Mailing List Archived Message #21

From: "Lewis G Rosenthal" <> Full Headers
Undecoded message
Subject: Re: [Virtualized eCS]Accessing network shares from guest
Date: Mon, 14 Sep 2009 08:30:01 -0400
To: Virtualized eCS Users Mailing List <>

Hi, Ed...

On 09/14/09 01:07 am, Ed Durrant thus wrote :
Lewis G Rosenthal wrote:

A bridge is a bit different. A bridge connects two physically disparate networks (wireless and wired, or coaxial and twisted pair or even fiber and twisted pair) to the same *logical* network.
Unless the definition has been "adapted" lately, I learned that a bridge is a transparent connection between two networks. A bridge allows NETBIOS to traverse between toe physical networks where a router does not (as it only allows IP traffic through)

A bridge connects two different topologies to the same logical network. It does not route. Thus, when configuring a DSL "box" for "dumb" mode (where the authentication and routing is handled in a router somewhere behind it), it is considered to be in "bridge" mode (as it is simply bridging the ethernet to the copper phone wire). As a result, protocols which do not route will travel happily across a bridge, as it's all the same logical network. So, in that sense, bridges are transparent.

Bridges work at layer 2 of the OSI model, the data-link layer, and know only about MAC addresses; in contrast, routers work at layer 3, the network layer, and understand IP addresses. Thus, routers can traverse entire networks but bridges only connect multiple physical segments to the *same* network.
In any case, coming back to IP - if the systems are configured on different IP Subnets, as Lewis says, the only way to allow traffic to cross the networks is to use a router. In the early days of SVista/2 one had to configure a route statement in a physical external router (such as ADSL or Wifi router) before it could communicate with the local machine - it sounds like something similar here.

Andy figured out the same thing to get VirtualPC to work with a wireless network card.
In fact with that route in place and TCPBEUI (NETBIOS over IP) configured, you may well be able to reach your wife's Windoze box from the W2K running i VBOX - which I think was the original intention.

Yes, as long as the Windows box is configured for TCPBEUI, as well.
Of course if you could simply share the local subnet in the first place all of this would be unnecessary so perhaps it's worth tracking down why that fails - it works for me when I run WinXP in VBox/2.

Personally, I think that's a more productive use of Cliff's time and effort. ;-)

Lewis G Rosenthal, CNA, CLP, CLE
Rosenthal & Rosenthal, LLC      
Need a managed Wi-Fi hotspot?      
Secure, stable, operating system

Subscribe: Feed, Digest, Index.
Mail to ListMaster