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Atlantech Online BGP Community Definitions
| Filtering on /24 boundary is applied - we do not re-advertise any route more specific than a /24 to external peers. |
Route Acceptance Policy
Routes will not be accepted if any other community than what is listed below is being seen from customer announcements.
Prefix Type Communities
- 7784:1000 - Customer route
- 7784:1100 - Private Peer route
- 7784:1200 - NSP route
- 7784:7784 - AOI Aggregate Netblocks
NSP Prefix Origin Communities
- 7784:1260 - GTT
- 7784:1270 - Cogent
- 7784:1280 - Zayo
- 7784:1290 - Hurricane Electric
- 7784:1110 - Ashburn Private peers (Equinix)
- 7784:1120 - Silver Spring Private Peers (LINX)
Community Definition - Local Preference/No-Export
By default, peer routes are assigned a local preference of 80. Customer routes learned over NSP or private peering links will never be preferred over a direct customer connection without prior approval by Atlantech Online engineering staff. This includes more specifics of customer aggregate blocks.
Atlantech provides local-preference control for customer links (settable by customer).
- 7784:90 - Set local preference 90
- 7784:120 - Set local preference 120
- no-export - Set do not export beyond AS7784
By default, customer routes are assigned a local preference of 100.
Atlantech provides community values to its customers so that they may affect traffic flows for their prefixes off-net.
These communities are provided as-is and no guarantee is made as to their effectiveness. The routing policies of peers can and do change periodically. Atlantech Online will make a best effort to ensure that the "influence peer" community policies below work to the best of our knowledge.
Current Atlantech NSP Peer List:
- AS174 - Cogent (Ashburn, VA)
- AS3257 - GTT (Los Angeles, CA)
- AS6461 - Zayo (Philadelphia, PA)
- AS6939 - Hurricane Electric (Ashburn, VA / Philadelphia, PA / Los Angeles, CA)
| Community Definitions | |
| 10:12000 | Set localpref to 'peer level' on all Atlantech Tier 1 Peers |
| 7784:1200[1-3] | Prepend AS7784 1-3 times to all NSP peers |
| 7784:12000 | Do not announce to any NSP peers |
| 666:12000 | Do not announce past any NSP peers |
| 7784:1260[1-3] | Prepend AS7784 1-3 times to GTT |
| 7784:12609 | Announce only to GTT |
| 7784:12600 | Do not announce to GTT |
| 60:3257 | Set localpref to 60 in GTT |
| 70:3257 | Set localpref to 70 in GTT |
| 80:3257 | Set localpref to 80 in GTT |
| 666:3257 | Do not announce past GTT (no-export) |
| 7784:1280[1-3] | Prepend AS7784 1-3 times to Zayo |
| 7784:12809 | Announce only to Zayo |
| 7784:12800 | Do not announce to Zayo |
| 60:6461 | Set localpref to 60 in Zayo |
| 70:6461 | Set localpref to 70 in Zayo |
| 80:6461 | Set localpref to 80 in Zayo |
| 90:6461 | Set localpref to 90 in Zayo |
| 180:6461 | Set localpref to 180 in Zayo |
| 220:6461 | Set localpref to 220 in Zayo |
| 666:6461 | Do not announce past Zayo (no-export) |
| 7784:1290[1-3] | Prepend AS7784 1-3 times to Hurricane Electric |
| 7784:12909 | Announce only to Hurricane Electric |
| 7784:12900 | Do not announce to Hurricane Electric |
| 7784:1110[1-3] | Prepend AS7784 1-3 times to Ashburn Private Peers |
| 7784:11109 | Announce only to Ashburn Private Peers |
| 7784:11100 | Do not announce to Ashburn Private Peers |
| 7784:1120[1-3] | Prepend AS7784 1-3 times to Silver Spring Private Peers |
| 7784:11209 | Announce only to Silver Spring Private Peers |
| 7784:11200 | Do not announce to Silver Spring Private Peers |
| 7784:1270[1-3] | Prepend AS7784 1-3 times to Cogent |
| 7784:12709 | Announce only to Cogent |
| 7784:12700 | Do not announce to Cogent |
| 10:174 | Set localpref to 10 in Cogent |
| 70:174 | Set localpref to 70 in Cogent |
| 120:174 | Set locapref to 120 in Cogent |
| 140:174 | Set localpref to 140 above default in Cogent |
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