Marconi claims to command 30 per cent of the global SDH product market, also known as Sonet (synchronous optical network) in the US. The agreement will last seven years, and is an extension of the firms' SDH cooperation agreement.
The advent of its fatter version is opening up the transfer of WAN data from ATM, frame-relay or packet over SONET/SDH to a potentially more efficient and cheaper method. Even Andrew Rufener, ambassador to the ATM Forum and director of technology...
Nothing here, it would seem, to challenge the incumbent technologies, most notably Sonet/SDH (synchronous digital hierarchy), a transmission standard used by most of the world's carriers today. The cost to the carrier of installing a Gigabit...
Since the network cards are probably the most important piece of hardware in a firewall and you need them to function reliably, I strongly recommend that you use 3Com or Intel PCI network cards and not any of the cheap substitutes.
The new products are also expected to offer higher amounts of cache memory and to reflect a switch from RAID-1 technology to a newer RAID-5 approach, which lets data be stored 'redundantly' - or in more than one place for backup purposes - but...
Existing metro networks have used Sonet/SDH, an expensive but reliable network designed to carry voice traffic reliably on ring networks. Until now, metro networking has come at the cost of of a major step change from Ethernet to more expensive...