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assignment policy is documented in:
RIPE NCC members can request AS Numbers using the
form available in the LIR Portal or at:
****************************************************
Information about the RIPE Database can be found at:
http://www.ripe.net/db/index.html
****************************************************
####################################################################
# ROUTING POLICY FOR GRNET AS5408) #
####################################################################
General Info
==============
GRNET donwstream customers are Greek Universities, Academic
and Research Institutes.
GRNET has GEANT as its upstream; it also connects to GRIX
Internet Exchange.
PA Space Aggregation
=============
GRNET aggregates its PA space before announcing it to its
upstream(s) and exchanges. Should a custemer with PA space
wishes not to have its prefexes aggregated, a special community
should be used to tag this route (see below).
Primary/Backup control
========================
GRNET respects the MED received by its customers; thus, the
customers can indicate their primary/backup line and control
incoming traffic by setting MED appropriatelly. Also, the
customers may use the community 5408:110 to indicate their
backup connection (lower local pref), but this method is
recommended only for customers multihomed to another Greek ISP
that use their connection with GRNET as backup.
Anycast
========================
GRNET does not follow any explicit policy for anycast services.
Normal routing (and, thus, preference) applies to all anycast
routes.
BGP Communities used in GRNET:
================================
Informational Communities:
+---------------------------------------------------------------+
| These communities tag the source of the routes. They can ONLY |
| be appended by GRNET. Routes with this tag received by any |
| peer will be rejected! |
+---------------------------------------------------------------+
5408:1001 Routes received from GEANT
5408:1002 Routes received from GRIX
5408:1003 Routes from GRNET (Customers & BackBone)
Routing Manipulation (for GRNET customers only):
+---------------------------------------------------------------+
| This set of tools allow GRNET clients to manipulate their |
| routing: |
| |
| Primary/Backup Link selection: The customers can indicate |
| their primary or backup link by setting MED appropriatelly. |
| Additionally, customers can tag their backup(s) with |
| community 5408:110. MED is the recommented way to affect |
| primary/backup routing; communities are meant to be used only |
| by customers that are multihomed to another Greek ISP and |
| they use the non-GRNET connection as primary. |
| |
| Announcement Control: GRNET customers can prevent |
| their routes from being announced to GEANT and GRIX by tagging|
| them with the appropriate community. |
+---------------------------------------------------------------+
5408:110 Backup connection, set local pref to 110
5480:666 no-export Blackhole all traffic TOWARDS this
(/32 ipv4 and /128 ipv6) route,
MUST be compined with "no-export"
5408:2000 Do not aggregate (explicitely announce to
upstream and exchanges)
5408:4001 Don't announce to GRIX
5408:4005 Don't announce to GEANT
LOCAL PREFERENCES IN GRNET:
=============================
LocalPref 120: - GRNET Customers
- Special Customers (KROOT, SYZEYXIS, ...)
- Locally Generated GRNET Aggregates
LocalPref 115: - GRIX routes (MED=0 Primary, MED=20 Secondary)
LocalPref 110: - GRNET Customers, backup connection
LocalPref 100: - GEANT (MED=0 Primary, MED=20 Secondary)
######################################################################
=======================================================================
iBGP (AS5408)
----------------------------------------------------------------------
PEER DESCRIPTION:
Full-mesh iBGP peerings.
Import Policy: Blackhole routes tagged with 6408:666
Export Policy: Advertize (a) all routes (FIRT) or (b) GRNET & GRIX
routes only, depending on router capabilities.
======================================================================
=======================================================================
GEANT (AS20965)
----------------------------------------------------------------------
PEER DESCRIPTION:
GEANT is the Internet Upstream for GRNET
Import Policy: Accept all routes (apart from martians),
set MED appropratelly on primary & backup peering.
Export Policy: Announce all GRNET routes (tagged with 5408:1003)
that are not tagged with 5408:4005 (don't-announce-to-geant).
Aggregate PA space (except from the routes tagged with
5408:2000 (do not aggregate) community.
=======================================================================
=======================================================================
GRIX Peers
----------------------------------------------------------------------
PEER DESCRIPTION:
These are the GRIX Peers of GRNET
Import Policy: Reject routes tagged with special communities
Accept all other routes that
(a) have the appropriate AS path and
(b) originate from the peer (or behind it)
For these, and according to the received communities:
(i) Set the appropriate local preference
Export Policy: Announce all GRNET routes (tagged with 5408:1003)
that are not tagged with 5408:4001 (don't-announce-to-grix).
Aggregate PA space (except from the routes tagged with
5408:2000 (do not aggregate) community.
=======================================================================
=======================================================================
GRNET Clients
----------------------------------------------------------------------
PEER DESCRIPTION:
These are the normal GRNET clients (Universities, Research orgs, etc)
Import Policy: Reject routes tagged with special communities
Accept all other routes that
(a) have the appropriate AS path and
(b) originate from the client (or behind it)
For these, and according to the received communities:
(i) Blackhole routes tagged with 6408:666
(cannot be described in RPSL, but it is implemented)
(ii) Set the appropriate local preference
Prefixes with no corresponding exact matching route on the
RIPE whois database are only accepted if tagged with NO_EXPORT
Local Preference (on backup links) can be lowered by
using the appropriate community (5408:110), but MED is
recommended for this purpose.
Export Policy:
(a) either all routes (FIRT)
(b) or a partial routing table, consiting
GRNET (5408:1003) and GRIX (5408:1002) routes.
=======================================================================
=======================================================================
K-ROOT mirror @ GRIX
----------------------------------------------------------------------
PEER DESCRIPTION:
K-ROOT @ GRIX. Accept K-Root routes, announce within GRNET *only*
Announce default route.
=======================================================================
=======================================================================
AS112 Project @ GRNET
----------------------------------------------------------------------
PEER DESCRIPTION:
AS112 Project. Announce nothing.
=======================================================================
=======================================================================
SYZEYXIS
----------------------------------------------------------------------
PEER DESCRIPTION:
SYZEYXIS. announce GRNET routes, route within GRNET *only*.
=======================================================================
=======================================================================
AKAMAI
----------------------------------------------------------------------
PEER DESCRIPTION:
AKAMAI. Accept no routes. Announce GRNET customers.
=======================================================================
=======================================================================
ROUTE-COLLECTOR
----------------------------------------------------------------------
PEER DESCRIPTION:
ROUTE-COLLECTOR. Accept no routes. Announce everything
=======================================================================
#######################################################################
# END OF ROUTING POLICY FOR GRNET #
#######################################################################
--------------------------------------
For complains about abuse, spam etc:
--------------------------------------
The above information was collected from whois.ripe.net, using
object "AS5408" on Feburary 1, 2012
|
