Architecting a Hybrid Mobility Strategy : Long-Distance Networking Summary
   
Long-Distance Networking Summary
The following table contains a summary of the WAN technologies discussed that could potentially be used for our specific use case, to connect multiple data centers. Note that the values provided here are generalizations. The actual values depend on various factors such as the Service Provider’s equipment, media, and so on.
Table 4. Long-Distance Networking Summary
 
Dark Fibre
CWDM
DWDM
SONET/SDH
MPLS
IP (Internet)
Distance
40 km+
Less than 100 km
Up to 200 km (see Note)
1000s of km
Unlimited
Unlimited
Latency
5 /km
5 /km
Low
Medium
Variable
Variable (high)
Channels
N/A
Up to 16
100+
N/A
N/A
N/A
Bandwidth
100 Gbps+
10 Gbps (per channel)
40 Gbps (per channel)
10 Gbps
Variable
Variable
Reliability
1x10 12
1x10 12
High
High
High
High
Cost
Low/High
Medium
High
Medium
Low
Low
Type
Private Leased
Private Leased
Private Leased
Leased
Private Leased
Shared
 
Note With the appropriate equipment and media, DWDM can be extended beyond 200 km, but 200 km is the typical limitation for most use cases.