NET150 Lab 9.2 - eitan-j/tech-journal GitHub Wiki

Q1: Include a copy of this table in your submission (4 points)

Name	Network Address	Subnet Mask	Lowest Useable IP	Highest Useable IP	IP for Default Router
SalesWest	154.103.16.0/23	255.255.254.0	154.103.16.1	153.103.17.254	154.103.16.1
FinanceWest	154.103.18.0/24	255.255.255.0	154.103.18.1	154.103.18.254	154.103.18.1
SalesEast	154.103.19.0/25	255.255.255.128	154.103.19.1	154.103.19.126	154.103.19.1
FinanceEast	154.103.19.128/26	255.255.255.192	154.103.19.129	154.103.19.190	154.103.19.129
EAST-WEST	192.168.0.0/30	255.255.255.252	192.168.0.1	192.168.0.2	N/A

Q2: Explain in your own words what is happening when SalesWest1 tries to ping SalesEast.

• SalesWest1 checks if the IP of SalesWest1 and SalesEast are in the same network, by checking if their network IDs (which can be found by bitwise ANDing the IP address and netmask) are the same
• SalesWest1 finds the MAC address of the default gateway in it's ARP table, and sends a packet with the destination IP to that MAC address
• Switch0 receives the packet and finds the port the MAC address is connected to in its CAM table, and forwards the packet through that port
• West Router receives the packet and searches its routing table for a network that includes the destination IP, and fails

Q3: Take a screenshot of a successful ping between SalesWest1 and SalesEast, and include it with your submission. (1 point)

Q4: Take a screenshot of a successful ping between FinanceEast and FinanceWest, and include it with your submission. (1 point) Q5: Include in your submission the commands that you entered on the routers to enable connectivity. (2 point) In West Router:

enable
config terminal
ip route 154.103.19.0 255.255.255.128 192.168.0.2
ip route 154.103.19.128 255.255.255.192 192.168.0.2

In East Router:

enable
config terminal
ip route 154.103.16.0 255.255.254.0 192.168.0.1
ip route 154.103.18.0 255.255.255.0 192.168.0.1