Chapter 16: Dynamic Routing Protocols
STANDARD Revision 1.0 C4® CMTS Release 8.3 User Guide
© 2016 ARRIS Enterprises LLC. All Rights Reserved. 462
Route Reflectors
Route reflectors are commonly used to reduce the number of peering groups. In the figure below, the C4/c CMTS acts as a
route reflector client, and shows a complete RAN running iBGP with route reflection.
Figure 81: BGP Network Topology with Route Reflections and an OSPF Overlay
In the example above, each region is defined as a RAN with a single OSPF area. OSPF summarization occurs at each area
border router, and therefore OSPF SPF calculations occur for each RAN.
Scalability Benefit
This network topology provides a substantial scalability benefit to the C4/c CMTS in that it does not need to establish a
peering session with each BGP enabled router in the RAN.
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