Community-IX
| RFC1997 Community | Large BGP Community | Meaning |
|---|---|---|
| 0:X | 57555:0:X | don’t announce to AS X |
| 57555:X | 57555:1:X | announce to AS X |
| 0:57555 | 57555:0:0 | don’t announce to any AS |
| 57555:920:X | don’t announce to region X | |
| 57555:921:X | announce to region X | |
| 57555:920:0 | don’t announce to any region | |
| 57555:999:X | blackhole in AS X | |
| 57555:999:0 | blackhole in each AS | |
| 57555:910:X | announce to AS X with RFC3765 NOPEER attached |