Bandura Communications has registered AS number 4242422924 in dn42 for experimentation.
- Experiments: The Lab AS can assign /64 or /56 IPv6 networks for experimentation.
In contrast to the main network, the Lab AS is located on a single node in Germany, Nuremberg.
Peering
Peering policy: Closed / Selective
BGP communities
| Communitiy |
Name |
Description |
| 65535:65281 |
no-export |
do not advertise to any eBGP peers (implemented by bird) |
| 65535:65282 |
no-advertise |
do not advertise to any BGP peer (implemented by bird) |
| 65535:65283 |
no-export-subconfed |
do not advertise to any eBGP peer or to confederation (implemented by bird) |
| 64511:(1-9) |
Latency |
Community, which specifies the maximum latency. |
| 64511:(21-29) |
Bandwidth |
Community, which specifies the minimum bandwidth. |
| 64511:(31-34) |
Crypto / Encryption |
Community, which specifies how the transmitted data is encrypted. |
| 64511:(41-57) |
Region |
BGP communities for route origin |
| 64511:(1000-1999) |
Country |
BGP communities for route origin |
| 4242422924:5:1 |
Physical connection |
| 4242422924:5:2 |
Connection over Internet Exchange Points (Manually or via router server) |
| 4242422924:5:3 |
Connection over Tunnel |
| 4242422924:5:4 |
Connection over Virtual Internet Exchange Points (Manually or via router server) |
| 4242422924:5:5 |
Unknown type |
| 4242422924:150:OTC |
BGP OTC attributes are filtered. The value of such a filtered attribute is appended to the route in the form of this community. |
| 4242422924:131:ASN |
First ASN in AS path |
| 4242422924:132:ASN |
Last ASN in AS path |
| 4242422924:133:LEN |
Length of the AS path |
see RFC1997, RFC8642, Bird communities
Filters
The following filters are applied to imported routes:
- IPv4 is not supported
- Only valid dn42 networks are accepted
- The own network is not imported
- Routes with path length over 25 are filtered
- Routes containing blacklisted ASNs will be filtered
- Routes that do not have a valid ROA (does not accept unknown) are filtered.
- IP packets with a source address from our networks are denied.
Routing Policy
- Prefer route with the highest Local Preference attribute.
- Prefer route with the shortest AS path.
- Prefer the lowest value of the Multiple Exit Discriminator.
- Prefer routes received via eBGP over ones received via iBGP.
- Prefer older routes.
see BIRD 2.0 User’s Guide 6.3 BGP
bgp_med
bgp_med |
Description |
0 |
default |
+ ( 4 - [1-4] ) * 600 |
Crypto class |
+ ( 9 - [1-9] ) * 100 |
Bandwidth class |
+ ( [1-9] - 1 ) * 300 |
Latency class |
+ ( [1-5] - 1 ) * 10 |
Link class |
bgp_local_pref
bgp_local_pref |
Description |
0 |
graceful shutdown |
100 |
default |
+ 500 |
Direct peer (AS path length = 1) |
| +/- manuel configured |
For example, in case of latency problems or slow connections. |
Numbers and Addresses
| AS |
4242422924 |
| IPv6 net |
fd00:8e13:ce5d::/48 |
| Prefix |
Usage |
fd00:8e13:ce5d::/48 |
Full prefix |
- fd00:8e13:ce5d::/64 |
Nodes |
- - fd00:8e13:ce5d::/112 |
Nodes addresses |
- fd00:8e13:ce5d:4e90::/60 |
Lab 4e90 |
- fd00:8e13:ce5d:cb00::/56 |
Lab cb00 |
- fd00:8e13:ce5d:8a00::/56 |
Lab 8a00 |
Nodes
| Name |
Location |
Bandwidth |
Provider |
Note |
| srv.dn42-lab.de |
Nuremberg, Germany |
1Gbit/s (shared) |
Netcup |
|
IP addresses of my nodes:
| Name |
IPv6 |
| srv.dn42-lab.de |
fd00:8e13:ce5d::1, fd00:8e13:ce5d::53, fd00:8e13:ce5d::2924 (for ULA peering), fd00:8e13:ce5d::9743 |
Peerings
