Ethernet Private Network Services
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Ethernet Private Network
Seamless networking for your locations
Ethernet Private Network (E-PN) offers any-to-any connectivity at Ethernet level. This means that the LANs in each branch office can communicate with every other branch office in the network via a logical any-to-any topology. The E-PN service is a Layer 2 VPN service with switching functionality implemented in the provider network. This allows any Internet frame entering the network at one location to be switched and forwarded to any other location.
Services at a glance:
The following can be offered:
- Any-to-any switched services
- Bandwidths from 2 Mbit/s to 1 Gbit/s
- A dedicated service for each individual customer
- Metro, national and international coverage with off-net access
This service is provided via a star topology, which means that all sites can communicate with each other without the need for additional switching or routing equipment. The service uses Ethernet via SDH or native Ethernet technology and ensures compliance with the guaranteed performance values. All interfaces are transparent to Layer 2 protocols. Each network has a fail-safe switching point that is set up at a provider node.
>20%
Savings
99,99%
Availability
24/7
Support
Customers
Features of an Ethernet Private Network
Individual network configuration
- Layer 2 private network with any-to-any connections
- Configure networks according to your own requirements
- Make changes simply and easily
- Each branch communicates via logical star topology
- Switched service: Ethernet frames immediately forwarded to the destination
Reduction in total cost of ownership
- WAN operating costs up to 30 % lower
- Fewer systems required
- Connections cheaper than classic leased lines & ATM/Frame Relay
- Utilization of existing LAN expertise also in the WAN
Transparent protocol support
- Ethernet via SDH or native Ethernet technology
- Interfaces fully transparent for layer 2 protocols
- Operation of own VLANs, broadcast & multicast domains
- Uniform network independent of metro, national or international connections
Flexible expansion of locations and bandwidths
- Bandwidths can be adjusted per location at any time
- New locations can be added easily
- Bandwidth increase possible in smaller steps than with other technologies
Fine bandwidth granularity & guaranteed bandwidth
- Scaling from 2 Mbit/s to 1 Gbit/s in small steps
- Payment only for bandwidth actually required
- Guaranteed bandwidth per location
- Class of service (CoS) up to 100 Mbit/s
- Prioritization of certain data streams possible
- Efficient bandwidth utilization for greater business efficiency
High reliability & security
- Reliability, security and performance as core features
- Provision via dedicated lines
- Reliable availability of all three elements
Topology & architecture of the Ethernet Private Network
Architecture & Topology
Ethernet Private Network offers customers network connectivity for multiple locations. E-PN corresponds to the MEF’s E-LAN definition for an Ethernet Virtual Connection (EVC).
The physical architecture is a star topology that enables logical any-to-any communication.
- Optimization possible through switch nodes close to the primary location
- Primary location = hub point of most data streams or centrally located access point
- Geographical location of the primary site determines the position of the switch node in the provider network
Switching & extensions
The network card for switching is installed at the provider node closest to the primary location specified in the order form. All E-PN access locations are routed via this switch location.
- Up to three switching nodes possible with regional site concentration (Distributed E-PN)
- Minimization of latency times in geographically separated networks
- Multiplexed Ethernet UNI: several EP-LAN services per customer interface, separated via VLAN
- This option is referred to as EVP-LAN
Tree topology (Root & Leaf)
Based on the MEF E-Tree definition, the E-PN service can also be implemented as an EP-Tree service (bidirectional point-to-multipoint EVC, Rooted Multipoint Ethernet Virtual Connection).
- Root locations: Access to all other locations (Roots and Leaves)
- Leaf locations: Access to root locations only
Several EP tree services per customer interface possible (Multiplexed Ethernet UNI, separated via VLAN). This option is referred to as EPP tree.
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