AW: Need BGP route check (UPDATE)

Jürgen Jaritsch JJaritsch at anexia-it.com
Fri May 20 16:17:01 UTC 2016


Hi Matt,

output from lg.he.net:

core1.fmt2.he.net> show ip bgp routes detail 129.77.0.0/16
  Number of BGP Routes matching display condition : 2
       S:SUPPRESSED F:FILTERED s:STALE
1       Prefix: 129.77.0.0/16,  Status: BI,  Age: 1h0m28s
         NEXT_HOP: 216.66.50.106, Metric: 680, Learned from Peer: 216.218.252.148 (6939)
          LOCAL_PREF: 140,  MED: 1,  ORIGIN: igp,  Weight: 0
         AS_PATH: 46887 14607 14607
            COMMUNITIES: 6939:1000 6939:1001 6939:1111
2       Prefix: 129.77.0.0/16,  Status: I,  Age: 1h0m28s
         NEXT_HOP: 216.66.32.6, Metric: 725, Learned from Peer: 216.218.252.212 (6939)
          LOCAL_PREF: 140,  MED: 1,  ORIGIN: igp,  Weight: 0
         AS_PATH: 46887 14607 14607
            COMMUNITIES: 6939:1000 6939:1001 6939:1111
       Last update to IP routing table: 1h0m28s, 1 path(s) installed:
# Entry cached for another 59 seconds.

At least at this stage no special communities are visible but I don't know if HE removes existing communities.


best regards

Jürgen Jaritsch
Head of Network & Infrastructure

ANEXIA Internetdienstleistungs GmbH

Telefon: +43-5-0556-300
Telefax: +43-5-0556-500

E-Mail: JJaritsch at anexia-it.com 
Web: http://www.anexia-it.com 

Anschrift Hauptsitz Klagenfurt: Feldkirchnerstraße 140, 9020 Klagenfurt
Geschäftsführer: Alexander Windbichler
Firmenbuch: FN 289918a | Gerichtsstand: Klagenfurt | UID-Nummer: AT U63216601


-----Ursprüngliche Nachricht-----
Von: NANOG [mailto:nanog-bounces at nanog.org] Im Auftrag von Matthew Huff
Gesendet: Freitag, 20. Mai 2016 18:11
An: Eric Tykwinski
Cc: nanog at nanog.org
Betreff: RE: Need BGP route check (UPDATE)

>From responses I received, I have gotten a number of different answers. Some are seeing our routes from 6128, some from 46887 and a few from both. The response from Eric though was typical. Showing the IPv4 prefix only from AS6128, but the IPv6 from both 6128 & 46887. 

I am guessing that 46887 might be set with a community to not export our IPv4 prefixes except to direct peers? Anyone directly peered with 46887 that could see the community for 129.77.0.0/16 and verify?

----
Matthew Huff             | 1 Manhattanville Rd
Director of Operations   | Purchase, NY 10577
OTA Management LLC       | Phone: 914-460-4039
aim: matthewbhuff        | Fax:   914-694-5669


> -----Original Message-----
> From: Eric Tykwinski [mailto:eric-list at truenet.com]
> Sent: Friday, May 20, 2016 11:48 AM
> To: Matthew Huff <mhuff at ox.com>
> Subject: RE: Need BGP route check
> 
> Matt,
> 
> show ip bgp 129.77.0.0/16
> BGP routing table entry for 129.77.0.0/16, version 161696687
> Paths: (2 available, best #2, table Default-IP-Routing-Table)
>   Advertised to update-groups:
>      1
>   3356 6128 14607
>     4.59.140.65 from 4.59.140.65 (4.69.183.7)
>       Origin IGP, metric 0, localpref 100, valid, external
>   174 6128 14607
>     38.104.114.73 from 38.104.114.73 (154.26.5.244)
>       Origin IGP, metric 105030, localpref 100, valid, external, best
>       Community: 174:21000 174:22013
> 
> show bgp ipv6 unicast 2620:0:2810::/48
> BGP routing table entry for 2620:0:2810::/48, version 18004880
> Paths: (2 available, best #1, table Global-IPv6-Table)
>   Advertised to update-groups:
>      2
>   3356 6128 14607
>     2001:1900:2100::A2D (FE80::219:7FF:FEDD:2800) from
> 2001:1900:2100::A2D
> (4.69.183.7)
>       Origin IGP, metric 0, localpref 100, valid, external, best
>       Community: 3356:3 3356:22 3356:100 3356:123 3356:575 3356:2039
> 6128:3000 6128:3091 6128:4000 6128:5003 6128:5046 64600:4000
> 64600:65002
>   174 46887 14607 14607
>     2001:550:2:4::B:1 (FE80::D66D:50FF:FE5E:1D3) from 2001:550:2:4::B:1
> (154.26.5.244)
>       Origin IGP, metric 105030, localpref 100, valid, external
>       Community: 174:21001 174:22013
> 
> Sincerely,
> 
> Eric Tykwinski
> TrueNet, Inc.
> P: 610-429-8300
> 
> 
> -----Original Message-----
> From: NANOG [mailto:nanog-bounces at nanog.org] On Behalf Of Matthew Huff
> Sent: Friday, May 20, 2016 11:32 AM
> To: nanog at nanog.org
> Subject: Need BGP route check
> 
> One of our upstreams is apparently having problems, although they don't
> appear to know about it. I've seen an alert at BGPmon.net about our
> prefixes
> being withdrawn, and I can't locate our prefixes through that provider
> on
> any routeviews. Can someone check to see what ASPATHS you are seeing
> for our
> prefixes?
> 
> 129.77.0.0/16
> 2620:0:2810::/48
> 
> We should be advertised via AS6128 and AS46887
> 
> ----
> Matthew Huff             | 1 Manhattanville Rd Director of
> Operations   |
> Purchase, NY 10577 OTA Management LLC       | Phone: 914-460-4039
> aim: matthewbhuff        | Fax:   914-694-5669
> 
> 
> 



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