You are a network engineer responsible for creating the following network and te

Question

You are a network engineer responsible for creating the following network and testing it in your lab before your company implements it. There are four routers connected to each other via point-to-point serial links. Each router has a LAN attached to it with the specified number of hosts.

Use the Class C address of 192.168.241.0 and subnet it (using VLSM) in order to successfully implement the network requirements for the four sites

53 hosts pc2

(Router) LOUISVILLE CHICAGO (Router) (Router) NASHVILLE

'Memphis (Router)

27 HOSTS 107 hosts 11 hosts

pc1 pc3 pc4

  

Network Plan

192.168.241.

Subnet Address

CIDR

MASK

First Host

Last Host

Broadcast

# Hosts Needed

Location

192.168.241.

Chi - Nsh P to P

192.168.241.

Chi - Lvl P to P

192.168.241.

Chi - Mph P to P

192.168.241.

Mph Internal LAN

192.168.241.

Chi Internal LAN

192.168.241.

Nsh Internal LAN

192.168.241.

Lvl internal LAN

Device IP Assignment

Location

Interface/Device

IP

Mask

Chicago

S1/0 –Lvl

Chicago

S1/1 – Mph

Chicago

S1/2 – Nsh

Chicago

Fa0

Chicago

PC2

Memphis

S0-Chi

Memphis

Fa0

Memphis

PC3

Louisville

S0-Chi

Louisville

Fa0

Louisville

PC1

Nashville

S0-Chi

Nashville

Fa0

Nashville

PC4

192.168.241.

Subnet Address

CIDR

MASK

First Host

Last Host

Broadcast

# Hosts Needed

Location

192.168.241.

Chi - Nsh P to P

192.168.241.

Chi - Lvl P to P

192.168.241.

Chi - Mph P to P

192.168.241.

Mph Internal LAN

192.168.241.

Chi Internal LAN

192.168.241.

Nsh Internal LAN

192.168.241.

Lvl internal LAN

Explanation / Answer

In datagram forwarding this is achieved by providing each switch with a forwarding table of (destination,next_hop) pairs. When a packet arrives, the switch looks up the destination address (presumed globally unique) in its forwarding table and finds the next_hop information: the immediate-neighbor address to which – or interface by which – the packet should be forwarded in order to bring it one step closer to its final destination. The next_hop value in a forwarding table is a single entry; each switch is responsible for only one step in the packet’s path. However, if all is well, the network of switches will be able to deliver the packet, one hop at a time, to its ultimate destination.

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