Updated for NGI on September 2021.

Internet2 External Traffic Influencing Communities

 

International, NREN, and FEDNET peers may set these communities to change the local-preference Internet2 will set on a route:

• Default - local-pref 500
• 11537:40 - Low (local-pref 460)
• 11537:160 - High (local-pref 560)

Internet2 Participants/Connectors may set these communities to change the local-preference Internet2 will set on a route:

• Default - local-pref 600
• 11537:140 - Low (local-pref 540)
• 11537:260 - High (local-pref 620)

 

Internet2 Peers may send the following communities:

• 11537:2002 - Block prefix to commercial R&E peers.

Internet2 International (ITN) peers may send the below communities for path prepending:

• 65001:65000 - prepend x1
• 65002:65000 - prepend x2 
• 65003:65000 - prepend x3 

 

The following community combination of <CODE>:<ASN> allows you to block or prepend prefixes sent to individual international (ITN) peers.  This is in the process of being deployed, once a peer has had the necessary configuration added, their ASN will be added here.

• Codes:
• 65000     - prefixes will not be sent to ITN peer’s ASN
• 65001     - prefixes will be prepended 1 time to ITN peer’s ASN
• 65002     - prefixes will be prepended 2 times to ITN peer’s ASN
• 65003     - prefixes will be prepended 3 time2 to ITN peer’s ASN
• 65012     - prefixes will only be sent to ITN peer's ASN

• ITN Peer ASN:
  
  • 2603     - NORDUnet
  • 20965     - GEANT

 

 

Internet2 Internal Traffic Influencing Communities

 

Internet2-connected Gigapops and connectors with heterogeneous participants (i.e. not all are universities) may need to use these communities to help them pass prefixes appropriately to their participants.  For example, connectors can pass all prefixes on to their university participants, but should not pass commercial or US Fednet prefixes to their commercial or Fednet participants. 

• 11537:888 - Block to external (Internet2 uses this community to mark prefixes that will not be reannounced to external peers).
• 11537:902 - non-I2 R&E sites sponsored for connection by members.
• 11537:910 - sponsored educational groups (Primary state networks).
• 11537:950 - Internet2 Participants.
• 11537:2000 - Commercial research - Lab participant.
• 11537:2001 - Special Commercial prefix used for V6 or multicast.
• 11537:2500 - Block advertisement to international.
• 11537:2501 - International.
• 11537:3000 - FEDNET (US Federal Peer Network).
• 11537:3500 - Connector Only (Internet2 uses this to mark prefixes sent to connectors but not peers).
• 11537:4000 - RHCPP (Rural Health Network Groups).
• 11537:6001 - LHCOne Connectors.
• 11537:6002 - LHCOne Peers
• 11537:911 - Remote Triggered Black Hole (RTBH).  Traffic to prefixes tagged for RTBH will be discarded.
• 65535:666 - Remote Triggered Black Hole (RTBH).  Traffic to prefixes tagged for RTBH will be discarded.

NET+ BGP Communities

While most of Internet2's settlement-free peering with commercial networks is done using I2PX/AS11164, for historical reasons there are still several commercial networks that are part of Internet2's NET+ Cloud program that are peering with Internet2's Research & Education network/AS11537.  Internet2 plans to consolidate all commercial peers into AS11164 during 2024.

Internet2 has implemented a set of BGP communities that, along with your own local BGP import policy, will allow you to control your traffic path to/from the Internet2 NET+ peer networks. All of these communities are specific to individual peer networks and do not affect routing to/from the other peer networks.

• 11537:5000 - Internet2 NET+ Services.
• 11537:5002 - Cloud.
• 11537:5003 - SIP
• 11537:5004 - Amazon
• 11537:5007 - Code42
• 11537:5013 - ServiceNow
• 11537:5015 - DropBox
• 11537:5016 - Oracle
• 11537:5017 - Zoom
• 11537:5500 - Block to NET+ (Internet2 uses this to mark prefixes that will not be sent to NET+ peers).

The following community combination of <CODE>:<ASN> allows you to block or prepend prefixes sent to individual NET+ peers.

• Codes:
  • 65000:<ASN>     - prefixes will not be sent to NET+ peer with ASN
  • 65001:<ASN>     - prefixes will be prepended 1 time to NET+ peer with ASN
  • 65002:<ASN>     - prefixes will be prepended 2 times to NET+ peer with ASN
  • 65003:<ASN>     - prefixes will be prepended 3 time2 to NET+ peer with ASN

• NET+ peer ASN’s
  • 16509     - Amazon
  • 62715     - Code42
  • 16839     - ServiceNow
  • 19679     - DropBox
  • 7160       - Oracle
  • 30103     - Zoom

BLENDED VRF (AS396955) Communities:

• 396955:9000 - Customer Routes
  

 

 

 

Internet2 Prefix Advertisement Matrix

	Non-International Peers	International Peers	Connectors	Commercial Participants	Internet2 NET+
Federal Peer Network	NO	NO	YES	YES	YES
Sponsored Participant	YES	YES	YES	YES	YES
Sponsored Education Group Participant	YES	YES	YES	YES	YES
Network Participant	YES	YES	YES	YES	YES
Commercial Participant	YES	YES	YES	NO	NO
Connector Only	NO	NO	YES	NO	YES
Internet2 Net+	NO	NO	YES	NO	NO

YES indicates prefixes from the network class in that row are sent to the network class in that column.