[bdNOG] Extra peer entries in HE BGP Info for our AS38592.
Aniruddha Barua
aniruddha.barua at colbd.com
Wed Nov 23 13:31:37 BDT 2016
Dear All,
Seems to be BGP configuration issue (misconfiguration or experiment???) at both ConnectBD and X-Press Technologies as seen from PCH Looking Glass "show ip bgp neighbor <IP_addr>" outputs below (please note the lines beginning with arrow (=>)).
=> BGP neighbor is 198.32.167.29, remote AS 24481, local AS 3856, external link
Description: Connect BD Ltd.
Member of peer-group NON-ROUTE-SERVER-PEER for session parameters
BGP version 4, remote router ID 202.79.23.248
BGP state = Established, up for 3d20h26m
Last read 00:00:21, hold time is 180, keepalive interval is 60 seconds
Neighbor capabilities:
4 Byte AS: advertised and received
Route refresh: advertised and received(new)
Address family IPv4 Unicast: advertised and received
Message statistics:
Inq depth is 0
Outq depth is 0
Sent Rcvd
Opens: 16 7
Notifications: 14 0
Updates: 16 132533
Keepalives: 223481 255334
Route Refresh: 0 0
Capability: 0 0
Total: 223527 387874
Minimum time between advertisement runs is 30 seconds
For address family: IPv4 Unicast
NON-ROUTE-SERVER-PEER peer-group member
Community attribute sent to this neighbor(both)
Inbound path policy configured
Outbound path policy configured
Route map for incoming advertisements is *NON-ROUTE-SERVER-PEER-IN
Route map for outgoing advertisements is *NON-ROUTE-SERVER-PEER-OUT
=> 2499 accepted prefixes
Connections established 16; dropped 15
Last reset 3d20h26m, due to BGP Notification send
Local host: 198.32.167.3, Local port: 40857
Foreign host: 198.32.167.29, Foreign port: 179
Nexthop: 198.32.167.3
Nexthop global: ::
Nexthop local: ::
BGP connection: non shared network
Read thread: on Write thread: off
=> BGP neighbor is 198.32.167.108, remote AS 133854, local AS 3856, external link
Description: X-press Technologies Limited (ahsan at x-press.technology) (#71717)
Member of peer-group NON-ROUTE-SERVER-PEER for session parameters
BGP version 4, remote router ID 198.32.167.108
BGP state = Established, up for 3d20h34m
Last read 00:00:13, hold time is 180, keepalive interval is 60 seconds
Neighbor capabilities:
4 Byte AS: advertised and received
Route refresh: advertised and received(new)
Address family IPv4 Unicast: advertised and received
Message statistics:
Inq depth is 0
Outq depth is 0
Sent Rcvd
Opens: 20 10
Notifications: 15 1
Updates: 20 160311
Keepalives: 223025 254825
Route Refresh: 0 0
Capability: 0 0
Total: 223080 415147
Minimum time between advertisement runs is 30 seconds
For address family: IPv4 Unicast
NON-ROUTE-SERVER-PEER peer-group member
Community attribute sent to this neighbor(both)
Inbound path policy configured
Outbound path policy configured
Route map for incoming advertisements is *NON-ROUTE-SERVER-PEER-IN
Route map for outgoing advertisements is *NON-ROUTE-SERVER-PEER-OUT
=> 2582 accepted prefixes
Connections established 20; dropped 19
Last reset 3d20h34m, due to BGP Notification send
Local host: 198.32.167.3, Local port: 43119
Foreign host: 198.32.167.108, Foreign port: 179
Nexthop: 198.32.167.3
Nexthop global: ::
Nexthop local: ::
BGP connection: non shared network
Read thread: on Write thread: offBest regards,
ANIRUDDHA BARUA
Email: aniruddha.barua at colbd.com, cto at colbd.com
---------- Original Message -----------
From: "Aniruddha Barua" <aniruddha.barua at colbd.com>
To: Fakrul Alam <fakrul at fakrul.com>, Omar Ali <omarali113 at gmail.com>
Cc: Simon Sohel Baroi / Global Business / 01847102243 / <simon.baroi at fiberathome.net>, nog <nog at bdnog.org>
Sent: Tue, 22 Nov 2016 14:04:10 +0600
Subject: Re: [bdNOG] Extra peer entries in HE BGP Info for our AS38592.
> Dear Pappu bhai,
>
> Found the following output from PCH looking glass.
>
> BGP routing table entry for
202.65.168.0/24
Paths: (4 available, best #1, table
Default-IP-Routing-Table)
Advertised to non peer-group
peers:
206.220.231.55
38592
198.32.167.99 from 198.32.167.5
(198.32.167.5)
Origin IGP, metric 0, localpref 100, valid,
external,
best
Community:
3856:52900
Last update: Mon Nov 21 23:00:53
2016
65534
38592
198.32.167.99 from 198.32.167.1
(198.32.167.1)
Origin IGP, metric 0, localpref 100, valid,
external
Community:
3856:52900
Last update: Mon Nov 21 23:01:04
2016
133854
38592
198.32.167.99 from 198.32.167.108
(198.32.167.108)
Origin IGP, metric 0, localpref 100, valid,
external
Community:
3856:52900
Last update: Mon Nov 21 23:00:53
2016
24481
38592
198.32.167.99 from 198.32.167.29
(202.79.23.248)
Origin IGP, metric 0, localpref 100, valid,
external
Community:
3856:52900
Last update: Mon Nov 21 23:00:53
2016No idea why the bottom two are here. Someone from ConnectBD and X-Press Technologies might be able to explain or might want to contact me off the list.
>
> Best regards,
>
> ANIRUDDHA BARUA
> Email: aniruddha.barua at colbd.com, cto at colbd.com
>
> ---------- Original Message -----------
> From: Fakrul Alam <fakrul at fakrul.com>
> To: Omar Ali <omarali113 at gmail.com>
> Cc: nog <nog at bdnog.org>, Simon Sohel Baroi / Global Business / 01847102243 / <simon.baroi at fiberathome.net>
> Sent: Tue, 22 Nov 2016 17:11:11 +1000
> Subject: Re: [bdNOG] Extra peer entries in HE BGP Info for our AS38592.
>
> > Dear Aniruddha,
> >
> > I am not sure whether you are doing AS_PATH filter. If not please do the following. I make the config with the understanding that you are not transiting for any ASN:
> >
> > ip as-path access-list 420 permit ^38592(_38592)*$
> > ip as-path access-list 420 permit ^$
> > !
> > neighbor {Summit Communications Ltd} filter-list 420 out
> > neighbor {1Asia Communication Pte Ltd} filter-list 420 out
> > neighbor {Bangladesh Telecommunications Company Ltd (BTCL)} filter-list 420 out
> >
> > [note : use the config at you own risk :-) ]
> >
> > Thanks
> > Pappu
> >
> > On Tue, Nov 22, 2016 at 3:01 PM, Omar Ali <omarali113 at gmail.com> wrote:
> >
> > Simon Bhai,
> >
> > Not only ConnectBD or Xpress is announcing prefixes learned from BDIX but some of us are helping to do so. I don't think Xpress or ConnectBD has peering with HE, please check below screenshots
> >
> > ConnectBD:
> >
> >
X-press
Technologies:
> >
> >
I
also didn't find their prefixs in EquinixIX, SG (usually we peer with
EquinixIX SG from BD where HE is
present).
> >
> >
I think our IIGs and ITCs who are serving ConnectBD and Xpress need to check their
prefix
filter.
> >
Regards,Omar
> >
> >
> >
> >
> >
> > On Mon, Nov 21, 2016 at 5:26 PM, Simon Sohel Baroi / Global Business / 01847102243 / <simon.baroi at fiberathome.net> wrote:
> >
> >
> > Dada,
> >
> > I guess Xpress and ConnectBD is announcing bdIX Prefix to the internet, atleast to Hurricane.
> >
> > - SIMON.
> >
> > On Mon, Nov 21, 2016 at 5:20 PM, Aniruddha Barua <aniruddha.barua at colbd.com> wrote:
> > Dear All,
> >
> > I was looking at the Hurricane Electric BGP page at http://bgp.he.net/AS38592#_peers (Updated 20 Nov
> > 2016 12:32 PST) about our ASN 38592 and found extra peer entries,
> >
> > AS65534 (BDIX),
> > AS133854 (X-press Technologies Ltd.) and
> > AS24481 (ConnectBD Ltd.).
> >
> > We have no peering with AS133854 and AS24481. I wonder why these two ASNs showed up here. We are
> > connected to BDIX (AS65534) though. But this private ASN should not appear here, right?
> >
> > Best regards,
> >
> > ANIRUDDHA BARUA
> > Email: aniruddha.barua at colbd.com, cto at colbd.com
> >
> > _______________________________________________
> > nog mailing list
> > nog at bdnog.org
> > http://mailman.bdnog.org/mailman/listinfo/nog
> >
> >
> >
> > --
> >
> > Simon Sohel Baroi | AGM | International Gateway and Cable |
> > Cell : +880-181-7022207 | Desk : +880-9666776677 Ext-1702 |
> > Mail : simon.baroi at fiberathome.net | Skype : tx.fttx |
> >
> >
> >
> > Reduce. Reuse. Recycle. Respect. It's the little things that really can make a difference.
> >
> > _______________________________________________
> > nog mailing list
> > nog at bdnog.org
> > http://mailman.bdnog.org/mailman/listinfo/nog
> >
> >
> >
> > _______________________________________________
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> >
> >
> ------- End of Original Message -------
>
------- End of Original Message -------
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