Bi-Directional Optical TransceiversAvailable now for use at our LINX Manchester exchange.
What is a Bi-Directional Optical Transceiver and How Does it Work
Bi-directional optical transceivers (or BiDi transceivers for short) allow the transmitting and receiving of data on a single fibre.
When connecting to the London Internet Exchange most members will connect using a fibre pair or cross connect. One fibre is dedicated to receiving data from network equipment and the other fibre will be dedicated to transmitting data to the network.
Bi-Di optics split the light into different wavelengths using wave division multiplexors (WDM). They must work as a matched pair having the correct receive and transmit wavelength.
If you are interested in ordering a BiDi transceiver please complete the new/upgrade portal form and tick the checkbox that appears for BiDirectional Optic when ordering at LINX Manchester.
Benefits of Bi-Directional Optics
- Reduced interconnect costs
- Doubles the capacity of each cross connect
- Optical Distribution Frame (ODF) port reduction
- Conduit space saving
- Ports charged at the same rate as traditional optics
Usual naming convention has one device referred to as upstream and one as downstream. For delivery of the LINX Bi-Di product LINX will always be the downstream device.
The member will have to purchase the corresponding downstream device.
The wavelengths of its Bi-Di transceivers are as shown in the table below.
|Port Size||Member Side|
|10G||Transmit (nm) 1270|
Receive (nm) 1330
|Transmit (nm) 1330|
Receive (nm) 1270
BiDi Transceivers are currently only available for 10G ports and there is no additional charge for use other than a £200 installation charge.
LINX Services Continued
The LINX multilateral route servers are provided to all members free of charge.
There are 2 of these servers on each of the LINX London peering LANs for additional resilience. Almost 65% of LINX members peer using this method advertising over 70,000 routes. LINX Manchester, LINX Scotland, LINX Wales and LINX NoVA also have route servers available to their members.
LINX operates a route collector on each Peering LAN powered by Alice & Birdwatcher
These serve primarily as a monitoring and troubleshooting tool for both LINX and our members. It is mandatory for each member to have a peering session with the collectors. Members can access the collector data through the looking glass service, that is accessible through our member portal.
The three Meinberg stratum 1 NTP Servers are available to all LINX members including those who are connected to LINX Manchester, LINX Scotland, LINX Wales and LINX NoVA.
The LINX stratum 1 time servers distribute high accuracy time, derived from a variety of time sources (GPS, DCF77 and MSF signals)
The servers are available for members to syncronise their own NTP servers with, which in turn provide a Stratum 2 NTP server for their internal network and customers (Rather than using the LINX NTP servers directly for every device/customer).