LAN. However we still want let 2 different
virtual LAN PC can direct communicate each and other. We bought the 3Com
SuperStack 3226 layer 3 management switch to do the job. The switch can
create virtual LAN and does the ip routing among different Virtual LAN.
However one problem I faced out is I can not browse one of the V-LAN groups
PC from network neighborhood or my network places. For instance I have 2
group of V-LAN. One group using 192.168.7.xxx and another group using
192.168.8.xxx. However what I wondering is the users of 192.168.8.xxx can
browse all the diffrent V-LAN PC in the network using network neighborhood or
my network places. However for users of 192.168.7.xxx only can view the PC
that belongs to same V-LAN group. However the 192.168.7.xxx users can ping
and search the user that belongs to 192.168.8.xxx with using dns name or ip.
But they can't browse the PC for that belongs to 192.168.8.xxx. I have
checked the 3 Com management system configurations setting. I didn't find any
mistake. I have setup DNS and Wings properly on my server, so it should be no
problem. However I still faced out this wondering problem. So any one got the
idea to solve this kind of problem.

Thanks & Regards

 
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Phillip Windell
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Posts: n/a

 
      01-16-2006, 06:46 PM
Network Neighborhood does not work across subnets with a WINS Server. That
is the purpose of a WINS Server.

--
Phillip Windell [MCP, MVP, CCNA]
www.wandtv.com


"kysiow" <(E-Mail Removed)> wrote in message
news:47990F69-D995-477D-A71F-(E-Mail Removed)...
> Hi!;
>
> My company have setup 2 Virtual LAN. The purpose to setup 2 virtual LAN

due
> to PC amount of my company too many (more than 254 units). So we need to
> separate the network to 2 virtual LAN. However we still want let 2

different
> virtual LAN PC can direct communicate each and other. We bought the 3Com
> SuperStack 3226 layer 3 management switch to do the job. The switch can
> create virtual LAN and does the ip routing among different Virtual LAN.
> However one problem I faced out is I can not browse one of the V-LAN

groups
> PC from network neighborhood or my network places. For instance I have 2
> group of V-LAN. One group using 192.168.7.xxx and another group using
> 192.168.8.xxx. However what I wondering is the users of 192.168.8.xxx can
> browse all the diffrent V-LAN PC in the network using network neighborhood

or
> my network places. However for users of 192.168.7.xxx only can view the PC
> that belongs to same V-LAN group. However the 192.168.7.xxx users can ping
> and search the user that belongs to 192.168.8.xxx with using dns name or

ip.
> But they can't browse the PC for that belongs to 192.168.8.xxx. I have
> checked the 3 Com management system configurations setting. I didn't find

any
> mistake. I have setup DNS and Wings properly on my server, so it should be

no
> problem. However I still faced out this wondering problem. So any one got

the
> idea to solve this kind of problem.
>
> Thanks & Regards
>



 
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kysiow
Guest
Posts: n/a

 
      01-16-2006, 11:48 PM
Hi!;

If I want to browse all the different V-LAN PC from network neighborhood.
What should I do?

Thanks & Regards

"Phillip Windell" wrote:

> Network Neighborhood does not work across subnets with a WINS Server. That
> is the purpose of a WINS Server.
>
> --
> Phillip Windell [MCP, MVP, CCNA]
> www.wandtv.com
>
>
> "kysiow" <(E-Mail Removed)> wrote in message
> news:47990F69-D995-477D-A71F-(E-Mail Removed)...
> > Hi!;
> >
> > My company have setup 2 Virtual LAN. The purpose to setup 2 virtual LAN

> due
> > to PC amount of my company too many (more than 254 units). So we need to
> > separate the network to 2 virtual LAN. However we still want let 2

> different
> > virtual LAN PC can direct communicate each and other. We bought the 3Com
> > SuperStack 3226 layer 3 management switch to do the job. The switch can
> > create virtual LAN and does the ip routing among different Virtual LAN.
> > However one problem I faced out is I can not browse one of the V-LAN

> groups
> > PC from network neighborhood or my network places. For instance I have 2
> > group of V-LAN. One group using 192.168.7.xxx and another group using
> > 192.168.8.xxx. However what I wondering is the users of 192.168.8.xxx can
> > browse all the diffrent V-LAN PC in the network using network neighborhood

> or
> > my network places. However for users of 192.168.7.xxx only can view the PC
> > that belongs to same V-LAN group. However the 192.168.7.xxx users can ping
> > and search the user that belongs to 192.168.8.xxx with using dns name or

> ip.
> > But they can't browse the PC for that belongs to 192.168.8.xxx. I have
> > checked the 3 Com management system configurations setting. I didn't find

> any
> > mistake. I have setup DNS and Wings properly on my server, so it should be

> no
> > problem. However I still faced out this wondering problem. So any one got

> the
> > idea to solve this kind of problem.
> >
> > Thanks & Regards
> >

>
>
>

 
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Bill Grant
Guest
Posts: n/a

 
      01-17-2006, 12:52 AM
Browsing across subnets will not work without WINS, as Phillip has
already pointed out. Network Neighborhood is driven by the computer browser
service. The computer browser service uses Netbios names and broadcasts to
build browse lists. Broadcasts do not normally cross routers on WAN links
(and shouldn't either).

To get browsing working across routers you need WINS. The browser
service needs WINS to allow browse masters to find other browse masters
across routers. They use WINS to convert names to IP addresses so they can
contact them without broadcasting.

You would only need one WINS server on your network and ALL machines
should be set up as WINS clients so that they register with WINS.

If just installing a WINS server and making all machines WINS clients
doesn't get browsing working, you will need to start troubleshooting the
browser service. See KB 188305 . But give it an hour or two before you
panic. It takes a while to get started.

kysiow wrote:
> Hi!;
>
> If I want to browse all the different V-LAN PC from network
> neighborhood. What should I do?
>
> Thanks & Regards
>
> "Phillip Windell" wrote:
>
>> Network Neighborhood does not work across subnets with a WINS
>> Server. That is the purpose of a WINS Server.
>>
>> --
>> Phillip Windell [MCP, MVP, CCNA]
>> www.wandtv.com
>>
>>
>> "kysiow" <(E-Mail Removed)> wrote in message
>> news:47990F69-D995-477D-A71F-(E-Mail Removed)...
>>> Hi!;
>>>
>>> My company have setup 2 Virtual LAN. The purpose to setup 2 virtual
>>> LAN due to PC amount of my company too many (more than 254 units).
>>> So we need to separate the network to 2 virtual LAN. However we
>>> still want let 2 different virtual LAN PC can direct communicate
>>> each and other. We bought the 3Com SuperStack 3226 layer 3
>>> management switch to do the job. The switch can create virtual LAN
>>> and does the ip routing among different Virtual LAN. However one
>>> problem I faced out is I can not browse one of the V-LAN groups PC
>>> from network neighborhood or my network places. For instance I have
>>> 2 group of V-LAN. One group using 192.168.7.xxx and another group
>>> using 192.168.8.xxx. However what I wondering is the users of
>>> 192.168.8.xxx can browse all the diffrent V-LAN PC in the network
>>> using network neighborhood or my network places. However for users
>>> of 192.168.7.xxx only can view the PC that belongs to same V-LAN
>>> group. However the 192.168.7.xxx users can ping and search the user
>>> that belongs to 192.168.8.xxx with using dns name or ip. But they
>>> can't browse the PC for that belongs to 192.168.8.xxx. I have
>>> checked the 3 Com management system configurations setting. I
>>> didn't find any mistake. I have setup DNS and Wings properly on my
>>> server, so it should be no problem. However I still faced out this
>>> wondering problem. So any one got the idea to solve this kind of
>>> problem.
>>>
>>> Thanks & Regards



 
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Bill Grant
Guest
Posts: n/a

 
      01-17-2006, 01:14 AM
The last line in the first paragraph should have said "Broadcasts do not
cross routers OR WAN links ... " One letter makes quite a difference
sometimes.

Bill Grant wrote:
> Browsing across subnets will not work without WINS, as Phillip has
> already pointed out. Network Neighborhood is driven by the computer
> browser service. The computer browser service uses Netbios names and
> broadcasts to build browse lists. Broadcasts do not normally cross
> routers on WAN links (and shouldn't either).
>
> To get browsing working across routers you need WINS. The browser
> service needs WINS to allow browse masters to find other browse
> masters across routers. They use WINS to convert names to IP
> addresses so they can contact them without broadcasting.
>
> You would only need one WINS server on your network and ALL
> machines should be set up as WINS clients so that they register with
> WINS.
> If just installing a WINS server and making all machines WINS
> clients doesn't get browsing working, you will need to start
> troubleshooting the browser service. See KB 188305 . But give it an
> hour or two before you panic. It takes a while to get started.
>
> kysiow wrote:
>> Hi!;
>>
>> If I want to browse all the different V-LAN PC from network
>> neighborhood. What should I do?
>>
>> Thanks & Regards
>>
>> "Phillip Windell" wrote:
>>
>>> Network Neighborhood does not work across subnets with a WINS
>>> Server. That is the purpose of a WINS Server.
>>>
>>> --
>>> Phillip Windell [MCP, MVP, CCNA]
>>> www.wandtv.com
>>>
>>>
>>> "kysiow" <(E-Mail Removed)> wrote in message
>>> news:47990F69-D995-477D-A71F-(E-Mail Removed)...
>>>> Hi!;
>>>>
>>>> My company have setup 2 Virtual LAN. The purpose to setup 2 virtual
>>>> LAN due to PC amount of my company too many (more than 254 units).
>>>> So we need to separate the network to 2 virtual LAN. However we
>>>> still want let 2 different virtual LAN PC can direct communicate
>>>> each and other. We bought the 3Com SuperStack 3226 layer 3
>>>> management switch to do the job. The switch can create virtual LAN
>>>> and does the ip routing among different Virtual LAN. However one
>>>> problem I faced out is I can not browse one of the V-LAN groups PC
>>>> from network neighborhood or my network places. For instance I have
>>>> 2 group of V-LAN. One group using 192.168.7.xxx and another group
>>>> using 192.168.8.xxx. However what I wondering is the users of
>>>> 192.168.8.xxx can browse all the diffrent V-LAN PC in the network
>>>> using network neighborhood or my network places. However for users
>>>> of 192.168.7.xxx only can view the PC that belongs to same V-LAN
>>>> group. However the 192.168.7.xxx users can ping and search the user
>>>> that belongs to 192.168.8.xxx with using dns name or ip. But they
>>>> can't browse the PC for that belongs to 192.168.8.xxx. I have
>>>> checked the 3 Com management system configurations setting. I
>>>> didn't find any mistake. I have setup DNS and Wings properly on my
>>>> server, so it should be no problem. However I still faced out this
>>>> wondering problem. So any one got the idea to solve this kind of
>>>> problem.
>>>>
>>>> Thanks & Regards



 
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