Lab 4‐2: Simple Routing - TheWumpDump/NET-150 GitHub Wiki

This lab was basically just experimenting with multi-layer switches in packet tracer.

All major commands have been mentioned in other journals
To set the IP/Subnet Mask on different interfaces of a multilayer switch in packet tracer, click on the switch and click on the config tab and then select the interface you want. When I tried entering the IP, the subnet mask was filled in automatically, but I am not sure if it simply defaults to 255.255.255.0 or if it actually accounts for the IP address.
To enter simulation mode, literally just click the big "Simulation" button in the lower right corner.
To create a whitelist of packets, first click the show all/none button so none are shown, then click "edit filters" and select the packet types you want (note the tabs within the filter editing menu)

Definitions:

A subnet mask is an IP-address-like number that denotes what part of the IP is the network and what part is the individual machine. A mask of 255.255.255.0 gives 254 possible individual machines while a mask of 255.255.255.128 only gives 127. It is also possible to make a larger network with a mask like 255.255.0.0, which would give 65534 maximum individual machines. Needless to say, that isn't super common.
A default gateway is a path that routers are told to use when there is no better known route available.