Specifications

CHAPTER
2-1
Cisco Internet Streamer CDS 2.0-2.3 Software Configuration Guide
OL-13493-04
2
Network Design
Provisioning the Cisco CDS consists of two stages:
• Register the devices to the Internet Streaming CDSM and define the network topology and device
groups.
• Configure the delivery services that deliver content to the clients.
This chapter describes the details of the two stages of provisioning a Cisco CDS network and how
metadata and content flow through the Cisco CDS. This chapter has the following major topics:
• Cisco CDS Topology, page 2-1
• Delivery Service, page 2-3
• Service Workflow, page 2-7
• Programs, page 2-9
Note In order to achieve the best throughput, we recommend you configure a port channel for the four Gigabit
Ethernet ports on the line card. For more information, see the “Configuring Port Channel” section on
page E-1.
Cisco CDS Topology
In the Cisco CDS the Service Engines are grouped together into locations, such that a Location Tree is
a set of locations organized in the form of a tree. The Location Tree represents the network topology
configuration that is based on parent-child relationships. Locations are well connected and have similar
connectivity properties to the outside world. A location generally implies topological proximity. Each
location can have a parent relationship and multiple child relationships, such that each location can have
zero to one parent locations and zero to many child locations. These relationships guide how content
flows among locations but does not restrict content flow in any direction.
Locations are also classified into tiers. Each tier consists of locations belonging to the same tier. All
locations with no parents belong to Tier 1. All locations that are children of Tier 1 locations belong to
Tier 2.
The Cisco CDS can consist of one or more topological Location Trees. A Cisco CDS network is limited
by the maximum depth of four tiers.
Figure 2-1 illustrates two location trees, with the parent-child relationship of each location indicated by
a solid line and each tier indicated by a dotted line.