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Topic: Ethernet bridge


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In the News (Sun 3 Jun 12)

  
  Am Ethernet Bridge
A bridge is a LAN interconnection device which operates at the data link layer (layer 2) of the OSI reference model.
Bridges were first specified in IEEE 802.1D (1990) and later by ISO (in 1993).
Bridges forward a broadcast frame out of all connected ports except that on which the frame was received.
www.erg.abdn.ac.uk /users/gorry/course/lan-pages/bridge.html   (1496 words)

  
 Ethernet Bridging
The ethernet bridge can be thought of as a kind of software switch which can be used to connect multiple ethernet interfaces (either physical or virtual) on a single machine while sharing a single IP subnet.
A bridge interface is a kind of virtual network interface which is formed by combining one or more ethernet interfaces, each of which may be a physical NIC or a virtual TAP interface used for VPN tunneling.
A common mistake that people make when manually configuring an Ethernet bridge is that they add their primary ethernet adapter to the bridge before they have set the IP and netmask of the bridge interface.
openvpn.net /bridge.html   (1641 words)

  
 Ethernet Distance
Ethernet bridges were used to connect homogeneous networks and forward packets between them.
One of the most common uses of the Ethernet bridge is to connect an Ethernet to a network of a different type--for instance, a wireless network.
The Ethernet bridge allows this connection between differing media or protocols to be seamless, by forwarding information based on the layer-two Ethernet address, rather than the layer-three IP address (as done with a router).
www.patton.com /resources/ethernet_bridge.asp   (338 words)

  
 Bridge - LinuxNet
A bridge is a way to connect two Ethernet segments together in a protocol independent way.
The root bridge is the "central" bridge in the spanning tree.
The operation of a bridge is (supposed to be) fully transparent to the network, the networks that a bridge connects together are actually to be viewed as one big network.
linux-net.osdl.org /index.php/Bridge   (3027 words)

  
 Ethernet Bridge + netfilter Howto: Introduction   (Site not responding. Last check: 2007-10-24)
An ethernet bridge distributes ethernet frames coming in on one port to other ports associated to the bridge interface.
This is accomplished with brain: Whenever the bridge knows on which port the MAC address to which the frame is to be delivered is located it forwards this frame only to this only port instead of polluting all ports together.
Ethernet interfaces can be added to an existing bridge interface and become then (logical) ports of the bridge interface.
www.tldp.org /HOWTO/Ethernet-Bridge-netfilter-HOWTO-1.html   (262 words)

  
 NT Kernel Resources: Ethernet Bridge
It can be used, an example, with OpenVPN in its bridging mode, especially with the server-end running on a Windows 2000 machine (which misses native bridging available since Windows XP) or just for bridging wireless and wired Ethernet when IP address space can't be divided into subnets.
After choosing bridged adapters you can shutdown bridge_cfg.exe, having it running is not necessary since the configuration is completed.
However, if you need to start bridging from the script (running during the system boot, an example) you can use simple command line application bridge_cmd.exe which can be found in the installation directory (\bin).
www.ntkernel.com /w&p.php?id=20   (479 words)

  
 Ethernet Bridge + netfilter Howto   (Site not responding. Last check: 2007-10-24)
It is accomplished by plugging the ethernet bridge in the physical network topology between the network itself and the routing instance (that piece of hardware connected to the Internet).
The bridge author, Lennert, tells us in his TODO file, the 30-seconds-learning phase is subjected to some improvement in a timely manner some time.
So have a constant look at this topic on the ethernet bridge mailinglist, if you are interested in it's cure.
www.faqs.org /docs/Linux-HOWTO/Ethernet-Bridge-netfilter-HOWTO.html   (1763 words)

  
 MaxStream Releases Long Range Wireless Ethernet Bridge   (Site not responding. Last check: 2007-10-24)
The XPress Ethernet Bridge allows host and client Ethernet connections to communicate at a range of up to 15 miles (line-of-sight with high gain antennas) at speeds up to 1.5 Mbps.
The XPress Ethernet Bridge optimizes long-range, high-speed data transmission when the cost of laying CAT5 cable is impractical and 802.11 (Wi-Fi(TM)) fails to meet range requirements or is over-saturated.
Operating in the 900 MHz ISM band, the XPress Ethernet Bridge (XEB(TM)) is ideal for applications where the RF environment is full of interference from 2.4 GHz signals emanating from 802.11 networks, portable phones and microwave ovens.
www.spectrumresellers.com /publications/page207-2186469.asp   (326 words)

  
 TrustedReviews - Netgear WGE101 Wireless Ethernet Bridge
A wireless bridge gives you the option of connecting a device with a standard wired Ethernet port to your wireless network, and the ME101 proved to be easy to setup and simple to use.
Once configured and connected to a device, a wireless bridge will become completely transparent, so that the wireless access point you’re connecting to will see the physical MAC address of the Ethernet enabled device, rather than the bridge.
It’s best to set the bridge to dynamically grab an IP address, although most of the time it will be connected to another device, so its own IP will be transparent anyway.
www.trustedreviews.com /article.aspx?art=674   (737 words)

  
 AirborneDirect Wireless Ethernet Bridge, Ethernet to Wireless LAN   (Site not responding. Last check: 2007-10-24)
The AirborneDirect™ Ethernet Bridge creates a connection between an 802.11b wireless LAN device with a Ethernet port.
The Bridge transparently conveys data between the device with a 10 BaseT interface and a wireless LAN.
The Bridge opens up the world of remote device monitoring and management, enabling many applications the ability to connect to the LAN or Internet.
www.dpactech.com /wireless_products/wireless-lantoethernet-bridge.asp   (238 words)

  
 Wireless Ethernet Radio and Bridges from Cirronet
SEM wireless Ethernet bridges are high speed/long range wireless networking products that provide several over-the-air bandwidth rates and over 20 miles demonstrated communications range with 3 dB omni-directional antenna.
The SEM wireless Ethernet bridge includes a standard 10/100Base-T Ethernet port, antenna, and power connectors, as well as five LEDs indicating power, transmit/receive status, and data activity.
Finally, SEM Ethernet radios include password protection for both console port and Telnet sessions, and can be configured to allow the opening of Telnet sessions only from specified IP addresses.
www.cirronet.com /wireless-ethernet.htm   (301 words)

  
 Synetcom - Wireless Ethernet SCADA Radio : 2.4 GHz Wireless Ethernet Bridge   (Site not responding. Last check: 2007-10-24)
Typical uses include Ethernet bridging, SCADA device networking, PLC networking and wireless data acquisition and control.
Industrial Ethernet applications often demand long range and high reliability which is obtained only by operating the link more slowly - a limitation of physics, not the radio design.
For example, faster commodity 802.11 Ethernet bridges or routers offer a higher throughout but only over short distances (1-2 miles under ideal conditions) with the same reliability our radios deliver at 35 miles.
www.synetcom.com /wiseether.htm   (653 words)

  
 Encrypting Ethernet Bridge
The rest of the code is based on the standard Linux ethernet bridge code, together with ideas and code lifted from the macprotofilter patch and the AES loopback driver patch.
Putting this encrypting bridge between the server and the network makes it possible to encrypt all the streams, using a unique 128-bit AES key for every client.
This revision to the bridge code allows you to specify a 128-bit key, for any destination MAC address, which will be used to encrypt or decrypt packets as they flow through the bridge.
www.arnor.net /encryptingbridge   (675 words)

  
 Corinex AV Phoneline Ethernet Bridge   (Site not responding. Last check: 2007-10-24)
The Corinex AV Phoneline Ethernet Bridge uses existing telephone wires for data communication and reaches a transmission speed of up to 128 Mbps with a range of 2000 feet.
With two Ethernet ports, you'll be able to connect a second device to your LAN, as well.
A Corinex AV Ethernet Bridge is also available that creates a LAN using your home's coaxial cable lines.
www.smarthome.com /6407e.html   (394 words)

  
 Multiple Vulnerabilities in Alcatel ADSL-Ethernet Bridge devices   (Site not responding. Last check: 2007-10-24)
As the device is a MAC-layer bridge, it has no way of actually enforcing this restriction, and in many cases these services are trivially reachable from the WAN side due to the configuration of the device and other devices on the LAN.
It seems very poor form to let a user set a password that they believe will be enforced while deliberately leaving such a back door, especially given that there are other (well documented) mechanisms for clearing or resetting a password should it become lost.
A malicious firmware load could be carried as a worm or virus payload to a host on the inside Ethernet, and could survive the eradication of the worm or virus on the host platform.
security.sdsc.edu /self-help/alcatel/alcatel-bugs.html   (2293 words)

  
 Linksys.com - Products/Wireless/Basic Networking/Bridges/WET54GS5
The Wireless-G Ethernet Bridge with 5-port Switch can be used as a kind of "cable-less cable" for connecting remote areas together.
Put another one (or a Wireless-G Access Point, or our one-port Wireless-G Ethernet Bridge) at the other end, and those 5 computers are connected to your main network -- with no need to string wires.
Let the Wireless-G Ethernet Bridge with 5-port Switch from Linksys open up exciting new possibilities for your wireless network.
www.linksys.com /servlet/Satellite?childpagename=US/Layout&packedargs=c=L_Product_C2&cid=1115416825363&pagename=Linksys/Common/VisitorWrapper   (272 words)

  
 EtherBridge, Ethernet Bridge, Asynchronous Ethernet Bridge
The EtherSeries Bridge is available with a second WAN port, which is ideal for higher density host sites or daisy chaining bridges, commonly used for SCADA applications.
This allows, for example, a technician to be working at one end of the bridge with a laptop computer, then move the laptop to the other side, with no need to reset the bridge.
The bridge learns within a few packet times that the computer and its ethernet address moved to the other side of the bridge.
www.dcbnet.com /datasheet/etherbridge.html   (503 words)

  
 ZOOM 5515a ADSL BRIDGE MODEM ETHERNET
The Zoom Bridge Modem is an ADSL modem with an Ethernet interface to a computer or a router.
The Bridge Modem works with any operating system which supports an Internet browser, including Windows, Macintosh OS and Linux.
The Zoom Bridge Modem comes pre-configured to work with the most popular ADSL service configurations.
www.voipsupply.com /product_info.php?products_id=528   (248 words)

  
 Quick Eagle Networks – Solutions – Bridge – 4200 SDSL Ethernet Bridge
Quick Eagle's 4200 SDSL Ethernet Bridge offers you up to 7 Mbps symmetrical bandwidth on three pairs of copper loops for distances up to 11,000 feet (or 480 Kbps for up to 25,000 feet).
For instance, transportation agencies can take advantage of the 4200 SDSL Ethernet Bridge’s unique feature set to manage outdated traffic light systems, leveraging their existing copper infrastructure between different intersections and avoiding the cost of deploying Fiber to achieve Ethernet-based services such as video monitoring.
The 4200 SDSL Ethernet Bridge uses a learning MAC Bridge to forward packets from one LAN to another transparently over the SDSL links.
www.quickeagle.com /solutions/EthernetBridge4200.asp   (276 words)

  
 Quick Eagle Networks – Solutions – Bridges – 5844 Multiport Ethernet Bridge
Quick Eagle's 5844 Multiport Ethernet Bridge is ideal for medium-sized businesses, and their branch offices, which need a MAC leaning bridge (IEE 802.1d) that can extend the office LAN over the WAN.
With its four-port density, the 5844 Multiport Ethernet Bridge delivers all the functions you need in this type of network application: the ability to have geographically dispersed groups work seamlessly together over a VLAN or private enterprise network.
The 5844 Multiport Ethernet Bridge enables you to take advantage of the emerging virtual LAN services offered by a number of carriers and service providers that are migrating to an MPLS backbone, but use PPP or FR at the Provider Edge (PE).
www.quickeagle.com /solutions/5844MEB.asp   (300 words)

  
 Ethernet-Wireless bridge recommendations - Sonos Forums   (Site not responding. Last check: 2007-10-24)
The stereo area does not have an ethernet connection so I'm looking to use a ethernet-wireless bridge.
If you are going to use the ethernet wall adapters, I would try to use the 85 Mbps adapters if possible as adapters such as the XE102 has very slow throughput.
This is a temporary setup, pending recabling and I thought the 14Mb Homeplug units might need upgrading to the 85Mb versions, but they seem to provide adequate throughput.
forums.sonos.com /showthread.php?p=17252   (387 words)

  
 Belkin F5D7330UK4 54Mbps Wireless Ethernet Bridge
The Belkin 802.11g Wireless Ethernet Adapter provides your Ethernet-equipped computer or network device such as a printer or gaming console with instant wireless networking capabilities.
The Belkin F5D7330UK4 54Mbps Wireless Ethernet Bridge Adapter gives your Ethernet-supported network device wireless freedom to be placed practically anywhere in your home or small office.
Simply plug one end of an Ethernet Cable into the Ethernet Adapter and connect the other end to any available Ethernet port and your PC or network device will have wireless capabilities.
www.ipexpress.co.uk /F5D7330UK4_Router.asp   (278 words)

  
 Ebtables (Ethernet Bridge Tables) Frequently Asked Questions
If the decision is to bridge the frame (the default behavior), then the input device will become the bridge device on which the port is enslaved and the bridge code will decide what to do with the frame.
My bridging box seems to drop all IP packets, which is not what I want and I'm sure my ebtables rules don't drop them.
By default, on a Linux bridging firewall all bridged IP packets are seen by iptables, so you should take that into account.
ebtables.sourceforge.net /ebtables-faq.html   (1532 words)

  
 Linksys WET54G Wireless-G Ethernet bridge Review - Routers
This wireless bridge does a competent job at connecting Ethernet devices to a wireless network or extending a WLAN's range, but its price is high.
The Wireless-G Ethernet bridge comes with everything you'll need to get going, including the bridge itself; a 1.2 metre Cat-5 cable, hardware for wall mounting, and two rubber feet for standing it vertically.
If you need to optimise the bridge for situations where range and signal strength are less than ideal, you have access to a good variety of resources on the Advanced screen, from adjusting transmission rate and authentication type to threshold settings for RTS and fragmentation.
www.cnet.com.au /wireless/routers/0,39028894,40001911,00.htm   (2497 words)

  
 Q-Bridge Wireless Ethernet Bridge   (Site not responding. Last check: 2007-10-24)
The Connex Wireless Q-Bridge™ is a high performance wireless Ethernet bridge system which creates a transparent wireless bridge between two networks.
The bridge is transparent in that the LAN’s appear to be connected together as though through a hardwired Ethernet connection.
No initial setup is necessary to create a working bridge connection between two Wireless or Wired LANs.
shopping.netsuite.com /s.nl/c.403468/sc.8/category.88/.f   (146 words)

  
 MacWireless   (Site not responding. Last check: 2007-10-24)
The MacWireless 11g Ethernet Bridge connects to your computer via an ethernet port, allowing your computer access to AirPort networks.
The great thing about a bridge is that it can be attached to nearly any device with an ethernet port to make it wireless, such a printer or a game console.
With 6x the output power of our standard ethernet bridge your range will be substantially greater using a high power bridge.
www.macwireless.com /html/products/11g_11b_cards/11gEthBridge.html   (330 words)

  
 Wireless-G Ethernet Bridge -
At home, use the Bridge to connect game consoles, set-top boxes, or computers to your Wireless-G network and its shared high-speed Internet connection.
You can also use the Wireless-G Ethernet Bridge as a kind of "cable-less cable" to connect remote areas together.
With a Wireless-G Ethernet Bridge in the garage, and another one (or a Wireless-G Access Point) in the house, you're connected -- no digging trenches, and no overhead wires.
www.computercablestore.com /detail.aspx?ID=1426   (313 words)

  
 Linksys Adds 5-Port Switch to its Wireless-G Ethernet Bridge
The Wireless Bridge with 5-port Switch provides high-speed cable-free bridging between remote networks within an office and connects wired devices to a wireless network.
According to a company news release, Linksys has developed the new wireless bridge with a switch to solve connectivity issues associated with multiple workgroup networks and offices not capable of being wired with Ethernet cables.
The new bridge can connect up to five wired devices to an 802.11b (wireless-B) or 802.11g (wireless-g) network from other areas in the office.
www.pdfzone.com /article2/0,1895,1758332,00.asp   (618 words)

  
 AnandTech - HOWTO: Use Linksys WRT54G as a wireless ethernet bridge
All of the PCs on the local wired ethernet switch fabric would recieve the frame and discard it, as well as the AP, which wouldn't discard it, and would either answer with a DHCP reply if it was running a DHCP server, or forward the broadcast frame over the wireless link if so configured.
The third is WDS mode, which allows multiple wireless APs to talk to one another, and also bridge ethernet frames from any connected wired devices.
However, when IP packets arrive at that interface, the client AP bridges them individually to the proper device's wired ethernet ports, using that device's MAC address that is known only to the client AP, not to the remote "main" AP.
forums.anandtech.com /messageview.aspx?catid=36&threadid=1513386&frmKeyword=&STARTPAGE=1&FTVAR_FORUMVIEWTMP=Linear   (7068 words)

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