BGP Communities Guide
Tag and control traffic behavior on the Aristo Networks backbone (AS216265).
Introduction
Border Gateway Protocol (BGP) communities allow customers to influence routing decisions across the Aristo Networks backbone (AS216265). By tagging routes with specific community values, customers can request traffic engineering changes such as preferring or deprioritizing certain upstreams, controlling export policies, or managing blackholing.
Standard Communities
Below is a summary of commonly used communities:
| Community | Description |
|---|---|
| 216265:100 | Do not announce to upstream providers |
| 216265:200 | Do not announce to Internet Exchanges (IX) |
| 216265:300 | Do not announce to peers |
| 216265:666 | Blackhole (discard traffic to the prefix) |
Traffic Engineering
Customers can also use specific BGP communities to prefer or de-prefer certain upstream providers for inbound traffic. This allows greater control over latency and redundancy in multi-homed setups.
- 216265:1000 – Prefer Upstream A
- 216265:1001 – De-prefer Upstream A
- 216265:1100 – Prefer Upstream B
- 216265:1101 – De-prefer Upstream B
(* Replace with actual upstream policies as finalized.)