NETW204_assignment3
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NETW204_assignment3

Course Number: NETW 204, Summer 2013

College/University: Conestoga

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NETW-204 Assignment #3 Week 5 Refering to figure 1 below: You are the network administrator for the network depicted in the diagram. You have been assigned the address space 10.1.16.0/21 to create the LANs you need, and the 172.16.1.0/28 space for your WAN links. LAN: 10.1.16.0/21 WAN: 172.16.1.0/28 LAN Subnets Begin by creating and assigning the LAN subnets you will use. In order to make the most efficient use...

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Assignment NETW-204 #3 Week 5 Refering to figure 1 below: You are the network administrator for the network depicted in the diagram. You have been assigned the address space 10.1.16.0/21 to create the LANs you need, and the 172.16.1.0/28 space for your WAN links. LAN: 10.1.16.0/21 WAN: 172.16.1.0/28 LAN Subnets Begin by creating and assigning the LAN subnets you will use. In order to make the most efficient use of your address space you should start by creating the subnet needed for the LAN with the most hosts and then work you down to the smallest LAN. Using the address space 10.1.16.0/21, create subnets for the LANs shown in the diagram and fill in the table 1 below. Notice that the first 7 subnets are all basically the same size and all subnets are all factors of 2 (remember 2n-2 where n is the number of host bits tells you the subnet size). Also remember for the most efficient addressing you should use the smallest size subnet that provides you the needed number of hosts. TABLE 1: (Questions 1-8) Questio LAN Subnet Address Subnet Mask n 1. R1 LAN S3 10.1.16.0 255.255.255.0 2. R1 LAN S4 10.1.17.0 255.255.255.0 3. R2 LAN S5 10.1.18.0 255.255.255.0 4. R2 LAN S6 10.1.19.0 255.255.255.0 5. R3 LAN S7 10.1.20.0 255.255.255.0 6. R3 LAN S8 10.1.21.0 255.255.255.0 7. HQ LAN S1 10.1.22.0 255.255.255.0 8. HQ LAN S2 10.1.23.0 255.255.255.0 WAN Subnets For the WAN links, you have been assigned the 172.16.1.0/28 address space. Fill in the subnets in Table 2 below by subnetting the assigned WAN space. TABLE 2: (Questions 9-11) Questio WAN Subnet Address Subnet Mask n 9. HQ-R1 172.16.1.0 255.255.255.252 10. HQ-R2 172.16.1.8 255.255.255.252 11. HQ-R3 172.16.1.8 255.255.255.252 Assign addresses Use Table 3 below to document the IP addresses for the indicated interfaces following the guidelines below: 1. Assign the first IP address for all LANs to the router interface. 2. Assign HQ the first IP address for all WAN links to Branch routers. Table 3: (Questions 13-27) Device 13 HQ Router 14 15 16 17 18 R1 Router 19 Interface Fa0/0 Fa0/1 S0/0/0 S0/1/0 S0/0/1 Fa0/0 Fa0/1 Address 10.1.22.1 10.1.23.1 209.165.201.2 172.16.1.5 172.16.1.1 10.1.16.1 10.1.17.1 Mask 255.255.255.0 255.255.255.128 255.255.255.252 255.255.255.252 255.255.255.252 255.255.255.0 255.255.255.0 20 21 22 23 24 25 26 27 Bonus R2 Router R3 Router n/a S0/0/0 Fa0/0 Fa0/1 S0/0/0 Fa0/0 Fa0/1 S0/0/0 n/a 172.16.1.2 10.1.18.1 10.1.19.1 172.16.1.6 10.1.20.1 10.1.21.1 172.16.1.10 n/a 255.255.255.252 255.255.255.0 255.255.255.0 255.255.255.252 255.255.255.0 255.255.255.0 255.255.255.252 EIGRP Calculation List Metric the values used in the EIGRP composite metric to calculate the preferred path (4): 28 Delay 29 Reliabilty 30 Load 31 Bandwith Routing concepts Question 32 What is the default formula for the EIGRP composite metric? Answer EIGRP Metic=256*([K1Bw/(256-Load) + K3Delay][K5/(Reliability + K4)]) 33 What command can be used to view the current K value being used by EIGRP? Show Interface 34 What command can be used to see the actual values of the EIGRP metric? Show Interface 35 The _____________ metric is displayed in Kbps? Bandwidth 36 The default value used by most serial interfaces is based on T1 connections and is______________bps? 1.544 MBPS 37 The measure of the probability a link will fail based on its history (downtime, errors) is referred to as ____________ and is measured with a value between 0 and 255. 38 ____________represents the amount of traffic using the link with a value between 0 and 255. Reliability 39 What is the main difference between a parent route and an ultimate route? -The Defualt Routes are processed -Parent Routes dont contain any next hop IP adress or exit 40 What is the relationship between parent and child The parent maintains the subnet mask of the child Administrative Distance routes? route 41 Provide a brief description of a level 1 route: 42 What are the types of level one routes? Level 1 routes can function as a defualt routes, supernet routes, and network routes. They also have a subnet mask equal to or less than the classful mask of the network address. An ultimate route DUAL Concepts List at least 3 advantages that DUAL offers: 43 Loop Free paths 44 Fast Convergence 45 Minimum bandwith usage with bounded updates 46 Dual Concept Successor 47 Feasible distance (FD) 48 Feasible successor 49 Feasibility condition (FC) 50 Reported Distance Definition The neighbour/ peer with the lowest metric/distance to that network The Feasible Distance is the metric of a network advertised by the connected neighbor plus the cost of reaching that neighbour A router that has a least cost path to a network and therfore does not form part of a loop since the router will not choose path that runs back through itself again Met when a neighbors RD is less than the local routers FD to the same destination network The total metic along a path to a destination network as advertised by an upsteam neighbour

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