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--- peering-toolbox:what-is-peering:the_internet_eco-system [2023/03/27 00:20] – [Content Distribution Networks] philip
+++ peering-toolbox:what-is-peering:the_internet_eco-system [2023/03/27 00:26] (current) – [Access Providers] philip
@@ Line 23: / Line 23: @@
 Some Access Providers may also provide transit to other (smaller) Access Providers.
-{{:peering-toolbox:what-is-peering:access-provider.png?300|}}
+{{ :peering-toolbox:what-is-peering:access-provider.png?300 |}}
 ===== Regional Providers =====
 Have a presence in many economies. They provide transit to Access Providers, and may be Access Providers themselves (either directly or through specific local subsidiaries).
@@ Line 29: / Line 29: @@
 They buy transit from their upstream providers and usually participate at Internet Exchange Points.
-{{:peering-toolbox:what-is-peering:regional-provider.png?300|}}
+{{ :peering-toolbox:what-is-peering:regional-provider.png?300 |}}
 ===== Global Providers =====
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 Content Providers who operate their own CDN use the same approach but the content distributed by their CDN is specific to just the Content Provider itself.
-{{ :peering-toolbox:what-is-peering:content-plus.png?500 |}}
+{{ :peering-toolbox:what-is-peering:content-plus.png?600 |}}
+In the diagram, one Access Provider at IXP A hosts an embedded cache from CDN 1, and an Access Provider at IXP B hosts an embedded cache from CDN 3. Two other Access Providers only have a PNI with CDNs at the IXPs (no embedded cache server), and the other two Access Providers simply peer across the IX fabric (no PNI and no embedded cache server).
 ===== Internet Exchange Points =====