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Twelve99/AS1299
BGP Communities

Last Updated: 2021-09-20

ENABLING CUSTOMERS TO TAKE CONTROL OF THEIR TRAFFIC FLOWS

Telia Carrier's global IP backbone Twelve99/AS1299, offers a range of BGP Community options to help control the scope of announcements and path selection.

NOTE & DISCLAIMER

- Unless stated otherwise, these features are available for all BGP customers.

- All of these are subject to change; Customers and Peers should check the Portal and the RIPE database entry for AS1299.

These are provided on a best effort basis and not subject to product-specific SLAs.

Visit the RIPE database to see the entry for AS1299

PREPENDS AND DO NOT ANNOUNCE

IP Transit customers can use predefined communities to prepend or deny announcements to specific Telia Carrier peers. Communities are checked at AS1299 exit points, starting with the most specific (i.e. per- peer communities checked before regional communities).

NOTE: Prepend and Do Not Announce community actions are not available for Content Connect customers.

Full list of Predefined Communities

Peer AS Europe North America Asia & Pacific

All Peers in Europe

 

1299:200x

   

All Peers in North America

   

1299:500x

 

All Peers in Asia & Pacific

     

1299:700x

AT&T

AS7018 / AS2686 / AS2687


1299:258x

1299:558x

1299:758x

Lumen (Level3)

AS3356

1299:256x

1299:556x

1299:756x

China Telecom

AS4134

1299:288x

1299:588x

1299:788x

China Unicom

AS4837

1299:287x

1299:587x

1299:787x

Cogent

AS174

1299:273x

1299:573x

 

Comcast

AS7922

 

1299:566x

 

Deutsche Telekom (DTAG)

AS3320

1299:264x

   

Orange

AS5511

1299:254x

1299:554x

1299:754x

GTT

AS3257

1299:269x

1299:569x

1299:769x

Liberty Global (UPC)

AS6830

1299:270x

1299:570x

 

NTT

AS2914

1299:252x

1299:552x

 

PCCW

AS3491 

   

1299:794x 

Sprint

AS1239

1299:250x

1299:550x

 

TATA

AS6453

1299:263x

1299:563x

 

Telecom Italia

AS6762

1299:274x

1299:574x

1299:774x

Telxius (Telefonica)

AS12956

1299:259x

1299:559x

 

Verizon

AS701 / AS702 / AS703

1299:257x

1299:557x

1299:757x

Vodafone

AS1273 

1299:284x 

 

1299:784x 

Zayo (Abovenet)

AS6461

1299:253x

1299:553x

 

* Where x is the number of prepends (x = 0,1,2,3) or do NOT announce (x=9).

Allowable values for the regional & peer prepend are 0, 1, 2 & 3, denoting the number of prepends to be applied. Telia Carrier’s community support also allows customers to set multiple community actions. For example, simultaneously setting a regional prepend of 1x and a peer- specific prepend of 2x. A prepend of zero is also possible.

Origin Communities

Telia Carrier offers origin BGP communities to all IP Transit customers as a standard service feature. Origin communities indicate if a prefix was learned from a customer or a peer, and the region in which it was learned.

Full list of Origin BGP Communities

Community Description 

1299:20000

EU Peers

1299:25000

North American Peers

1299:27000

Asia & Pacific Peers

1299:30000

EU Customers

1299:35000

North American Customers

1299:37000

Asia & Pacific Customers

 

Origin + Communities

Customers can request to have the Origin + feature enabled on their services. This provides City level Origin Communities.

Numbering Structure

Community numbering uses the following structure:

  • 1299:xyzzz
  • Where: 
  • x is BGP Neighbour type; 2 for Peers or 3 for Customers
  • y is Region; 0 for Europe, 5 for North America or 7 for Asia & Pacific
  • zzz is City; see below

Currently available Customer Origin + Communities are listed below:

Europe

Community

Country

IP city prefix

Description

1299:30000

   

Europe

1299:30100

DK

kbn

Copenhagen

1299:30110

SE

got

Gothenburg

1299:30200

SE

s

Stockholm

1299:30210

LT

kau

Kaunas

vls

Vilnius

1299:30220

NO

oso

Oslo

1299:30230

FI

hls

Helsinki

1299:30240

EE

tln

Tallinn

1299:30250

RU

mow

Moscow

1299:30260

RU

sap

St Petersburg

1299:30270

LV

riga

Riga

1299:30300

DE

hbg

Hamburg

1299:30310

DE

bei

Berlin

1299:30320

PL

war

Warsaw

pzn

Poznan

1299:30330

UA

kiev

Kiev

1299:30400

FR

prs

Paris

1299:30410

FR

mei

Marseille

1299:30420

FR

lyon

Lyon

1299:30430

ES

mad

Madrid

1299:30440

ES

bcn

Barcelona

1299:30450

ES

vca

Valencia

1299:30500

NL

adm

Amsterdam

1299:30510

NL

rdm

Rotterdam

1299:30520

BE

brx

Brussels

1299:30600

UK

ldn

London

slou

Slough

1299:30620

IE

dln

Dublin

1299:30700

DE

ffm

Frankfurt

nug

Nürnberg

1299:30710

DE

ddf

Düsseldorf

1299:30720

DE

mcn

Munich

1299:30730

IT

mno

Milan

1299:30740

CH

zch

Zurich

1299:30750

DE

sgrt

Stuttgart

1299:30760

DE

koln

Cologne

1299:30770

IT

rom

Rome

1299:30780

CH

gva

Geneva

1299:30800

AT

win

Vienna

1299:30810

RS

beg

Belgrade

1299:30820

HU

bpt

Budapest

1299:30830

BG

sfia

Sofia

1299:30840

RO

buca

Bucharest

1299:30850

CZ

prag

Prague

1299:30860

SK

brat

Bratislava

1299:30870

HR

zgb

Zagreb

North America

 

Community Country IP city prefix Description
1299:35000     North America
1299:35100 US nyk New York City
1299:35110 US buf Buffalo
1299:35120 CA toro Toronto
1299:35130 US bost Boston
1299:35140 US phm Philadelphia
1299:35150 CA motl Montreal
1299:35200 US sjo San José
palo Palo Alto
saca Santa Clara
1299:35210 US sea Seattle
1299:35220 CA van Vancouver
1299:35230 US port Portland
1299:35240 US salt Salt Lake City
1299:35250 US sac Sacramento
1299:35300 US chi Chicago
1299:35310 US cle Cleveland
1299:35320 US den Denver
1299:35330 US kanc Kansas City
1299:35340 US stlo St Louis
1299:35350 US omha Omaha
1299:35360 US ipls Indianapolis
1299:35370 US det Detroit
1299:35380 US mini Minneapolis
1299:35390 US dem Des Moines
1299:35400 US las/lax Los Angeles
1299:35410 US phx Phoenix
1299:35420 US sdo San Diego
1299:35430 US las Las Vegas
1299:35500 US dls Dallas
1299:35510 US mdc McAllen
1299:35520 US san San Antonio
1299:35530 US aust Austin
1299:35540 US hou Houston
1299:35550 MX qro Queretaro
1299:35560 MX mny Monterrey
1299:35570 US elp El Paso
1299:35580 US lrd Laredo
1299:35600 US ash Ashburn
rest Reston
mans Manassas
1299:35610 US pitt Pittsburgh
1299:35700 US atl Atlanta
1299:35710 US cha Charlotte
1299:35720 US nash Nashville
1299:35800 US mai Miami
1299:35810 US boca Boca Raton
1299:35820 US jax Jacksonville

Asia & Pacific

Community

Country

IP city prefix

Description

1299:37000

   

Asia & Pacific

1299:37100

CN

hnk

Hong Kong

1299:37200

SG

snge

Singapore

1299:37300

JP

tky

Tokyo

1299:37310 JP osa Osaka

 

REMOTE TRIGGERED BLACKHOLE COMMUNITY

The RTBH communities allows customers to tag announced prefixes with a community (see below) that will trigger Telia Carrier to automatically discard (null-route) traffic destined for the tagged prefix as soon as it enters our network. IPv4 and IPv6 prefixes can be tagged up to a /32 or /128, respectively.

While not enabled by default, this capability can be requested when ordering a new service or via a change order for existing services.

RTBH Communities

Community Description 

65535:666

Global RTBH

1299:666

Global RTBH

1299:661

Regional RTBH, discard traffic inside region where announced.

 

LOCAL PREFERENCE ACTIONS

Customers also have the option to change the default local preference setting within AS1299.

Global local-pref Actions

Community Description Local Preference
65535:0 BGP Graceful Shutdown 20
1299:50 Lowest Possible, Backup  50
1299:150 Equal to Peer, Backup 150
Default Equal to Customer 200

 

Regional local-pref Actions

Community Description Local Preference
1299:10050 Set local-pref 50 outside announced continent 50
1299:1y050 Set local-pref 50 in region Y 50
1299:10150 Set local-pref 150 outside announced continent 150
1299:1y150 Set local-pref 150 in region Y 150

By using above communities, local-pref can be decreased when redistributed between regions within AS1299. The route keeps the original global local-pref inside the region where announced.

Where y is Region; 2 for Europe, 5 for North America, 7 for Asia & Pacific. 

Note: It’s not possible to increase local-pref, only decrease. Can be combined with global local-pref actions above.

BGP GRACEFUL SHUTDOWN

AS1299 accepts and honors the BGP Graceful Shutdown community; 65535:0 - compliant with IETF RFC8326. The purpose of this is to reduce the amount of traffic lost when BGP sessions are to be shut down, for example, during planned work. When announced by a customer, AS1299 will set local-preference to 20, which will ensure the use of alternative paths, if they exist. During Planned Works, AS1299 will always signal this community to customers and peers, allowing them to also re-route within their network.

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