Customer tagable Community Attribute Values

Cable & Wireless allows customers to control certain traffic flows off-net with the implementation of community attribute values that prepend route/prefix paths with additional AS hops. These community attribute values, which the customer applies, affects the way C&W peers choose the degree of preference of a given prefix/route, because the number of AS hops within the route-path has been lengthened.

The format for the second component of customer route community number (after 1273:) is set at five digits. This fixed length allows regular expressions to be used in applying a defined number of prepends to a given route/prefix path. This format is 1273:3PPPN, where the fields are coded in the following way. (Note: The first digit of the second component is always "3" then followed by variables of the "PPP" and "N" variables which are defined in the following tables.)

The "PPP" variable cross references off-net connections of C&W (please note that some of these are v6 only), defined in the following tables. (Note, this will always be a three digit value.)

• Peer PPP codes: (PPP values 010-200)

  PPP Code	Peer Name	Peer AS Number
  200	MCI Europe	AS702/AS12702
  199	Global Crossing	AS3549
  198	SWIPNET	AS1257
  197	Tiscali	AS3257
  196	Telia	AS1299
  195	France Telecom	AS5511
  194	Swisscom	AS3303
  193	COLT	AS8220
  192	Eircom	AS5466
  191	Abovenet	AS6461
  190	DTAG	AS3320
  189	Arcor Mannesmann	AS3209
  188	AT&T EMEA	AS2686
  187	DFN	AS680
  185	Globix	AS4513
  184	Thus	AS2529
  178	Telefonica	AS12956
  177	Microsoft EU	AS8068
  176	TATA/Teleglobe	AS6453
  175	Reach	AS4637
  174	KPN Eurorings	AS286
  173	BBC	AS2818
  172	BT	AS5400
  171	Bredband	AS8642
  170	KDDI	AS2516
  169	MANDA	AS8365
  168	AUCS/Infonet	AS3300
  167	UPC Distribution Services	AS6830
  164	Verio	AS2914
  163	LINX	AS5459
  162	Net Access	AS8001
  161	Telecom Italia Sparkle	AS6762
  160	Interroute	AS8928
  159	R-KOM Regensburger Telekommunikation	AS12611
  158	Cogent	AS174
  156	Hurricane Electric	AS6939
  154	PCCW/BtN	AS3491
  151	Akamai Technologies	AS20940
  150	Google	AS15169
  148	Sara	AS1126
  147	Giganews	AS30094
  146	Virgin Radio	AS34763
  145	Pipex	AS5413
  143	Chinese Education and Research network - CERNET2	AS23911
  142	ASnet	AS9264
  141	ARIN	AS10745
  140	APNIC	AS18366
  139	Titan Networks	AS20640
  138	Orange FT Group	AS12479
  137	CBS	AS6102
  135	VeriSign Global Registry Services	AS36628
  134	CRNC	AS29838
  133	Beanfield	AS21949
  132	BBC RD	AS31459
  131	Init7	AS13030
  130	Brazil Telecom	AS8167
  129	RIPE NCC DNS Services	AS25152
  128	Singapore Telecommunications	AS7473
  127	L-ROOT DNS	AS20144
  126	UKSolution	AS20547
  124	ClaraNET	AS8426
  123	OCCAID2	AS30071
  122	TDC	AS3292
  120	TWCable	AS7843
  119	Comcast	AS7922
  118	WBS Connect	AS19080
  117	Websense	AS7598/AS35788/AS44444
  116	Internode	AS4739
  114	Covad	AS18566
  115	Highwinds	AS12989
  101	Rackspace.com	AS36248
  100	Verisign	AS36619
  098	Datapipe	AS14492
  097	ISPRIME	AS23393
  096	Primus Canada	AS6407
  094	HopOne	AS14361
  092	nLayer	AS4436
  091	Webair	AS27257
  090	Ezzi.net	AS15149
  089	Tellurian	AS10848
  088	DALnet	AS31800
  087	New York Internet	AS11403
  086	Microsoft US	AS8075
  083	AT&T US	AS7132
  082	RCN	AS6079
  081	Yahoo	AS10310
  080	PCH	AS42
  079	PCH	AS3856
  078	Cox	AS22773
  077	Akamai Technologies	AS12222
  076	Rogers Cable	AS812
  074	MTS-Allstream Inc	AS15290
  073	Group Telecom	AS6539
  070	Shaw Cablesystems/Big Pipe Inc.	AS6327
  069	Thorn Communications	AS12124
  068	Limelight Networks	AS22822/AS38621
  067	Stealth Communications	AS8002
  066	TMT Warner	AS4323
  065	TDS	AS4181
  063	Terremark	AS23148
  062	Prolexic	AS32787
  061	AARNet	AS7575
  060	Mzima	AS25973
  059	Peer1	AS13768
  058	Atlantech Online	AS7784
  057	Megapath	AS4565
  056	NTELOS	AS7795
  055	Electric Lightwave	AS5650
  054	ESnet	AS293
  053	IIJ	AS2497
  052	TWGATE	AS9505
  051	China Telecom	AS4134
  050	Doubleclick	AS6432
  049	McLeod USA	AS7228
  048	Earthlink	AS4355
  047	Electronic Arts	AS14891
  046	Carpathiahost	AS29748
  045	Edge Networks	AS19029
  044	GNAP	AS1784
  043	Real Connect	AS16559
  041	Walmart	AS17374
  040	Comsat International	AS7908
  039	Cable Vision	AS6128
  038	Servercentral	AS23352
  037	WV Fiber	AS19151
  036	VOXEL	AS29791
  035	Choopa	AS20473
  034	US LEC	AS1785
  033	XAND.com	AS11383
  032	XEEX	AS27524
  031	ISPNETINC	AS22691
  030	NJIIX.NET	AS19318
  029	Verisign	AS36621
  028	Cachefly	AS30081
  027	Trade The News	AS19128
  026	DreamTank	AS26067
  025	Exobit Networks	AS30653
  024	Public Interest Network Services Inc.	AS7902
  023	InterNAP	AS22212
  022	NASA	AS297
  021	Equinix Singapore	AS9989
  020	Facebook	AS32934
  019	AT&T ASPAC	AS2687
  018	Microsoft ASPAC	AS8074
  017	AlphaRed	AS19166
  016	Biznet	AS17451

• Global PPP codes: (PPP values 000-009)

  PPP Code	Function
  000	All Peers & Upstreams
  001	All Upstreams
  002	All Peers

• Regional Upstream PPP codes: (PPP values 911 - 919)

  PPP Code	Region
  911	North America
  912	Europe
  913	Asia
  914	Australia
  915	South America

• Regional Peering PPP codes: (PPP values 921 - 929)

  PPP Code	Region
  921	North America
  922	Europe
  923	Asia
  924	Australia
  925	South America

• Peering point PPP codes: (PPP values 970-989)

  PPP Code	Peering Point Name	Peering Point Location
  989	AMSIX	Amsterdam, NL
  988	DECIX	Frankfurt, DE
  986	INXS-MUC	Munich, DE
  985	LINX	London, UK
  984	PARIX	Paris, FR
  977	Equinix	Singapore
  976	HKIX	Hong Kong, CN
  975	NAP of the Americas	Miami, FL, US
  974	Any2	Los Angeles, CA, US
  973	LAIIX	Los Angeles, CA, US
  972	Equinix	Ashburn, VA, US
  971	PAIX NY	New York, NY, US
  970	NYIIX	New York, NY, US

• Upstream PPP codes: (PPP values 990-998)

  PPP Code	Upstream Name	Upstream AS number
  998	Savvis Communications	AS3561
  996	Level 3	AS3356
  995	Reach	AS4637

• The "N" variable cross references the number of prepends, defined in the following table.
  Allowable values of N:

  Value	Effect
  0	Do not announce to selected peer
  1	Prepend 1x to selected peer
  2	Prepend 2x to selected peer
  3	Prepend 3x to selected peer
  9	Announce to this peer only (also announces to customers)

• 1273:32000 - Do not announce to MCI Europe (AS702)
• 1273:31752 - Prepend twice to Reach (AS4637)
• 1273:39963 - Prepend three times to Level 3 Upstream connection (AS3356)

Please note that mixing a 'prepend to IXP' or 'prepend to region' community with a 'prepend to specific peer' or global community may not have the intended effect. Prepending once to LINX and once to BT will lead to the route being prepended once to BT at LINX, whereas prepending an unequal number of times to an IXP and a peer at that IXP will lead to the sum of the prepends being added (e.g. prepending once to LINX and twice to BT will lead to three prepends being sent to BT at LINX). For this reason it is not recommended to mix specific and general prepend communities on the same routes.

For customers that have a host or block under a DDoS, the affected host/block can be advertised to AS1273 with community string 1273:666. This will cause all traffic to that host/block to be black-holed at the core of the AS1273 network.This action will trigger emails sent to the appropriate security and operations groups for notification purposes. After advertising the prefix with 1273:666, the customer may open a ticket to request further assistance with their Cable & Wireless management agency, or open a ticket via email to trouble@eu.cw.net Once the attack has been mitigated, the customer will be responsible for removing the prefix from being advertised. Cable & Wireless will not be held responsible for customers who errantly advertise prefixes with the blackhole community string.