Default functions and scripts for bird2

Default

Define

These auto generated definitions from the scripts are used for filtering.

Filter

Example filters for import and export.ls

Function

aspath_bogon.conf

• Filter out bogon AS paths

aspath_contains_tier1.conf

• Filter out tier1 providers, no need to send them export data since they will have better routes that I do.

aspath_contains_upstream.conf

• Filter our own used upstream/transit providers

aspath_first_valid.conf

ebgp_export.conf

• Remove private AS numbers
• Filter on well know communities
• AS path prepending in community is set

ebgp_export_downstream.conf

• Filter out unacceptable prefix sizes

ebgp_export_peer.conf

• Filter out unvalid prefixes

ebgp_export_upstream.conf

• Filter out unvalid prefixes

ebgp_import.conf

• Check for bogon AS and prefixes
• Check for valid RPKI
• Demote AS nexhops to lower pref
• Scrub blackhole routes

ebgp_import_downstream.conf

• No filtering

ebgp_import_peers.conf

• Scrub communities

ebgp_import_upstream.conf

• Scrub communities

ipv4_acceptable_size.conf

• Check for valid prefix size (< /8 or > /24)

ipv4_bogon.conf

• Filter out bogon prefixes

ipv4_prefix_valid.conf

• Filter only own announced routes or downstream prefixes

ipv4_rpki_invalid.conf

• Check if prefix is valid or not

ipv6_acceptable_size.conf

• Check for valid prefix size (< /12 or > /48)

ipv6_bogon.conf

• Filter out bogon prefixes

ipv6_prefix_valid.conf

• Filter only own announced routes or downstream prefixes

ipv6_rpki_invalid.conf

• Check if prefix is valid or not

prefix_valid.conf

• Check !aspath-first-valid
• Check aspath_contains_tier1
• Check aspath_contains_upstream
• Check ipv4_prefix_valid
• Checl ipv6_prefix_valid

Protocols

Default protocols used by bird2

Scripts

create_asn_ipv6_define.sh

Create the define(s) for all the used AS networks

create_ixp_define.sh

Create the define(s) for all the used Internet Exchange Points