MLS
Multi-Layer Switch
(aka Layer 3 capable switch)
Switch that has routing capabilities built in
Routing Table
Used by the router to cross-reference the layer 3 data and forward the packet ahead
Router will check all routes and pick the best one
Gateway Column in Routing Table
IP address for the “next hop” router.
If destination network ID is directly connected to router, column will have *, 0.0.0.0, or on-link written.
Genmask Column
Subnet mask for destination
Flags column
U = route is up and working
H = route is a host
G = route to gateway
Type and Iface columns
Which ports to use and what type of port it is
Default Route
Send every packet here unless there is a line on the table that matches