Supported BGP Communities / 支持的 BGP 社区

We adopted the BGP community settings recommended in the DN42 Wiki. At the same time, we recommend that other networks deploy similar strategies.

我们采用了 DN42 Wiki 中推荐的 BGP 社区设置。同时,我们建议其他网络部署类似的策略。


Continent / 大洲

  • (64511, 41) :: Europe / 欧洲
  • (64511, 42) :: North America-E / 北美东部
  • (64511, 43) :: North America-C / 北美中部
  • (64511, 44) :: North America-W / 北美西部
  • (64511, 45) :: Central America / 中美洲
  • (64511, 46) :: South America-E / 南美洲东部
  • (64511, 47) :: South America-W / 南美洲西部
  • (64511, 48) :: Africa-N (above Sahara) / 撒哈拉以北非洲
  • (64511, 49) :: Africa-S (below Sahara) / 撒哈拉以南非洲
  • (64511, 50) :: Asia-S (IN,PK,BD) / 南亚
  • (64511, 51) :: Asia-SE (TH,SG,PH,ID,MY) / 东南亚
  • (64511, 52) :: Asia-E (JP,CN,KR) / 东亚
  • (64511, 53) :: Pacific / 太平洋

Bandwidth / 带宽

  • (64511, 21) :: bw >= 0.1mbit
  • (64511, 22) :: bw >= 1mbit
  • (64511, 23) :: bw >= 10mbit
  • (64511, 24) :: bw >= 100mbit
  • (64511, 25) :: bw >= 1000mbit
  • (64511, 2x) :: bw >= 10^(x-2) mbit

bw = min(up,down) (for asymmetric connections) / (对于非对称带宽链路)


Latency / 延迟

  • (64511, 1) :: (0, 2.7ms]
  • (64511, 2) :: (2.7ms, 7.3ms]
  • (64511, 3) :: (7.3ms, 20ms]
  • (64511, 4) :: (20ms, 55ms]
  • (64511, 5) :: (55ms, 148ms]
  • (64511, 6) :: (148ms, 403ms]
  • (64511, 7) :: (403ms, 1097ms]
  • (64511, 8) :: (1097ms, 2981ms]
  • (64511, 9) :: 2981ms
  • (64511, x) :: [exp(x-1), exp(x)] ms (for x < 10)

Tunnel Type / 隧道类型

  • (64511, 31) :: not encrypted / 未加密
  • (64511, 32) :: encrypted with unsafe vpn solution / 使用非安全 VPN 加密
  • (64511, 33) :: encrypted with safe vpn solution (but no PFS - the usual OpenVPN p2p configuration falls in this category) / 使用安全的 VPN 解决方案加密(但没有 PFS - 常规的 OpenVPN p2p 配置属于此类)
  • (64511, 34) :: encrypted with safe vpn solution with PFS (Perfect Forward Secrecy) / 使用安全的 VPN 解决方案和 PFS(完全前向保密)进行加密
  • (64511, 35) :: physical connection / 物理链路

Local Pref

Our local preference will be calculated by the following formula:

我们的 local preference 将通过下列公式计算:

bgp_local_pref = 10000 + 100 * dn42_bandwidth + 50 * (10-dn42_latency)-200 * bgp_path.len;

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