Resources
BGP community
Members can steer how their prefixes are propagated by the nusa-IX route servers (AS212001) using standard and large BGP communities.
About
By default the route servers announce every accepted prefix to all members. Attach the communities below on the prefixes you send to rs1.nusaix.com to filter, prepend or blackhole per member. In the tables, peer-as is the 16-bit ASN of the member you want to target; for 32-bit ASNs use the large community form.
Announcement control
| Standard | Large | Action |
|---|---|---|
| 0:212001 | 212001:0:212001 | Do not announce to any nusa-IX member |
| 212001:212001 | 212001:1:212001 | Announce to all nusa-IX members (default) |
| 0:peer-as | 212001:0:peer-as | Do not announce to this member ASN |
| 212001:peer-as | 212001:1:peer-as | Announce to this member ASN only |
AS path prepending
| Large | Action |
|---|---|
| 212001:101:peer-as | Prepend own ASN once to this member ASN |
| 212001:102:peer-as | Prepend own ASN twice to this member ASN |
| 212001:103:peer-as | Prepend own ASN three times to this member ASN |
| 212001:101:212001 | Prepend own ASN once to all members |
| 212001:102:212001 | Prepend own ASN twice to all members |
| 212001:103:212001 | Prepend own ASN three times to all members |
Blackholing (RTBH)
| Community | Action |
|---|---|
| 65535:666 | RFC 7999 blackhole, drop traffic to this prefix on the fabric |
| 212001:666:212001 | Blackhole announcement to all members accepting RTBH |
| 212001:666:peer-as | Blackhole announcement to this member ASN only |
Informational communities
| Community | Meaning |
|---|---|
| 212001:1000:1 | Prefix learned in Surabaya (OMADATA - E1 - SUB) |
| 212001:1001:1 | Prefix validated as RPKI valid |
| 212001:1001:2 | Prefix accepted from IRR object |
Example
! do not announce 203.0.113.0/24 to AS64500 route-map NUSAIX-OUT permit 10 match ip address prefix-list MY-PREFIXES set community 0:64500 additive ! ! blackhole a /32 towards all members route-map NUSAIX-RTBH permit 10 set community 65535:666 212001:666:212001 additive
Notes
- Communities are stripped from prefixes before they leave the fabric.
- RTBH announcements are accepted for /32 (IPv4) and /128 (IPv6) only.
- Unknown 212001:x:y communities are ignored, not rejected.