TNSR is able to use multiple discrete route tables but these tables do not offer complete VRF-style isolation. When routing packets, TNSR consults the route tables present on the interface the packet enters (ingress) which match the address family of the packet (IPv4 or IPv6).
If an interface is not configured for a specific route table, TNSR uses the
default table. For IPv4, the default routing table is
ipv4-VRF:0. For IPv6,
the default is
ipv6-VRF:0. Custom routing tables may be given arbitrary
VRF is in the name of the default route tables, but TNSR does
not offer full virtual routing and forwarding (VRF) features at this time.
Identical routes can have different destination paths in separate route tables, but identical networks cannot be directly connected to multiple interfaces.