| Characterization of failures in an operational IP backbone network Recent countries visiting this post |  |
 | 9 | United States |
 | 1 | Brazil |
 | 1 | China |
 | 1 |
| Characterization of failures in an operational IP backbone network Recent countries visiting this post | |
| 9 | United States |
| 1 | Brazil |
| 1 | China |
| 1 |