Question 1:
Q1. Simulates the switched network of USQ College.
Assuming all links are of the same cost, answer the questions in part A and fill in the table in part B.
Part A
Why are links L1 and L2 are both active? Will there be any loops in this case?
Part B
Determine the status of the links, and role of the ports.
Fill in the table. Mark all entries as NA if they are not used in determining the status of a link or the role of a port. L9 and L10 has been done for you.
|
Link
|
Link status
|
Port role
|
|
Active
|
Cheapest
path cost
|
Next hop
BID lower
|
Next hop
PID lower
|
Port in
switch
|
Root / designated or non-designated
|
Ports of
Root
switch
|
Link active ,
link leads to
root switch
|
Cheaper to
root
switch
|
Next
hop BID
lower
|
Next
hop PID
lower
|
|
o
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
L4
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
LS
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
L6
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
L7
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
L9
|
yes
|
yes
|
|
yes
|
55
|
root
|
no
|
|
no
|
NA
|
^,A
|
|
SI
|
designated
|
no
|
|
yes
|
NA
|
^,A
|
|
LIO
|
no
|
yes
|
|
1'0
|
55
|
no
|
no
|
|
no
|
NA
|
^,A
|
|
Si
|
designated
|
nc
|
|
|
VA
|
|
|
LI1
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
I
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
|
Question 2:
No routing protocol such as RIP, EIGRP, OSPF is used in this question.
Part A
Given:
1. IPv4 is used.
2. PC11 belongs to VLAN 10 using 192.168.10.0 network.
3. PC21 belongs to VLAN 20 using 192.168.20.0 network.
4. PC11, PC21 use DHCP provided by GR1.
5. GR1 performs inter-VLAN routing using a single link.
6. No routing protocols is used.
7. PC11 and PC21 can ping each other.
Implement the part network of USQ High School.
Part B
Given:
1. IPv4 is used.
2. PC12 belongs to VLAN 10.
3. PC12 uses static address 192.168.10.131/24.
4. PC22 belongs to VLAN 20.
5. PC22 use static address 192.168.20.132/24.
6. GR2 performs inter-VLAN routing using a single link.
7. No routing protocols is used.
8. PC12 and PC22 can ping each other.
Implement the part network of USQ High School.
Part C
Given:
1. GR2, SB, PC12 and PC22 are the same as in Part B.
2. PC31, PC32 uses DHCP provided by wireless WRC using 192.168.30.0/24.
3. WRC (and PC31, PC32) belongs to VLAN 20.
4. PC31, PC32 can ping each other and PC12, PC22.
5. PC12, PC22 can ping each other but not PC31, PC32.
Implement the part network of USQ High School. Submit your Packet Tracer file.
Part D
Given:
1. GR1, SA, PC11 and PC12 are the same as in Part A.
2. GR2, SB, PC12 and PC22 and WRC, PC31 and PC32 are the same as in Part C
3. The two links between SA and SB is a LACP EtherChannel.
4. PC31, PC32 can ping each other and PC11, PC12, PC21 and PC22.
5. PC11, PC12, PC21 and PC22 can ping each other but not PC31, PC32.
Implement the part network of USQ High School. Submit your Packet Tracer file.
Part E
Given:
1. Except RUSQ and SUSQ, all are the same as in part D.
2. RUSQ, SUSQ, GR1 and GR2 formed a LAN.
3. GR1 and GR2 participated in HSRP and served as a group of routers providing gateway service to all PCs.
4. GR1 and GR2 participated in GLBP and served as a group of routers providing gateway service to RUSQ in reaching all PCs.
5. PC31, PC32 can ping all PCs and lo1 of RUSQ.
6. All other PCs can ping each other and lo1 of RUSQ except PC31 and PC32.
Implement the network of USQ High School.
Part F
Explain, as in part E, why PC31 and PC32 can ping other PCs but others cannot ping them.
Question 3:
Part A
Bill Gateway proposed EtherRouter which uses an EtherChannel to connect to routers participating in FHRP such as GLBP to provide load balancing and increase the efficiency of the traffic flow.
He claimed that
- EtherChannel can use all links (Link1, Link 2 in LAN 1) to reach all FHRP gateway routers (R1 and R2 for LAN 1) at the same time;
- All FHRP gateway routers (R1 and R2 for LAN 1) will forward traffic if load balancing is enabled;
- A LAN (LAN 1) which attached to the Internet uses EtherRouter may increase the volume of data in transition by using more links and routers.
- With two links in the EtherChannel and two FHRP routers, the increase in traffic volume can be up to almost two times.
In less than 500 words, explain why EtherRouter is feasible or not.
If it is feasible, implement the network shown above using Packet Tracer.
If not, suggest another way to replace EtherRouter.
Part B
DHCP for IPv6 has a SLAAC mode.
Explain whether we can achieve SLAAC mode for IPv4 DHCP or not.