LCOS implements the routing via the FIB (Forwarding Information Base).
Note: There is also the RIB (Routing Iinformation Base), which prioritizes routes from different sources that have the same destination network and the same routing tag. Prioritization is influenced by the administrative distance.
The FIB is based on the following sources:
- Automatically generated sources:
- Dynamic routing protocols (RIP, BGP, LISP, OSPF)
- DHCP
- IPv6 auto config
- Manually generated sources:
- Routing table (IPv4 routing table or IPv6 routing table)
- LAN interface (IPv4 or IPv6 network)
- WAN interface (IPv4 or IPv6 Internet- and VPN connection)
- WAN tag table (IPv4 only)
- Loopback addresses
A separate table is created in the FIB for each routing tag.
