Switch Configuration

Fido

Fido is the Gigabit Ethernet switch connected to Fiordland and Saruman.

Technical Specifications

Field

Value

Switch Model

Cisco Catalyst 4948-10GE

FastEthernet Ports

48

Gigabit Ethernet Ports

2

Access the Switch

Plug an Ethernet cable into the port on the front of the switch labeled "SERIAL". Connect the other end of the cable into a USB-to-Ethernet adapter and plug that into Fiordland. Then, from the server, type sudo screen /dev/ttyUSB0 9600 to access Fido over serial. If the screen goes fully black, you might need to hit ENTER a couple times so that the prompt shows up.

If the prompt says fido#, you're good to go. If it says fido>, you'll need to type enable. The password for the switch is on passcard.

Set Up the VLAN

First, let's set up the Understudy VLAN.

  1. Type in config t to enter config mode.

  2. Enter vlan 2100 to initialize a VLAN with the ID 2100.

  3. Next, name vlan2100 gives it the name vlan2100.

  4. End the setup by typing end.

Assign a Port to VLAN

Next, we need to attach the Ethernet port (port 4, in this case) to the VLAN we just created.

  1. Type in config t to enter config mode.

  2. Enter int fa0/4 to configure port 4.

  3. Running switchport mode access designates the port as an access port, making it link to only one VLAN.

  4. Now, type in switchport access vlan 2100 to link it to VLAN 2100.

  5. End the setup by typing end.

Set VLAN IP Address

Now, we should give VLAN 2100 an IP. This will be the same as the IP address for the server.

  1. Type in config t to enter config mode.

  2. Enter int vlan 2100 to configure VLAN 2100.

  3. The command to set the IP address is ip address 198.38.21.113.

  4. Now let's the set the gateway with ip default-gateway 198.38.21.126.

  5. End the setup by typing end.

Set Up the Internet Port

Finally, we need to configure the port connected to core0.

  1. Type in config t to enter config mode.

  2. Enter int gigabitethernet0/1 to configure Gigabit Ethernet port 1.

  3. Running switchport mode access designates the port as an access port, making it link to only one VLAN.

  4. Now, type in switchport access vlan 2100 to link it to VLAN 2100.

  5. End the setup by typing end.

If You're Done...

Assuming nothing is wrong with Core0 or Xnor, the Internet should work now. If so, type copy running-config startup-config to make the changes persistent.