A fiber media converter is a simple networking device that makes it possible to connect two dissimilar media types such as twisted pair with fiber optic cabling. They were introduced to the industry in the 1990s, and are important in interconnecting fiber optic cabling-based systems with existing copper-based structured cabling systems. They are also used in metropolitan area network (MAN) access and data transport services to enterprise customers.
Fiber media converters support many different data communication protocols including Ethernet, Fast Ethernet, Gigabit Ethernet, T1/E1/J1, DS3/E3, as well as multiple cabling types such as coax, twisted pair, multi-mode and single-mode fiber optics. Media converter types range from small standalone devices and PC card converters to high port-density chassis systems that offer many advanced features for network management.
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Fiber media converters can connect different local area network (LAN) media, modifying duplex and speed settings. Switching media converters can connect different speed network segments. For example, existing half-duplex hubs can be connected to 100BASE-TX Fast Ethernet network segments over 100BASE-FX fiber.
When expanding the reach of the LAN to span multiple locations, media converters are useful in connecting multiple LANs to form one large campus area network that spans over a limited geographic area. As premises networks are primarily copper-based, media converters can extend the reach of the LAN over single-mode fiber up to 160 kilometers with 1550 nm optics.[citation needed]
Wavelength-division multiplexing (WDM) technology in the LAN is especially beneficial in situations where fiber is in limited supply or expensive to provision. As well as conventional dual strand fiber converters, with separate receive and transmit ports, there are also single-strand fiber converters, which can extend full-duplex data transmission up to 120 kilometers over one optical fiber.[citation needed]
Managed converters are usually of the switching kind and can additionally be managed by a network connection or a local console. However, most often pluggable transceivers are used instead when appropriate equipment already exists.
As network complexities increase and distance requirements grow, network administrators are challenged with meeting new requirements and integrating new with old infrastructures; whether it be connecting copper to fiber, or single-mode to multimode fiber networks. ProLabs offers a range of media converters that support a variety of cable and connector types to seamlessly integrate disparate networks.
Some of my co workers are convinced that newer model media converters we are using are storing mac addresses like a switch would. Reason for this assumption is we have noticed that if we unplug the device on the media converter and then plug in a second device, the second device will not authenticate, because the switch is still seeing the first mac. The fix for this seems to be power cycling the media converter. Shutting and no shutting the switch interface does not seem to fix it, only power cycling the media converter.
We actually had a device that was connected and failing mab authentication, but even when the device was removed, we still saw logs populating on the switch saying the device was failing. Personally, I was thinking this could be something with DHCP snooping still holding the mac in the database, or maybe some kind of AAA thing. But I really dont see how a media converter could be holding a mac, unless im wrong.
Hi so we are connecting a sign to our network and using 1000 Mbps gigabit sm fiber ethernet media converter on both ends. On one end it connects to a 1000 Mbps gig switch port and on the other end its connected to a 10/100 Mb sign ethernet port. Is the media converters able to allow the sign to communicate over it even though it is a 100 Mb device? Right now I can only see the switch port as connected at 1000 Mbps but can't talk to the sign.
When I tried to move them to production I ran into an issue. the link between the two is via media converters/fiber. When I went to hook the two up, it did nothing. No ports would light up on either side. I tried making them both "trunk" ports (no dynamic) with dot1q encapsulation on the 3560. Still would not work. I also made sure both were no shutdown.
When I pulled the connection (media converter) from the 3560 and placed it back into the old 2950 it was originally in (old 2950-no trunk port to new 2950-trunk port on fe0/1) now the ports lit up and turned green. I do need the trunk coming from the 3560 working though.
All of the wiring works good because the setup now (legacy setup that I need to change) works fine. Currently one end of the media converter link is hooked into a 2950 and the other end is going to a smaller Cisco switch. The end devices on that smaller Cisco switch communicate back fine, which rules out physical issues with the media converter or wiring.
You have cabling issues or issues with the 3560 or 2950 port speed and duplex setup. Normally it takes a crossover cable not straight thru between switches unless auto mdix is supported . Auto mdix is supported on the 3560 but only if the port speed and duplex is set to auto on the 3560. The 3560 will then auto correct for the incorrect cable.If you hardcode the port speed and duplex and you have the wrong cable it will just shutdown the port. The 2950 does not support auto mdix so you have to have the correct cable when you plug into the media converter, so it may work betwetween the 2950 and the 3560 because the 3560 auto corrects for the wrong wiring but it may not work with the media converter. If you got no link on the 3560 side to the media converter verify port speed setting is at auto for speed and duplex , if you hard coded the port that may not work either. Check media convertor specs on what the copper interface supports. The smaller cisco switch works ok because probably that supports the mdix function also.
Thanks for chiming in. Guru, I should have been more specific with the media converter definition in my case. sorry. The media converter that I am using is one that converts multimode fiber with ST connectors to copper RJ-45. I thought about using the Gb ports like in your picture but the fiber coming in has the ST and not the LC connectors needed.
Glen, that does make sense what you wrote. One question though, I did try to change out one of the copper cables over to a crossover cable coming off of the media converter. It still did not detect. Do I need to change both copper cables (on each end) over to crossover cables to have it correctly crossed over?
Network managers are pushed continuously to provide the transmission of data at faster speeds over longer distances. They also face the additional challenge of connecting different cable types (CAT5/6/7, coax, single-mode fiber, multi-mode fiber, etc.). Here is where the media converter enters the picture.
Local Area Networks (LANs) are complicated. They need data to travel at higher speeds and longer distances. Media converters offer a solution to these challenges by providing fiber when required and smoothly integrating new equipment into an existing cable infrastructure. Media converters help create a reliable, cost-effective network. Here are the major benefits of a media converter:
Red Lion's N-Tron series 102 media converters offer a wide operating temperature in a small footprint. With excellent EMI protection and metal DIN-rail mountable enclosures, discover how our 102 media converters can easily expand your industrial Ethernet network. Learn more.
Red Lion's N-Tron series 1000 media converters offer gigabit speed and wide operating temperatures in a small footprint. With excellent EMI protection and metal DIN-rail mountable enclosures, find out how our 1000 media converters can easily expand your industrial Ethernet network. Learn more.
Red Lion's Sixnet series SL media converters are ideal for light to moderate industrial applications. Available with Ethernet and fiber options, our SL media converters offer protected circuitry, lexan housing and DIN-rail mounting to meet your industrial requirements. Learn more.
Red Lion's Sixnet series SLX media converters are ideal for harsh industrial applications. Available with Ethernet and fiber options, our SLX media converters offer protected circuitry, rugged IP40 protected metal housing and DIN-rail mounting to meet your industrial requirements. Learn more.
Use reliable fiber media converters from Intellinet Network Solutions for long-distance network applications. Media converters can facilitate fiber optic connections up to 12.4 miles in length. Businesses can connect remote locations to their core networks with the help of long-distance fiber networking solutions.
Fiber solutions offer superior data security and immunity to EMI interference. Intellinet fiber media converters are ideal for long-distance networking applications such as connecting buildings or connecting floors within a building. Intellinet Media Converters can be purchased in either single-mode (LX) or multi-mode (SX) fiber, as well as in dual-wavelength multiplexing (WDM) or bidirectional (BiDi) configurations.
Connecting the converter to fiber segments can further extend distances between networking nodes. This can be achieved by direct connection between the converter and a fiber-based node or networking device.
Network managers can install fiber cabling anywhere within a network without changing the arrangement of copper-based Ethernet. The compact size of the converter allows it to be easily deployed in any narrow desktop location or to be used in a wall-mount installation. Several converters can be simultaneously installed into a 19" rack-mountable chassis.
The media converter supports auto negotiation. The 1000Base-X fiber interface negotiates according to 802.3 clause 37. The 10/100/1000Base-T negotiates according to 802.3 clause 28 and 40. The 1000Base-X will link up with its partner after the highest common denominator (HCD) is reached and the copper has linked up with its partner. The 1000Base-X will continue to cycle through negotiation transmitting a remote fault of offline (provided this is enabled through the switch setting) until the copper is linked up and the HCDs match. ff782bc1db
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