Need BGP route check

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1

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 I've seen an alert at BGPmon.net about our prefixes being withdrawn, and I can't locate our prefixes through that provider on any routeviews.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

2

Hi Matt,

NYC:

show route 129.77.0.0/16

                      AS path: 6939 46887 14607 14607 I, validation-state: unverified
                      AS path: 1299 6939 6939 46887 14607 14607 I, validation-state: unverified

show route 2620:0:2810::/48

                      AS path: 6939 6128 14607 I, validation-state: unverified
                      AS path: 1299 3356 6128 14607 I, validation-state: unverified

LAX:
#sh ip bgp 129.77.0.0/16
  6939 46887 14607 14607
  1299 6939 6939 46887 14607 14607

#sh ip bgp ipv6 uni 2620:0:2810::/48
  6939 6128 14607
  1299 3356 6128 14607

Hong Kong:
#sh ip bgp 129.77.0.0/16
  10026 6939 46887 14607 14607
  3491 6128 14607

#sh ip bgp ipv6 uni 2620:0:2810::/48
  3491 6128 14607

Frankfurt:

show route 129.77.0.0/16

                      AS path: 6939 46887 14607 14607 I, validation-state: unverified
                      AS path: 3356 6128 14607 I, validation-state: unverified
                      AS path: 3320 3356 6128 14607 I, validation-state: unverified
                      AS path: 1299 6939 6939 46887 14607 14607 I, validation-state: unverified

show route 2620:0:2810::/48

                      AS path: 6939 6128 14607 I, validation-state: unverified
                      AS path: 3356 6128 14607 I, validation-state: unverified
                      AS path: 1299 6939 6128 14607 I, validation-state: unverified
                      AS path: 3320 6939 6128 14607 I, validation-state: unverified

best regards

Jürgen Jaritsch
Head of Network & Infrastructure

ANEXIA Internetdienstleistungs GmbH

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

E-Mail: JJaritsch@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

3

Here you are with our point of view (Italy - AS200873)

BGP routing table entry for 129.77.0.0/16, version 147288840
Paths: (1 available, best #1, table default)
  Advertised to update-groups:
     3
  28716 6939 46887 14607 14607, (received & used)

as you can see we receive it as generated by AS14607 with prepend.

BR

G. Spano'

Giuseppe Spanò

Datacast S.r.l. - Consulenze e servizi tecnici
V.le Brigate Partigiane 12/15
16129 Genova

T. +39 346 6693932
spano@datacast.it

4

Hello, here ya go.

Routes:
     Destination Peer Next-Hop LPref Weight MED
      AS-Path

5

Thanks, but I had checked a number of public looking glasses and only one had the 46887 path (HE.net), wanted a more global check. A number of responses are seeing only one or the other paths. The 14607 pre-pend is due to depref'ing 46887 earlier today when we had the instability.

6

Just to note, the route-views4 collector has a pretty diverse set
of global multi-hop views. telnet://route-views4.routeviews.org/

http://www.routeviews.org/peers/peering-status.html
http://www.routeviews.org/peers/route-views4.routeviews.org.txt

John Kemp