Why Carrier Ethernet?
Slow recovery time and network delays are not an option in critical communications. Networks must be reliable, scalable, and avoid delay. Carrier Ethernet provides a scalable solution with quick fault recovery and stable communications.
Ethernet Ring Protection Switching (ERPS)
As many networks move toward carrier Ethernet and replace SONET/SDH networks, ring recovery and interoperability between brands are growing concern. One main concern is preventing a broadcast storm while minor differences between devices result in less resiliency and longer training and setup times.
As an effort to resolve this issue, ITU-T (International Telecommunication Unit) created Ethernet Ring Protection Switching (ERPS) under G.8032 Recommendation. ERPS helps achieve high reliability and network stability by providing sub-50ms protection and recovery switching for Ethernet networks in a ring topology. Loop avoidance is done by designating one ring node as responsible for blocking traffic. When a link fails, the designated node unblocks allowing traffic to continue.
The G.8032 standard protocol allows users to have different brands while ensuring network reliability and resiliency. G.8032v1 supported a single Ethernet ring while G.8032v2 added more features including support for multiple rings/ladder network.
E-Line: Ethernet Virtual Private Line
Ethernet Private Line (EPL) or Ethernet Virtual Private Line (EVPL) provides dedicated bandwidth between two points. Using an Ethernet virtual connection (EVC) between a pair of dedicated user-network interfaces (UNIs), E-line replaces traditional private line services and offers more bandwidth at a lower cost.
EVPL allows users to instantly and securely communicate between two UNIs. This private connection heightens network efficiency providing stable, secure, and efficient data transmission.