From: Router-level community structure of the Internet Autonomous Systems
Chain | Number of cases | Typical configuration |
---|---|---|
| 193,398 | Internal AS connection |
| 90,307 | Internal AS tunnel |
| 86,775 | Inter-AS tunnel |
| 57,988 | Inter-AS tunnel |
| 32,473 | Internal AS tunnel |
| 28,774 | Inter-AS tunnel |