Re: [Idr] I-D Action: draft-ietf-idr-deprecate-as-set-confed-set-02.txt

"Hannachi, Lilia (IntlAssoc)" <lilia.hannachi@nist.gov> Tue, 12 November 2019 21:41 UTC

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From: "Hannachi, Lilia (IntlAssoc)" <lilia.hannachi@nist.gov>
To: Jeffrey Haas <jhaas@pfrc.org>, "alejandroacostaalamo@gmail.com" <alejandroacostaalamo@gmail.com>
CC: Sander Steffann <sander@steffann.nl>, "idr@ietf.org" <idr@ietf.org>, Warren Kumari <warren@kumari.net>, "Sriram, Kotikalapudi (Fed)" <kotikalapudi.sriram@nist.gov>
Thread-Topic: [Idr] I-D Action: draft-ietf-idr-deprecate-as-set-confed-set-02.txt
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Date: Tue, 12 Nov 2019 21:41:03 +0000
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Archived-At: <https://mailarchive.ietf.org/arch/msg/idr/Jsgw0JZkWcIkJp7mMjB6veDnHp4>
Subject: Re: [Idr] I-D Action: draft-ietf-idr-deprecate-as-set-confed-set-02.txt
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Jeff,

>
> In IPv6, we shouldn't have any motivation to do aggregation in the
> traditional sense.  Have you done any analysis of the prefixes involved in
> that IPv6 aggregation?
>

Earlier we (NIST) had shared the analysis for IPv4.
Listed below is the AS_SET analysis for IPv6.
Please let me know if you have any further questions.

Lilia
--------------

AS_SET ANALYSIS (OREGON6 2019-10-03:00)
The Routeviews OREGON6 collector peers with (23) ASes

*********************************************************************
Summary (for IPv6)
*********************************************************************

        Total # Updates : 155659
        # Updates with AS_SET : 38
        Percentage of routes with AS_SET : 0.024%
        # Total # ASes (globally) : 18027
        # ASes that create updates with AS_SET : 27
        Percentage of ASes that create updates with AS_SET : 0.15%

        # Routes with AS_SET (after eliminating AS path redundancy): 38
        Explanation: These are routes with unique {prefix, AS_SET, 1st AS after AS_SET, AGGREGATOR} combinations.

Out of the 38 routes with AS_SETs:
        *** Routes with AS_SET that seem meaningless or malformed ***
        # Routes with only one AS in AS_SET : 26
        # Routes with Reserved ASN in AS_SET : 0
        # Routes with common AS in the AS_SEQUENCE and AS_SET : 4
        # Routes with repeated ASes in the AS_SET : 0
        # Routes that are /48 prefix (aggregate) announcements : 6
        Total # Routes that seem meaningless or malformed : 27

      Total # Routes that seem meaningful : 11

        Distribution of # unique ASes in the AS_SET : 1:26,2:7,3:1,4:3,8:1

        # Routes with AS_SET where AGGREGATOR does not match the right most AS in AS_SEQUENCE : 1

        # Routes with unique {prefix, AS_SET, AGGREGATOR} : 38
        # Routes with unique {prefix, AS_SET} : 38

*** When there is AGGREGATOR without AS_SET ***
        # Unique prefixes (with or without AS_SET) : 78625
        # Unique prefixes without AS_SET but with AGGREGATOR: 8651
        % Unique prefixes without AS_SET but with AGGREGATOR: 11.003%
        # Unique prefixes with ATOMIC_AGGREGATE: 3823
        # Unique prefixes with AGGREGATOR and ATOMIC_AGGREGATE: 3650
        # Unique prefixes with AGGREGATOR and without ATOMIC_AGGREGATE: 5039
        # Unique prefixes with AS_SET and ATOMIC_AGGREGATE: 2


*********************************************************************
List of ASes (AGGREGATOR) Ranked according to # Routes with AS_SET
*********************************************************************

        AS: 14080    # Routes with AS_SET: 4    Organization: Telmex Colombia S.A., CO
        AS: 271    # Routes with AS_SET: 3    Organization: BCNET-AS - BCnet, CA
        AS: 20940    # Routes with AS_SET: 3    Organization: AKAMAI-ASN1, US
        AS: 9443    # Routes with AS_SET: 2    Organization: INTERNETPRIMUS-AS-AP Primus Telecommunications, AU
        AS: 24158    # Routes with AS_SET: 2    Organization: TAIWANMOBILE-AS Taiwan Mobile Co., Ltd., TW
        AS: 45147    # Routes with AS_SET: 2    Organization: NAPINFO-TRANSIT-AS-AP PT. NAP Info Lintas Nusa, ID
        AS: 52320    # Routes with AS_SET: 2    Organization: GlobeNet Cabos Submarinos Colombia, S.A.S., CO
        AS: 22    # Routes with AS_SET: 1    Organization: DNIC-AS-00022 - Navy Network Information Center (NNIC), US
        AS: 8376    # Routes with AS_SET: 1    Organization: Jordan Data Communications, JO
        AS: 8697    # Routes with AS_SET: 1    Organization: JTC-AS8697 Jordan Telecom Group ( JTG ), JO
        AS: 47377    # Routes with AS_SET: 1    Organization: ORANGE_BELGIUM_SA KPN Belgium Business NV has been acquired by Mobistar, BE
        AS: 65401    # Routes with AS_SET: 1    Organization: -Private Use AS-, ZZ
        AS: 7160    # Routes with AS_SET: 1    Organization: NETDYNAMICS - Oracle Corporation, US
        AS: 6509    # Routes with AS_SET: 1    Organization: CANARIE-NTN - Canarie Inc, CA
        AS: 32440    # Routes with AS_SET: 1    Organization: LONI - Louisiana Board of Regents/Louisiana Optical Network Initiative (LONI), US
        AS: 6364    # Routes with AS_SET: 1    Organization: ATLANTIC-NET-1 - Atlantic.net, Inc., US
        AS: 27919    # Routes with AS_SET: 1    Organization: IXP ECUADOR, EC
        AS: 8664    # Routes with AS_SET: 1    Organization: ICM-PUB public network services, PL
        AS: 41943    # Routes with AS_SET: 1    Organization: VMI-KISTA, SE
        AS: 41426    # Routes with AS_SET: 1    Organization: SAUDIDATASTC-AS, SA
        AS: 203507    # Routes with AS_SET: 1    Organization: AVIRADE Kaplaneiweg 1, DE
        AS: 44814    # Routes with AS_SET: 1    Organization: BTEL-BG-AS, BG
        AS: 35548    # Routes with AS_SET: 1    Organization: SMARTTERRA-AS, DE
        AS: 62917    # Routes with AS_SET: 1    Organization: GIGABITCO - Gigabit Communications, US
        AS: 34056    # Routes with AS_SET: 1    Organization: KIEVNET KievNet ISP AS, UA
        AS: 9924    # Routes with AS_SET: 1    Organization: TFN-TW Taiwan Fixed Network, Telco and Network Service Provider., TW
        AS: 26281    # Routes with AS_SET: 1    Organization: RIML-CORP-AS-1 - BlackBerry Limited, CA


*********************************************************************
List of Routes with AS_SET that seem meaningless or malformed:
*********************************************************************

        2607:ffc0:1000::/36     209 6939 18705 26281 {13340}
        2607:f170:50::/44       57463 6939 2828 18672 6364 {6364}
        2001:6a0::/32   7018 6939 8664 {8890}
        2607:f8f0:210::/44      57866 1299 6939 271 271 271 271 {26415}
        2800:484::/32   57463 6939 3257 14080 {10620}
        2a01:4a40::/32  37100 44814 {60974}
        2402:7500:600::/40      57463 6939 3491 9924 24158 {131614}
        2800:480::/32   57463 6939 3257 14080 {10620}
        2a03:f600::/32  57463 6939 1299 3301 25146 41943 {34236}
        2a00:1688::/32  57866 9002 34056 {201948}
        2600:1408:9800::/48     209 6461 20940 20940 {16625}
        2a02:26f0:e00::/48      57463 6939 6762 20940 20940 {21342}
        2403:4800:9000::/36     57463 6939 4826 9443 {16625}
        2600:140b:f000::/48     7018 1299 4637 4637 4637 4637 20940 20940 {21342}
        2606:b400:8814::/48     57463 6939 3356 7160 {7160}
        2403:4800::/48  57463 6939 4826 9443 {38285}
        2a00:18d8::/32  57463 6939 5511 8697 {328126}
        2803:a8a0::/32  7660 2516 6762 27947 27919 {27919,266802}
        2800:485::/32   57463 6939 3257 14080 {10620}
        2402:4640::/33  22652 4788 38044 {23736}
        2402:7500:800::/40      57463 6939 3491 9924 24158 {131614}
        2a01:9700::/32  57463 6939 8697 8376 {8376}
        2a06:e380::/29  57866 1299 203507 203507 {206970}
        2a00:6480::/32  57463 6939 35548 {29018}
        2001:480:10::/48        57866 2914 668 22 {7224}
        2a02:2578::/32  3277 6939 1299 39386 41426 {51375}
        2a01:cc00::/32  57463 6939 5511 47377 {12493}


*********************************************************************
List of Routes with AS_SET that seem meaningful:
*********************************************************************

        2404:c000::/32  1403 6939 7473 45147 {16625,17727,55818,64313}
        2001:410::/32   3277 6939 6509 {271,7860,8111}
        2800:b40::/32   57463 52320 {6939,18678,262220,262589}
        2402:7500::/32  57463 6939 2914 9924 9924 9924 {24158,131614}
        2404:c000::/33  7018 1299 45147 {16625,55818}
        2607:f8f0::/32  57866 1299 577 271 271 271 271 {4476,16462,26415,393249}
        2604:82c0::/32  57463 6939 33132 62917 {32451,54426}
        2800:482::/32   40191 3257 14080 {10620,64250}
        2803:6700::/32  31019 43531 52320 {2,3257,6762,6939,18747,19429,262220,263210}
        2607:f390::/32  57463 6939 3356 32440 {2055,17244}
        2607:f8f0:600::/40      57866 1299 577 271 271 271 271 {4476,393249}

*********************************************************************
List of All Routes with AS_SET by AGGREGATOR
*********************************************************************

***********************
AGGREGATOR= 14080
***********************
        2800:482::/32   40191 3257 14080 {10620,64250}  AGGREGATOR=14080
        2800:484::/32   57463 6939 3257 14080 {10620}   AGGREGATOR=14080
        2800:480::/32   57463 6939 3257 14080 {10620}   AGGREGATOR=14080
        2800:485::/32   57463 6939 3257 14080 {10620}   AGGREGATOR=14080
***********************
AGGREGATOR= 271
***********************
        2607:f8f0:210::/44      57866 1299 6939 271 271 271 271 {26415} AGGREGATOR=271
        2607:f8f0:600::/40      57866 1299 577 271 271 271 271 {4476,393249}    AGGREGATOR=271
        2607:f8f0::/32  57866 1299 577 271 271 271 271 {4476,16462,26415,393249}        AGGREGATOR=271
***********************
AGGREGATOR= 20940
***********************
        2600:1408:9800::/48     209 6461 20940 20940 {16625}    AGGREGATOR=20940
        2600:140b:f000::/48     7018 1299 4637 4637 4637 4637 20940 20940 {21342}       AGGREGATOR=20940
        2a02:26f0:e00::/48      57463 6939 6762 20940 20940 {21342}     AGGREGATOR=20940
***********************
AGGREGATOR= 9443
***********************
        2403:4800::/48  57463 6939 4826 9443 {38285}    AGGREGATOR=9443
        2403:4800:9000::/36     57463 6939 4826 9443 {16625}    AGGREGATOR=9443
***********************
AGGREGATOR= 24158
***********************
        2402:7500:600::/40      57463 6939 3491 9924 24158 {131614}     AGGREGATOR=24158
        2402:7500:800::/40      57463 6939 3491 9924 24158 {131614}     AGGREGATOR=24158
***********************
AGGREGATOR= 45147
***********************
        2404:c000::/33  7018 1299 45147 {16625,55818}   AGGREGATOR=45147
        2404:c000::/32  1403 6939 7473 45147 {16625,17727,55818,64313}  AGGREGATOR=45147
***********************
AGGREGATOR= 52320
***********************
        2803:6700::/32  31019 43531 52320 {2,3257,6762,6939,18747,19429,262220,263210}  AGGREGATOR=52320
        2800:b40::/32   57463 52320 {6939,18678,262220,262589}  AGGREGATOR=52320
***********************
AGGREGATOR= 22
***********************
        2001:480:10::/48        57866 2914 668 22 {7224}        AGGREGATOR=22
***********************
AGGREGATOR= 8376
***********************
        2a01:9700::/32  57463 6939 8697 8376 {8376}     AGGREGATOR=8376
***********************
AGGREGATOR= 8697
***********************
        2a00:18d8::/32  57463 6939 5511 8697 {328126}   AGGREGATOR=8697
***********************
AGGREGATOR= 47377
***********************
        2a01:cc00::/32  57463 6939 5511 47377 {12493}   AGGREGATOR=47377
***********************
AGGREGATOR= 65401
***********************
        2402:4640::/33  22652 4788 38044 {23736}        AGGREGATOR=65401
***********************
AGGREGATOR= 7160
***********************
        2606:b400:8814::/48     57463 6939 3356 7160 {7160}     AGGREGATOR=7160
***********************
AGGREGATOR= 6509
***********************
        2001:410::/32   3277 6939 6509 {271,7860,8111}  AGGREGATOR=6509
***********************
AGGREGATOR= 32440
***********************
        2607:f390::/32  57463 6939 3356 32440 {2055,17244}      AGGREGATOR=32440
***********************
AGGREGATOR= 6364
***********************
        2607:f170:50::/44       57463 6939 2828 18672 6364 {6364}       AGGREGATOR=6364
***********************
AGGREGATOR= 27919
***********************
        2803:a8a0::/32  7660 2516 6762 27947 27919 {27919,266802}       AGGREGATOR=27919
***********************
AGGREGATOR= 8664
***********************
        2001:6a0::/32   7018 6939 8664 {8890}   AGGREGATOR=8664
***********************
AGGREGATOR= 41943
***********************
        2a03:f600::/32  57463 6939 1299 3301 25146 41943 {34236}        AGGREGATOR=41943
***********************
AGGREGATOR= 41426
***********************
        2a02:2578::/32  3277 6939 1299 39386 41426 {51375}      AGGREGATOR=41426
***********************
AGGREGATOR= 203507
***********************
        2a06:e380::/29  57866 1299 203507 203507 {206970}       AGGREGATOR=203507
***********************
AGGREGATOR= 44814
***********************
        2a01:4a40::/32  37100 44814 {60974}     AGGREGATOR=44814
***********************
AGGREGATOR= 35548
***********************
        2a00:6480::/32  57463 6939 35548 {29018}        AGGREGATOR=35548
***********************
AGGREGATOR= 62917
***********************
        2604:82c0::/32  57463 6939 33132 62917 {32451,54426}    AGGREGATOR=62917
***********************
AGGREGATOR= 34056
***********************
        2a00:1688::/32  57866 9002 34056 {201948}       AGGREGATOR=34056
***********************
AGGREGATOR= 9924
***********************
        2402:7500::/32  57463 6939 2914 9924 9924 9924 {24158,131614}   AGGREGATOR=9924
***********************
AGGREGATOR= 26281
***********************
        2607:ffc0:1000::/36     209 6939 18705 26281 {13340}    AGGREGATOR=26281