SLA Support in the ISP Environment
Supporting SLAs in ISP environments can be done by means of multiple technologies. One of the possible ways to provide SLA support is by operating different physical networks. Another approach is to use a technology such as DiffServ.
SLA Support by Operating Multiple Networks
When different service levels are implemented as different networks, the structure of the operator's network looks like Figure 4.3. Packets belonging to different service levels are directed to different networks. This function is also known as alternate routing. With this approach, the core network is effectively split into two core subnetworks.
Figure 4.3. Parallel Physical Subnetworks for SLA Support
The responsibility of identifying ...
Get Policy-Based Networking: Architecture and Algorithms now with the O’Reilly learning platform.
O’Reilly members experience books, live events, courses curated by job role, and more from O’Reilly and nearly 200 top publishers.
