(IPv4) Peering with AS28017

   
   

This document describes the necessary steps to set up a peering with the CAR-IX ASN (AS28017) and a sample Cisco router config that can be used to set-up the peering with the Caribbean Internet Exchange (CAR-IX) AS28017 router. In case of questions, please contact noc@car-ix.net.

Note Please Note the Following:
 
  • AS28017 only peers with parties that are directly connected to the CAR-IX infrastructure.
  • AS28017 does not sign additional contracts for peering sessions (“peering agreements”).

1: Add the peer

 

 

In the "router bgp xxx" configuration section of your router that is attached to the AMS-IX shared medium you should add a peer: the AS28017 router at CAR-IX.


neighbor 200.0.20.1 remote-as 28017
neighbor 200.0.20.1 version 4
neighbor 200.0.20.1 filter-list 31 in
neighbor 200.0.20.1 filter-list 32 out
neighbor 200.0.20.1 next-hop-self


Adjust the numbers of the AS path filter-lists according to your own preferences.

 

2: Add the access-lists

 

 

Make sure the AS path filter-lists are set up such that you only permit routes with the CAR-IX Autonomous System Number from AS28017 and that you announce any routes you care to share to the CAR-IX router.

ip as-path access-list 31 permit ^(28017_)+$

ip as-path access-list 32 permit ^my-AS$
ip as-path access-list 32 permit my-Customer-1$
ip as-path access-list 32 permit my-Customer-2$
...

In case you adjusted the numbers of the AS path filter-lists in Step 1, you should use the same numbers in this step.

Important The above is only an example. In general, you want to configure outgoing access list to only announce your (and your customer's) routes. If you plan on sending us a full routing table, please let us know in advance. We will use best routes for transit. Also, please do not announce AS28017 advertisements to non-customers without our explicit request.

3: Send e-mail to <noc@car-ix.net>

 

 

When you configured your end of the peering, please notify the operator of the CAR-IX by sending e-mail to <noc@car-ix.net> stating you set up the peering with the AS28017 router and you want the AS28017 router to start the peering with you. Please include the following details in your e-mail message:

  • Provider name
  • IP address of router at CAR-IX
  • ASN that the router at CAR-IX resides in

The peering from the AS28017 router will be set up as soon as possible. You will be notified when the peering is up.

 

4: Update your aut-num: object in an Internet Routing Registry database

 

 

Your peering with AS28017 should be registered in one of hte Internet Routing Registrys such as at the RIPE NCC, just like all your other peerings. You can use the template below. Please adjust the cost in the “import” clause according to your own needs and put the correct AS set(s) in the “export” clause.

 import:      from AS28017
	        action pref=100;
	        accept AS28017
 export:      to AS28017
	        announce MY-AS-SET