ESET315_hwk9_due_April19_-_Tagged

pdf

School

Texas A&M University *

*We aren’t endorsed by this school

Course

315

Subject

Computer Science

Date

Feb 20, 2024

Type

pdf

Pages

Uploaded by BaronWren4759

ESET 315 – Hwk9 due April 19 Name: __________________________________________________________________ For your reference, here is a good summary about Spanning Tree algorithm: The Spanning Tree Protocol (from Local Area High Speed Network, Dr. Sidnei Feit) If redundant LAN paths are created, some must be placed in backup mode. If these paths are needed to cope with a network failure, they must be upgraded to active status. Manually controlling the topology of a big, complicated LAN can be a tough job – especially since several administrators may be allowed to add and remove equipment and make parameter changes independently. It is very desirable to have a protocol that can control LAN topology automatically. The IEEE 802.1 D Spanning Tree Protocol (STP) was designed to do this. The protocol enables the bridges in a LAN to perform the following actions: - Discover and activate an optimal tree topology for the LAN, without loops - Detect failures and subsequent recoveries, and automatically update the topology so that the “best” tree structure possible is selected at any given time. The topology of the LAN automatically is calculated from a set of bridge configuration parameters that are established by administrators . The tree will be the “best” one that can be constructed using these parameters. The 802.1D STP has won strong acceptance in the marketplace. This protocol always has been popular for Ethernet LANs, but it has been designed to operate with any type of LAN MAC protocol, not just Ethernet. Question 1 (6 points): 1 – Let’s review what a Bridge Protocol Data Unit (BPDU) is. If your switch receives the following BPDU, what does each field mean? 10.3.23 10 means the _______________________________________________ 3 means the________________________________________________ 23 means the _______________________________________________ 2 – Which standardization body specifies the Spanning Tree Protocol and the format of the Bridge Protocol Data Unit (BPDU) messages? What is the name of the standard? 1

Question 2 –(15 points) (9 points) In the figure below, the bridge with ID 55 has five ports. Listed on the diagram near each port is the best configuration message received and the link speed for each port. If the cost associated for a link is the New IEEE Cost: Speed New IEEE Cost 10 Gbps 2 1 Gbps 4 100 Mbps 19 10 Mbps 100 identify what the spanning tree calculation will decide is the: i) Root port: _______________ ii) Designated port(s): _______________ iii) Blocked port(s): _________________ iv) Forwarding port(s): ________________ v)The best configuration message for P1:___________, P2: ________, P3: __________, P4:_________; P5:___________ 3 – (6 points) Draw approximately how switches in the Spanning Tree from Problem 2 will look like. Make sure to show the root switch, the designated bridges and blocked ports. 2

Question 3 (21 points): (9 points) The next picture shows a bridge with ID 100 and its five ports. Listed on the diagram near each port is the BPDU received and the link speed for each port. If the cost associated for a link is the New IEEE Cost: Speed New IEEE Cost 10 Gbps 2 1 Gbps 4 100 Mbps 19 10 Mbps 100 identify what the spanning tree calculation will decide is the: i) root port:_____________ ii) designated port(s):______________ iii) blocked port(s):_____________ iv) forwarding port(s):______________ v) the best configuration message for each port, for this switch: P1: ____________, P2: _______________ P3: ____________, P4: _______________ P5: _____________ 20.2.9 0 15.40.7 7 10.21.50 10.10.6 0 10.20.5 3 Port 1, 10 Gbps Port 2, 10 Gbps Port 3, 1 Gbps Port 4, 1 Gbps Port 5, 1 Gbps SW ID: 100 3

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

d) (6 points) Create a rough representation of the new spanning tree that you have just created. Make sure to draw and identify the root switch of the spanning tree, the designated bridge that forwards BPDUs to Switch ID 100, and the bridges to which Switch ID 100 is a designated bridge. c) (6 points ) If root port fails in the previous problem what will be the new root port ? New root Port:_________ New configuration mesage for switch 47: ___________ Write the best configuration messages for this new topology. P1:___________ P2:___________ P3:___________ P4:___________ P5:___________ 4

Question 4 (12 points) 1. For the given IP addresses and subnet masks, determine: i. the subnet number of this IP address ii. the first address iii. the last address iv. the broadcast address v. the class vi. the number of usable IP addresses a) 8.162.66.16 255.255.248.0 b) 50.5.152.59/14 5

Question 5 ( 18 points) Distance vector routing – routing tables (IP addresses and default route) 1. In the figure below, circle the subnets. Then let’s assume the Routers are configured with RIP routing protocol. List below what the routing tables in each router, respectively, would be. In this case, you will always specify RIP and the metric is number of hops. At time 0, before you enabled RIP routing on your routers: Router 1’s table: Destination Subnet Subnet Mask Metric Outgoing Interface IP address of next hop router Router 2’s table: Destination Subnet Subnet Mask Metric Outgoing Interface IP address of next hop router 6

Your preview ends here

Eager to read complete document? Join bartleby learn and gain access to the full version

Access to all documents
Unlimited textbook solutions
24/7 expert homework help

At time 30sec, after the first RIP advertisement is sent your routers: Router 1’s table: Destination Subnet Subnet Mask Metric Outgoing Interface IP address of next hop router Router 2’s table: Destination Subnet Subnet Mask Metric Outgoing Interface IP address of next hop router (Also, for the exam, make sure to practice the MAC tables and learning bridges problem) 7

Related Documents

CNT 125 Online - Subnetting Problems Lab.docx

CNT 125 Online - Subnet Planning Lab.docx

json_to_nfc.py

Topic4_Practice Questions_Solutions.pdf

HW4_Solution.pdf

HW1_Solution.pdf

ESET315_Hwk8_Due_April10.docx

LaurenElsey_ElevatorPitch.docx

ESET315_Lab8.pdf

ESET315HW7.pdf

Exam2Spring22.pdf

Lab_9_RIP_Routing_Rev_IR_-_Tagged.pdf

Recommended textbooks for you

C++ Programming: From Problem Analysis to Program...

Computer Science

ISBN:9781337102087

Author:D. S. Malik

Publisher:Cengage Learning

C++ for Engineers and Scientists

Computer Science

ISBN:9781133187844

Author:Bronson, Gary J.

Publisher:Course Technology Ptr

Systems Architecture

Computer Science

ISBN:9781305080195

Author:Stephen D. Burd

Publisher:Cengage Learning

Programming Logic & Design Comprehensive

Computer Science

ISBN:9781337669405

Author:FARRELL

Publisher:Cengage

Fundamentals of Information Systems

Computer Science

ISBN:9781337097536

Author:Ralph Stair, George Reynolds

Publisher:Cengage Learning

Enhanced Discovering Computers 2017 (Shelly Cashm...

Computer Science

ISBN:9781305657458

Author:Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. Campbell

Publisher:Cengage Learning

SEE MORE TEXTBOOKS

Recommended textbooks for you

C++ Programming: From Problem Analysis to Program...
Computer Science
ISBN:9781337102087
Author:D. S. Malik
Publisher:Cengage Learning
C++ for Engineers and Scientists
Computer Science
ISBN:9781133187844
Author:Bronson, Gary J.
Publisher:Course Technology Ptr
Systems Architecture
Computer Science
ISBN:9781305080195
Author:Stephen D. Burd
Publisher:Cengage Learning
Programming Logic & Design Comprehensive
Computer Science
ISBN:9781337669405
Author:FARRELL
Publisher:Cengage
Fundamentals of Information Systems
Computer Science
ISBN:9781337097536
Author:Ralph Stair, George Reynolds
Publisher:Cengage Learning
Enhanced Discovering Computers 2017 (Shelly Cashm...
Computer Science
ISBN:9781305657458
Author:Misty E. Vermaat, Susan L. Sebok, Steven M. Freund, Mark Frydenberg, Jennifer T. Campbell
Publisher:Cengage Learning