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List: afnog
Subject: Re: [afnog] afnog Digest, Vol 79, Issue 7
From: Global One Solutions <malabow () gmail ! com>
Date: 2010-10-12 18:51:13
Message-ID: AANLkTin-4GjmrUQvQZSo7HzV7edkaPkGwn_Hc2C2FOn2 () mail ! gmail ! com
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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@afnog.org> wrote:
> Send afnog mailing list submissions to
> afnog@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@afnog.org
>
> You can reach the person managing the list at
> afnog-owner@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@globaltransit.net>
> To: Frank Habicht <geier@geier.ne.tz>
> Cc: afnog <afnog@afnog.org>
> Subject: Re: [afnog] bgp communities - please
> Message-ID: <201010120143.56495.mtinka@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 --------------
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> 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@network-services.uoregon.edu>
> To: afnog@afnog.org
> Subject: Re: [afnog] Thank you - route views
> Message-ID: <4CB3593F.3070802@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@routeviews.org)
> RouteViews Engineer
> help@routeviews.org
>
>
>
>
> ------------------------------
>
> Message: 3
> Date: Tue, 12 Oct 2010 08:25:57 +0300
> From: Frank Habicht <geier@geier.ne.tz>
> To: kemp@network-services.uoregon.edu
> Cc: afnog@afnog.org
> Subject: Re: [afnog] Thank you - route views
> Message-ID: <4CB3F165.8070807@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@gmail.com>
> To: AfriNIC Resource Policy Discussion List <rpd@afrinic.net>,
> africann <africann@afrinic.net>
> Cc: discuss <discuss@afrispa.org>, afnog <afnog@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@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@yahoo.com>
> To: abbey@uniben.edu, santabuza@yahoo.ca, hamisu99@yahoo.com,
> sanusiafeez@yahoo.co.uk, afnog@afnog.org, ahmedknuhu@yahoo.co.uk
> Subject: [afnog] Laurence GAILLET
> Message-ID: <478826.22791.qm@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@yahoo.com>
> To: abbey@uniben.edu, santabuza@yahoo.ca, hamisu99@yahoo.com,
> sanusiafeez@yahoo.co.uk, afnog@afnog.org, ahmedknuhu@yahoo.co.uk
> Subject: [afnog] sibel kus
> Message-ID: <786795.64050.qm@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
[Attachment #5 (text/html)]
Mark,<br><br>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.<br> <br><br>Thanks,<br><br><br><div class="gmail_quote">On Tue, \
Oct 12, 2010 at 8:00 AM, <span dir="ltr"><<a \
href="mailto:afnog-request@afnog.org">afnog-request@afnog.org</a>></span> \
wrote:<br><blockquote class="gmail_quote" style="margin: 0pt 0pt 0pt 0.8ex; \
border-left: 1px solid rgb(204, 204, 204); padding-left: 1ex;"> Send afnog mailing \
list submissions to<br> <a href="mailto:afnog@afnog.org">afnog@afnog.org</a><br>
<br>
To subscribe or unsubscribe via the World Wide Web, visit<br>
<a href="http://afnog.org/mailman/listinfo/afnog" \
target="_blank">http://afnog.org/mailman/listinfo/afnog</a><br> or, via email, send a \
message with subject or body 'help' to<br>
<a href="mailto:afnog-request@afnog.org">afnog-request@afnog.org</a><br>
<br>
You can reach the person managing the list at<br>
<a href="mailto:afnog-owner@afnog.org">afnog-owner@afnog.org</a><br>
<br>
When replying, please edit your Subject line so it is more specific<br>
than "Re: Contents of afnog digest..."<br>
<br>
<br>
Today's Topics:<br>
<br>
1. Re: bgp communities - please (Mark Tinka)<br>
2. Re: Thank you - route views (John Kemp)<br>
3. Re: Thank you - route views (Frank Habicht)<br>
4. Nomination period for the NRO-NC election from the AfriNIC<br>
region still open till 20:00UTC on 16/10/10 (McTim)<br>
5. Laurence GAILLET (Yahaya Wara)<br>
6. sibel kus (Yahaya Wara)<br>
<br>
<br>
----------------------------------------------------------------------<br>
<br>
Message: 1<br>
Date: Tue, 12 Oct 2010 01:43:50 +0800<br>
From: Mark Tinka <<a \
href="mailto:mtinka@globaltransit.net">mtinka@globaltransit.net</a>><br>
To: Frank Habicht <<a \
href="mailto:geier@geier.ne.tz">geier@geier.ne.tz</a>><br>
Cc: afnog <<a href="mailto:afnog@afnog.org">afnog@afnog.org</a>><br>
Subject: Re: [afnog] bgp communities - please<br>
Message-ID: <<a href="mailto:201010120143.56495.mtinka@globaltransit.net">201010120143.56495.mtinka@globaltransit.net</a>><br>
Content-Type: text/plain; charset="us-ascii"<br>
<br>
On Monday, October 11, 2010 01:40:10 pm Frank Habicht wrote:<br>
<br>
> I wanted to request that you all enable or set the<br>
> sending of BGP communities on all your iBGP sessions.<br>
<br>
Sadly, this is an artifact of classic IOS, where the BGP<br>
community capability needs to be specifically turned on.<br>
<br>
More sane code like IOS XR and JUNOS don't have this<br>
restriction. It can be a real PITA because not turning this<br>
on on even just one router can be a real tail-chaser.<br>
<br>
I believe a number of folk have requested Cisco to revise<br>
this so BGP communities are enabled by default, but hey,<br>
planes don't have bad landings - it's just the asphalt<br>
making contact with them :-).<br>
<br>
> example reason: if someone sends you a prefix with<br>
> no-export community then they really hope that you don't<br>
> advertise it to your upstreams...<br>
><br>
> And yes: real stuff observed that did real unwanted<br>
> breaking.<br>
<br>
Two things to consider when doing this:<br>
<br>
1. Best to co-ordinate the transmission of BGP<br>
communities with your upstreams. Several<br>
upstreams will either strip the BGP communities<br>
you pass on in updates, rewrite them, or both. If<br>
you pre-negotiate this relationship with your<br>
upstream, you won't miss those 3AM calls when<br>
they suddenly decide to do a network clean-up.<br>
<br>
2. Remember that the NO_EXPORT community affects ALL<br>
eBGP sessions within your upstreams network.<br>
While this will prevent your prefixes from being<br>
announced to their transits/peers, it will also<br>
block them from being announced to their own<br>
(small) customers. It is possible you may not<br>
want your upstream's transit providers to "hear"<br>
your routes, but you may want their small<br>
customers to.<br>
<br>
Cheers,<br>
<br>
Mark.<br>
-------------- next part --------------<br>
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<br>
------------------------------<br>
<br>
Message: 2<br>
Date: Mon, 11 Oct 2010 11:36:47 -0700<br>
From: John Kemp <<a \
href="mailto:kemp@network-services.uoregon.edu">kemp@network-services.uoregon.edu</a>><br>
To: <a href="mailto:afnog@afnog.org">afnog@afnog.org</a><br>
Subject: Re: [afnog] Thank you - route views<br>
Message-ID: <<a href="mailto:4CB3593F.3070802@network-services.uoregon.edu">4CB3593F.3070802@network-services.uoregon.edu</a>><br>
Content-Type: text/plain; charset=ISO-8859-1<br>
<br>
<br>
Happy to see the bgplay at RouteViews continues to be a<br>
useful tool. A couple of other tools people might be<br>
interested in...<br>
<br>
1. CYCLOPS<br>
<br>
You can register your prefix to be watched for free, and<br>
receive notifications upon changes. (We feed data into Cyclops.)<br>
There are also some nice ASN and DNS lookup tools, as well as<br>
some topology visualizations and data history lookups there.<br>
<br>
<a href="http://cyclops.cs.ucla.edu/" \
target="_blank">http://cyclops.cs.ucla.edu/</a><br> <a \
href="http://www.nanog.org/meetings/nanog43/abstracts.php?pt=NTkmbmFub2c0Mw==&nm=nanog43" \
target="_blank">http://www.nanog.org/meetings/nanog43/abstracts.php?pt=NTkmbmFub2c0Mw==&nm=nanog43</a><br>
<br>
2. HISTORICAL BGPLAY<br>
<br>
Ripe Labs has also worked on an historical version of BGPlay.<br>
Info on that can be found here:<br>
<br>
<a href="http://labs.ripe.net/Members/csquarce/content-historical-bgplay" \
target="_blank">http://labs.ripe.net/Members/csquarce/content-historical-bgplay</a><br>
<br>
John Kemp (<a href="mailto:kemp@routeviews.org">kemp@routeviews.org</a>)<br>
RouteViews Engineer<br>
<a href="mailto:help@routeviews.org">help@routeviews.org</a><br>
<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 3<br>
Date: Tue, 12 Oct 2010 08:25:57 +0300<br>
From: Frank Habicht <<a \
href="mailto:geier@geier.ne.tz">geier@geier.ne.tz</a>><br>
To: <a href="mailto:kemp@network-services.uoregon.edu">kemp@network-services.uoregon.edu</a><br>
Cc: <a href="mailto:afnog@afnog.org">afnog@afnog.org</a><br>
Subject: Re: [afnog] Thank you - route views<br>
Message-ID: <<a href="mailto:4CB3F165.8070807@geier.ne.tz">4CB3F165.8070807@geier.ne.tz</a>><br>
Content-Type: text/plain; charset=ISO-8859-1<br>
<br>
On 10/11/2010 9:36 PM, John Kemp wrote:<br>
> 1. CYCLOPS<br>
><br>
> You can register your prefix to be watched for free, and<br>
> receive notifications upon changes. (We feed data into Cyclops.)<br>
> There are also some nice ASN and DNS lookup tools, as well as<br>
> some topology visualizations and data history lookups there.<br>
><br>
> <a href="http://cyclops.cs.ucla.edu/" \
target="_blank">http://cyclops.cs.ucla.edu/</a><br> > <a \
href="http://www.nanog.org/meetings/nanog43/abstracts.php?pt=NTkmbmFub2c0Mw==&nm=nanog43" \
target="_blank">http://www.nanog.org/meetings/nanog43/abstracts.php?pt=NTkmbmFub2c0Mw==&nm=nanog43</a><br>
<br>
and i already jumped onto it - and recommended to others.<br>
<br>
now first question:<br>
If you or I announce a certain prefix ( a /24 contained within a bigger<br>
announcement ) to upstream with 'no-export' ...<br>
... would you expect this prefix to show up in Cyclops?<br>
<br>
it did.<br>
<br>
Frank<br>
<br>
PS: looking glass of upstream confirm they have the 'no-export'.<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 4<br>
Date: Tue, 12 Oct 2010 08:41:05 +0300<br>
From: McTim <<a href="mailto:dogwallah@gmail.com">dogwallah@gmail.com</a>><br>
To: AfriNIC Resource Policy Discussion List <<a \
href="mailto:rpd@afrinic.net">rpd@afrinic.net</a>>,<br>
africann <<a \
href="mailto:africann@afrinic.net">africann@afrinic.net</a>><br>
Cc: discuss <<a href="mailto:discuss@afrispa.org">discuss@afrispa.org</a>>, \
afnog <<a \
href="mailto:afnog@afnog.org">afnog@afnog.org</a>><br>
Subject: [afnog] Nomination period for the NRO-NC election from the<br>
AfriNIC region still open till 20:00UTC on 16/10/10<br>
Message-ID:<br>
<AANLkTi=<a \
href="mailto:vO_Hrq-bU6ez4tp0KB5LxOrnqRxh14UVVcFnn@mail.gmail.com">vO_Hrq-bU6ez4tp0KB5LxOrnqRxh14UVVcFnn@mail.gmail.com</a>><br>
Content-Type: text/plain; charset="iso-8859-1"<br>
<br>
apologies for cross-posting<br>
<br>
<br>
Dear All,<br>
<br>
Please note that there are 4 more days until the deadline:<br>
<br>
<a href="http://lists.afrinic.net/pipermail/announce/2010/000672.html" \
target="_blank">http://lists.afrinic.net/pipermail/announce/2010/000672.html</a><br> \
<br>
--<br>
Cheers,<br>
<br>
McTim<br>
"A name indicates what we seek. An address indicates where it is. A route<br>
indicates how we get there." Jon Postel<br>
-------------- next part --------------<br>
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<br>
------------------------------<br>
<br>
Message: 5<br>
Date: Mon, 11 Oct 2010 23:45:59 -0700 (PDT)<br>
From: Yahaya Wara <<a \
href="mailto:mywarra@yahoo.com">mywarra@yahoo.com</a>><br>
To: <a href="mailto:abbey@uniben.edu">abbey@uniben.edu</a>, <a \
href="mailto:santabuza@yahoo.ca">santabuza@yahoo.ca</a>, <a \
href="mailto:hamisu99@yahoo.com">hamisu99@yahoo.com</a>,<br> <a \
href="mailto:sanusiafeez@yahoo.co.uk">sanusiafeez@yahoo.co.uk</a>, <a \
href="mailto:afnog@afnog.org">afnog@afnog.org</a>, <a \
href="mailto:ahmedknuhu@yahoo.co.uk">ahmedknuhu@yahoo.co.uk</a><br>
Subject: [afnog] Laurence GAILLET<br>
Message-ID: <<a href="mailto:478826.22791.qm@web65702.mail.ac4.yahoo.com">478826.22791.qm@web65702.mail.ac4.yahoo.com</a>><br>
Content-Type: text/plain; charset=us-ascii<br>
<br>
<a href="http://www.de-beste-casino-online.com/net.php" \
target="_blank">http://www.de-beste-casino-online.com/net.php</a><br> <br>
<br>
<br>
<br>
<br>
<br>
------------------------------<br>
<br>
Message: 6<br>
Date: Mon, 11 Oct 2010 23:46:37 -0700 (PDT)<br>
From: Yahaya Wara <<a \
href="mailto:mywarra@yahoo.com">mywarra@yahoo.com</a>><br>
To: <a href="mailto:abbey@uniben.edu">abbey@uniben.edu</a>, <a \
href="mailto:santabuza@yahoo.ca">santabuza@yahoo.ca</a>, <a \
href="mailto:hamisu99@yahoo.com">hamisu99@yahoo.com</a>,<br> <a \
href="mailto:sanusiafeez@yahoo.co.uk">sanusiafeez@yahoo.co.uk</a>, <a \
href="mailto:afnog@afnog.org">afnog@afnog.org</a>, <a \
href="mailto:ahmedknuhu@yahoo.co.uk">ahmedknuhu@yahoo.co.uk</a><br>
Subject: [afnog] sibel kus<br>
Message-ID: <<a href="mailto:786795.64050.qm@web65711.mail.ac4.yahoo.com">786795.64050.qm@web65711.mail.ac4.yahoo.com</a>><br>
Content-Type: text/plain; charset=us-ascii<br>
<br>
<a href="http://benzakin.com/net.php" \
target="_blank">http://benzakin.com/net.php</a><br> <br>
<br>
<br>
<br>
<br>
<br>
------------------------------<br>
<br>
_______________________________________________<br>
afnog mailing list<br>
<br>
End of afnog Digest, Vol 79, Issue 7<br>
************************************<br>
</blockquote></div><br><br clear="all"><br>-- <br>Liban Mohamed<br>CCIE#22493<br><br>
_______________________________________________
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