Architecting a Hybrid Mobility Strategy : WAN Considerations Summary
   
WAN Considerations Summary
When evaluating the options to achieve the most viable design for the proposed hybrid architecture, a number of key design factors must be considered. The following table highlights the key drivers for most designs.
Table 3. WAN Design Considerations Summary
Design Factors
Design Considerations
Distance
• Distance limitations for dark fibre, CWDM, and DWDM
• SONET/SDH, MPLS, and IP have unlimited distances, but latency must be considered
Speed
• Privately owned solutions provide guaranteed bandwidth
• Leased solutions can vary.
o Dark fibre, CWDM, DWDM, and SONET/SDH provide guaranteed bandwidth
o MPLS and IP often provide variable bandwidth because they are shared
Cost
• Privately owned requires the purchase of equipment
• Leased solutions typically include some of the required equipment as part of the lease agreement
Redundancy
• Redundant physical paths
• Multiple Service Providers
• Mixed solutions