[afnog] afnog Digest, Vol 79, Issue 7
Global One Solutions
malabow at gmail.com
Tue Oct 12 18:51:13 UTC 2010
Mark,
You hit this on the head, Most ISP only listen communities from customers
and pass community to customer, I have seen in the US where they strip
community from their Peering. I would also advise people to take advantage
community in their internal network. One can tag community based on
region/city/ etc, so when troubleshooting they know the route based on
community. I am a big fan on community, NOT only no-export.
Thanks,
On Tue, Oct 12, 2010 at 8:00 AM, <afnog-request at afnog.org> wrote:
> Send afnog mailing list submissions to
> afnog at afnog.org
>
> To subscribe or unsubscribe via the World Wide Web, visit
> http://afnog.org/mailman/listinfo/afnog
> or, via email, send a message with subject or body 'help' to
> afnog-request at afnog.org
>
> You can reach the person managing the list at
> afnog-owner at afnog.org
>
> When replying, please edit your Subject line so it is more specific
> than "Re: Contents of afnog digest..."
>
>
> Today's Topics:
>
> 1. Re: bgp communities - please (Mark Tinka)
> 2. Re: Thank you - route views (John Kemp)
> 3. Re: Thank you - route views (Frank Habicht)
> 4. Nomination period for the NRO-NC election from the AfriNIC
> region still open till 20:00UTC on 16/10/10 (McTim)
> 5. Laurence GAILLET (Yahaya Wara)
> 6. sibel kus (Yahaya Wara)
>
>
> ----------------------------------------------------------------------
>
> Message: 1
> Date: Tue, 12 Oct 2010 01:43:50 +0800
> From: Mark Tinka <mtinka at globaltransit.net>
> To: Frank Habicht <geier at geier.ne.tz>
> Cc: afnog <afnog at afnog.org>
> Subject: Re: [afnog] bgp communities - please
> Message-ID: <201010120143.56495.mtinka at globaltransit.net>
> Content-Type: text/plain; charset="us-ascii"
>
> On Monday, October 11, 2010 01:40:10 pm Frank Habicht wrote:
>
> > I wanted to request that you all enable or set the
> > sending of BGP communities on all your iBGP sessions.
>
> Sadly, this is an artifact of classic IOS, where the BGP
> community capability needs to be specifically turned on.
>
> More sane code like IOS XR and JUNOS don't have this
> restriction. It can be a real PITA because not turning this
> on on even just one router can be a real tail-chaser.
>
> I believe a number of folk have requested Cisco to revise
> this so BGP communities are enabled by default, but hey,
> planes don't have bad landings - it's just the asphalt
> making contact with them :-).
>
> > example reason: if someone sends you a prefix with
> > no-export community then they really hope that you don't
> > advertise it to your upstreams...
> >
> > And yes: real stuff observed that did real unwanted
> > breaking.
>
> Two things to consider when doing this:
>
> 1. Best to co-ordinate the transmission of BGP
> communities with your upstreams. Several
> upstreams will either strip the BGP communities
> you pass on in updates, rewrite them, or both. If
> you pre-negotiate this relationship with your
> upstream, you won't miss those 3AM calls when
> they suddenly decide to do a network clean-up.
>
> 2. Remember that the NO_EXPORT community affects ALL
> eBGP sessions within your upstreams network.
> While this will prevent your prefixes from being
> announced to their transits/peers, it will also
> block them from being announced to their own
> (small) customers. It is possible you may not
> want your upstream's transit providers to "hear"
> your routes, but you may want their small
> customers to.
>
> Cheers,
>
> Mark.
> -------------- next part --------------
> A non-text attachment was scrubbed...
> Name: signature.asc
> Type: application/pgp-signature
> Size: 836 bytes
> Desc: This is a digitally signed message part.
> URL: <
> http://afnog.org/pipermail/afnog/attachments/20101012/3ffc2981/attachment-0001.pgp
> >
>
> ------------------------------
>
> Message: 2
> Date: Mon, 11 Oct 2010 11:36:47 -0700
> From: John Kemp <kemp at network-services.uoregon.edu>
> To: afnog at afnog.org
> Subject: Re: [afnog] Thank you - route views
> Message-ID: <4CB3593F.3070802 at network-services.uoregon.edu>
> Content-Type: text/plain; charset=ISO-8859-1
>
>
> Happy to see the bgplay at RouteViews continues to be a
> useful tool. A couple of other tools people might be
> interested in...
>
> 1. CYCLOPS
>
> You can register your prefix to be watched for free, and
> receive notifications upon changes. (We feed data into Cyclops.)
> There are also some nice ASN and DNS lookup tools, as well as
> some topology visualizations and data history lookups there.
>
> http://cyclops.cs.ucla.edu/
>
> http://www.nanog.org/meetings/nanog43/abstracts.php?pt=NTkmbmFub2c0Mw==&nm=nanog43
>
> 2. HISTORICAL BGPLAY
>
> Ripe Labs has also worked on an historical version of BGPlay.
> Info on that can be found here:
>
> http://labs.ripe.net/Members/csquarce/content-historical-bgplay
>
> John Kemp (kemp at routeviews.org)
> RouteViews Engineer
> help at routeviews.org
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 12 Oct 2010 08:25:57 +0300
> From: Frank Habicht <geier at geier.ne.tz>
> To: kemp at network-services.uoregon.edu
> Cc: afnog at afnog.org
> Subject: Re: [afnog] Thank you - route views
> Message-ID: <4CB3F165.8070807 at geier.ne.tz>
> Content-Type: text/plain; charset=ISO-8859-1
>
> On 10/11/2010 9:36 PM, John Kemp wrote:
> > 1. CYCLOPS
> >
> > You can register your prefix to be watched for free, and
> > receive notifications upon changes. (We feed data into Cyclops.)
> > There are also some nice ASN and DNS lookup tools, as well as
> > some topology visualizations and data history lookups there.
> >
> > http://cyclops.cs.ucla.edu/
> >
> http://www.nanog.org/meetings/nanog43/abstracts.php?pt=NTkmbmFub2c0Mw==&nm=nanog43
>
> and i already jumped onto it - and recommended to others.
>
> now first question:
> If you or I announce a certain prefix ( a /24 contained within a bigger
> announcement ) to upstream with 'no-export' ...
> ... would you expect this prefix to show up in Cyclops?
>
> it did.
>
> Frank
>
> PS: looking glass of upstream confirm they have the 'no-export'.
>
>
>
> ------------------------------
>
> Message: 4
> Date: Tue, 12 Oct 2010 08:41:05 +0300
> From: McTim <dogwallah at gmail.com>
> To: AfriNIC Resource Policy Discussion List <rpd at afrinic.net>,
> africann <africann at afrinic.net>
> Cc: discuss <discuss at afrispa.org>, afnog <afnog at afnog.org>
> Subject: [afnog] Nomination period for the NRO-NC election from the
> AfriNIC region still open till 20:00UTC on 16/10/10
> Message-ID:
> <AANLkTi=vO_Hrq-bU6ez4tp0KB5LxOrnqRxh14UVVcFnn at mail.gmail.com>
> Content-Type: text/plain; charset="iso-8859-1"
>
> apologies for cross-posting
>
>
> Dear All,
>
> Please note that there are 4 more days until the deadline:
>
> http://lists.afrinic.net/pipermail/announce/2010/000672.html
>
> --
> Cheers,
>
> McTim
> "A name indicates what we seek. An address indicates where it is. A route
> indicates how we get there." Jon Postel
> -------------- next part --------------
> An HTML attachment was scrubbed...
> URL: <
> http://afnog.org/pipermail/afnog/attachments/20101012/4ede5dca/attachment-0001.html
> >
>
> ------------------------------
>
> Message: 5
> Date: Mon, 11 Oct 2010 23:45:59 -0700 (PDT)
> From: Yahaya Wara <mywarra at yahoo.com>
> To: abbey at uniben.edu, santabuza at yahoo.ca, hamisu99 at yahoo.com,
> sanusiafeez at yahoo.co.uk, afnog at afnog.org, ahmedknuhu at yahoo.co.uk
> Subject: [afnog] Laurence GAILLET
> Message-ID: <478826.22791.qm at web65702.mail.ac4.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> http://www.de-beste-casino-online.com/net.php
>
>
>
>
>
>
> ------------------------------
>
> Message: 6
> Date: Mon, 11 Oct 2010 23:46:37 -0700 (PDT)
> From: Yahaya Wara <mywarra at yahoo.com>
> To: abbey at uniben.edu, santabuza at yahoo.ca, hamisu99 at yahoo.com,
> sanusiafeez at yahoo.co.uk, afnog at afnog.org, ahmedknuhu at yahoo.co.uk
> Subject: [afnog] sibel kus
> Message-ID: <786795.64050.qm at web65711.mail.ac4.yahoo.com>
> Content-Type: text/plain; charset=us-ascii
>
> http://benzakin.com/net.php
>
>
>
>
>
>
> ------------------------------
>
> _______________________________________________
> afnog mailing list
>
> End of afnog Digest, Vol 79, Issue 7
> ************************************
>
--
Liban Mohamed
CCIE#22493
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://afnog.org/pipermail/afnog/attachments/20101012/20408d76/attachment.html>
More information about the afnog
mailing list