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update bird and bird6 config

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This commit is contained in:
ohrensessel 2014-08-27 15:30:07 +02:00
parent 710921dc66
commit 65d5215093
2 changed files with 79 additions and 29 deletions
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25
templates/etc/bird/bird.conf.erb
View file

@ -158,6 +158,17 @@ template bgp locals {
next hop self;
};
### local gateways ###
<% @peerings_v4.each_pair do |key, hash| -%><% if hash["ip"] != @own_ipv4 -%>
protocol bgp <%= key %> from <%= hash["template"] %> {
neighbor <%= hash["ip"] %> as ownas;
};
<% end -%><% end -%>
<% if @gw_do_ic_peering -%>
### icvpn peerings ###
# template for icvpn gateways of other cities
template bgp peers {
table ebgp;
@ -168,20 +179,12 @@ template bgp peers {
route limit 10000;
};
### local gateways ###
<% @peerings_v4.each_pair do |key, hash| -%><% if hash["ip"] != @own_ipv4 -%>
protocol bgp <%= key %> from <%= hash["template"] %> {
neighbor <%= hash["ip"] %> as ownas;
};
<% end -%><% end -%>
### icvpn peerings ###
<% if @gw_do_ic_peering -%>
<% @ic_peerings_v4.each_pair do |key, hash| -%><% if hash["ip"] != @own_ipv4 -%>
protocol bgp <%= key %> from <%= hash["template"] %> {
neighbor <%= hash["ip"] %> as <%= hash["as"] %>;
};
<% end -%><% end -%>
<% end -%>
# this is for local peerings not managed by puppet
include "*.peering"

83
templates/etc/bird/bird6.conf.erb
View file

@ -1,14 +1,23 @@
table ibgp; # internal BGP peerings
table ebgp; # external (icvpn) BGP peerings
table freifunk; # kernel table 42 for routing from ff network
table ibgp; # internal BGP peerings
table ebgp; # external (icvpn) BGP peerings
table freifunk; # synced to kernel table 42 for routing from ff network
table unreach; # synced to kernel table 43 to intercept in cases there
# is no default route via icvpn
# quite self explanatory :)
define ownas = <%= @ff_as %>;
# the router id in bird is 32 bit wide and bird allows the IPv4 notation
# to set it. quite confusing, but setting it to the gateway's IPv4 address
# is a good approach here.
router id <%= @own_ipv4 %>;
### functions ###
# own networks
# own networks as of http://wiki.freifunk.net/IPv6:Prefixe and
# http://wiki.freifunk.net/IC-VPN
# the '+' defines to not only match the prefix length given but
# also any smaller prefixes (like 48 and 64)
function is_self_net() {
return net ~ [ fd51:2bb2:fd0d::/48+,
2001:bf7:180::/44+,
@ -20,11 +29,21 @@ function is_self_net() {
}
# freifunk ip ranges in general
# this is the public address space assigned to the
# Foerderverein freie Netzwerke e.V.
function is_freifunk() {
return net ~ [ fc00::/7{48,64},
2001:bf7::/32+];
return net ~ [ 2001:bf7::/32+ ];
}
# unique local addresses
# this is the non-public address range used within freifunk
# communities and the IC-VPN
function is_ula() {
return net ~ [ fc00::/7{48,64} ];
}
# default route
# be careful with importing default routes from arbitrary peers
function is_default() {
return net ~ [ ::0/0 ];
}
@ -33,10 +52,10 @@ function is_default() {
# synchronize from bird to main kernel routing table
# nothing in the other direction
# (do not sync a default route we received to the main routing table
# as this might collide with the normal default route of the host)
# do not sync a default route we received to the main routing table
# as this might collide with the normal default route of the host
protocol kernel k_mast {
scan time 10;
scan time 20;
import none;
export where !is_default();
};
@ -44,16 +63,26 @@ protocol kernel k_mast {
# synchronize from birds freifunk table to kernel routing table 42
# nothing in the other direction
protocol kernel k_frei {
scan time 10;
scan time 20;
table freifunk;
kernel table 42;
import none;
export all;
};
# syncronize from birds unreach table to kernel routing table 43
# nothing in the other direction
protocol kernel k_unreach {
scan time 20;
table unreach;
kernel table 43;
import none;
export all;
};
# this pseudo-protocol watches all interface up/down events
protocol device {
scan time 10;
scan time 20;
};
### pipes ###
@ -75,17 +104,20 @@ protocol pipe p_ibgptbl {
export where !is_self_net();
};
# sync routes (freifunk and default routes we got) from ibgp to freifunk
# sync routes (freifunk, ula and default routes we got) from ibgp to freifunk
# sync nothing from freifunk to ibgp
protocol pipe p_freitbl {
table ibgp;
peer table freifunk;
import none;
export where is_freifunk() || is_default();
export where is_freifunk() || is_default() || is_ula();
};
### static routes ###
# here you should define unreachable (=reject) routes for your own
# prefixes from http://wiki.freifunk.net/IC-VPN and
# http://wiki.freifunk.net/IPv6:Prefixe
protocol static static_ffhh {
route fd51:2bb2:fd0d::/48 reject;
route 2001:bf7:180::/44 reject;
@ -97,15 +129,27 @@ protocol static static_ffhh {
table ebgp;
};
# these are the address ranges used in your network
# note that these should be /64 networks in most cases from within
# the above bigger ranges
protocol static local_ffhh {
route fd51:2bb2:fd0d::/64 via "br-ffhh";
route 2001:bf7:180::/64 via "br-ffhh";
route fd51:2bb2:fd0d::/64 via "br-ffhh"; # replace br-ffhh with the name
route 2001:bf7:180::/64 via "br-ffhh"; # of your freifunk interface
table freifunk;
};
# this defines an unreachable default route so that pakets are not forwarded
# via the main routing table if no default route exists within table 42
# note that this requires an additional rule within your policy routing
protocol static unreachable_default {
route ::/0 reject;
table unreach;
};
### templates ###
# template for same city freifunk gateways
# even the ones which do not have a direct IC-VPN connection
template bgp locals {
table ibgp;
local as ownas;
@ -132,15 +176,16 @@ template bgp peers {
local as ownas;
source address <%= @ic_vpn_ip6 %>;
# ignore routes for our own network
import where is_freifunk() && !is_self_net();
export where is_freifunk() || (source = RTS_BGP);
import where (is_freifunk() || is_ula()) && !is_self_net();
export where (is_ula() || is_freifunk() || (source = RTS_BGP)) && !is_default();
route limit 10000;
};
# template for upstream gateways
# that are allowed to announce a default route to us
template bgp upstream from peers {
# accept freifunk networks and default route
import where (is_freifunk() || is_default()) && !is_self_net();
import where (is_freifunk() || is_ula() || is_default()) && !is_self_net();
};
<% @ic_peerings_v6.each_pair do |key, hash| -%><% if hash["ip"] != @own_ipv6 -%>
@ -150,3 +195,5 @@ protocol bgp <%= key %> from <%= hash["template"] %> {
<% end -%><% end -%>
<% end -%>
# this is for local peerings not managed by puppet
include "*.peering6";