# Lab 6. Linux Networking: Internetworking and DNS overview
## *Kseniya Evdokimova*
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## **Questions to answer:**

### **1.**
### **Netplan**
To configure netplan, I saved (changed from the last lab) the configuration file, **01-netcfg.yaml**, under /etc/netplan/ with a .yaml extension (e.g. /etc/netplan/01-netcfg.yaml)
So, I added the vlans (with names vlan10 and vlan20) according to the structure in the provided manual.
### **Iplink**
-The first line creates a new vlan device vlan10 on device eth0:
- device specifies the physical device to act operate on.
- ip link add - add virtual link
- name specifies the name of the new virtual device.
- type specifies the type of the new device. (*vlan* - 802.1q tagged virtual LAN interface)

-The second line establishes the address.
-The third line changes device attributes: the state of it to up
-The fourth line adds default route via 192.168.10.1
-The fifth line shows the state of all network interfaces on the system.

Then the same happens for the 2nd vlan.

### 2.
Making a virtual bridge to be able to connect 2 different interfaces (intnet, intnet2), command to show that virtual bridge (switch) has both MAC addresses in its table.

-The first command, ip link add, is creating a bridge named br0.
-The second and third: two ip link set commands add the two Ethernet interfaces, device1 and device2, to the new bridge resulting in a connection between these two interfaces.
-The 5th command will list our interfaces connected to the bridge.
-The 6th line will show that virtual bridge (switch) has both MAC addresses in its table.

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*Innopolis virtual machine went down, so I sadly couldn't make the photo of the screen as I was doing the lab. Also, was not able to download another virtual machine in time. So I am mostly providing just the commands and explanations to them*