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Exam 200-301 topic 1 question 1072 discussion

Actual exam question from Cisco's 200-301
Question #: 1072
Topic #: 1
[All 200-301 Questions]

SIMULATION
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Guidelines
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This is a lab item in which tasks will be performed on virtual devices

• Refer to the Tasks tab to view the tasks for this lab item.
• Refer to the Topology tab to access the device console(s) and perform the tasks.
• Console access is available for all required devices by clicking the device icon or using the tab(s) above the console window.
• All necessary preconfigurations have been applied.
• Do not change the enable password or hostname for any device.
• Save your configurations to NVRAM before moving to the next item.
• Click Next at the bottom of the screen to submit this lab and move to the next question.
• When Next is clicked the lab closes and cannot be reopened.


Topology
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Tasks
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IP connectivity and OSPF are preconfigured on all devices where necessary. Do not make any changes to the IP addressing or OSPF. The company policy uses connected interfaces and next hops when configuring static routes except for load balancing or redundancy without floating static. Connectivity must be established between subnet 172.20.20.128/25 on the Internet and the LAN at 192.168.0.0/24 connected to SW1:

1. Configure reachability to the switch SW1 LAN subnet in router R2.
2. Configure default reachability to the Internet subnet in router R1.
3. Configure a single static route in router R2 to reach to the Internet subnet considering both redundant links between routers R1 and R2. A default route is NOT allowed in router R2.
4. Configure a static route in router R1 toward the switch SW1 LAN subnet where the primary link must be through Ethernet0/1, and the backup link must be through Ethernet0/2 using a floating route. Use the minimal administrative distance value when required.

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[Removed]
Highly Voted 1 year, 5 months ago
Seems a lot of people didn't read the question. Note the part where it says "the company policy uses connected interfaces and next hops when configuring static routes except for load balancing or redundancy without floating static." This means you need to create *fully specified* routes, in the form "ip route <ip-address> <netmask> <interface> <next-hop>" So, answers: Task 1 R2(config)#ip route 192.168.0.0 255.255.255.0 e0/0 10.10.31.1 Task 2 R1(config)#ip route 0.0.0.0 0.0.0.0 e0/0 10.10.13.3 Task 3 R2(config)#ip route 172.20.20.128 255.255.255.128 10.10.1.1 (Note: We can't specify an interface here, as we're aiming for redundancy. We assume the address of L0 on R1 has been shared via OSPF.) Task 4 R2(config)#ip route 192.168.0.1 255.255.255.0 e0/1 10.10.12.2 R2(config)#ip route 192.168.0.1 255.255.255.0 e0/2 10.10.12.130 2
upvoted 14 times
tumajay
1 year ago
Task 4 R2(config)#ip route 192.168.0.0 255.255.255.0 e0/1 10.10.12.2 R2(config)#ip route 192.168.0.0 255.255.255.0 e0/2 10.10.12.130 2 you are routing to a subnet not a host
upvoted 1 times
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tumajay
1 year ago
the only correct answer i see here. pease read the instructions
upvoted 3 times
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rogi2023
Highly Voted 2 years, 1 month ago
1@R2: ip route 192.168.0.0.255.255.255.0 10.10.31.1 2@R1: ip route 0.0.0.0 0.0.0.0 10.10.13.3 3@R2 the key is just a SINGLE static route, so I will check the ospf if both links are involved between R1<->R2 and lear the subnet 10.10.13.0/24; if yes then: ip route 172.2020.128 255.255.255.128 10.10.13.1 4@R1: ip route 192.168.0.0.255.255.255.0 10.10.12.2 ip route 192.168.0.0.255.255.255.0 10.10.130 2 wr mem @ all R
upvoted 14 times
Peter_panda
2 years, 1 month ago
Excellent point regarding task #3!
upvoted 4 times
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ac89l
2 years ago
regarding task3, how could you route to 10.10.13.1 while it is not your next hop
upvoted 4 times
MDubYa913
1 year, 10 months ago
4. Configure a static route in router R1 toward the switch SW1 LAN subnet where the primary link must be through Ethernet0/1, and the backup link must be through Ethernet0/2 [using a floating route].<<<I believe this indicates configuring the secondary floating static route.
upvoted 1 times
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spazzix
1 year, 9 months ago
This is actually a really good packet tracer exercise. So long as the router has awareness to its next hop (in this case it needs to be explicit since a default route isn't allowed), it doesn't have to be a directly connected route. If I have two routes to A and then I set a route to B with next hop A, I will load balance traffic across my two A routes in order to get to B. In this case, whatever route configuration R2 has to get to 10.10.13.1, it will use to get to 172.20.20.128 via 10.10.13.1 e.g. if traffic to a destination of 10.10.13.1 would be load balanced across e0/2 & e0/1, it will be load balanced to a destination of 172.20.20.128
upvoted 1 times
spazzix
1 year, 9 months ago
and similarly, if the setup is such that e0/1 is the primary route and e0/2 is a floating route, then traffic to 172.20.20.128 will only go via e0/1 unless it goes down
upvoted 1 times
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Chichi69
1 year, 11 months ago
Hi Rogi, In step 3 we have been asked to configure a single static route but consider both redundant links. How do we consider both redundant links with a single route?
upvoted 1 times
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Secsoft
1 year, 9 months ago
I think, for step 3 we need to configure the ether channel first between R1 and R2 then need to apply the static route.
upvoted 2 times
Lukai
7 months, 3 weeks ago
Im thinking the same hmm
upvoted 1 times
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Lukai
7 months, 3 weeks ago
Actually, i've reconsidered about this question, it only mentions Ip connectivity and OSPF are configured, and doesnt state the cables are physically installed. Also this is between two routers not switches, so etherchannel might be not the best option here? (I could be wrong)
upvoted 1 times
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matass_md
Most Recent 9 months, 1 week ago
3. Configure a single static route in router R2 to reach to the Internet subnet considering both redundant links between routers R1 and R2. A default route is NOT allowed in router R2. What I think here is that we need to load balance the route so when we have same AD and METRIC (or Cost) then in the routing table we will have a two routes for the same destination , so the command should look like this : ip route 172.20.20.128 255.255.255.128 10.10.12.129 ip route 172.20.20.128 255.255.255.128 10.10.12.1 we will have same AD (1) same Metric then the router will load balance the two links . We can't make a etherchannel because in Task 4 we are ask to make a primary and a backup route , plus in etherchannel Layer 3 we would use only 1 IP on each side . This is what I'm thinking , please comment and help others . Cheers.
upvoted 1 times
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Essohjay
9 months, 3 weeks ago
R1# conf t R1(config)# ip route 192.168.0.1 255.255.255.0 10.10.12.2 R1(config)# ip route 192.168.0.1 255.255.255.0 10.10.12.130 2 R1(config)# 0.0.0.0 0.0.0.0 10.10.13.3 R1(config)#exit  R1# write memory  R2# conf 1 R2(config)# ip route 192.168.0.1 255.255.255.0 10.10.31.1 R2(config)# ip route 172.20.20.128 255.255.255.128 10.10.12.1 R2(config)# ip route 172.20.20.128 255.255.255.128 10.10.12.129 R2(config)#exit  R2# write memory
upvoted 1 times
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Amir1909
10 months, 2 weeks ago
- R1: ip route 0.0.0.0 0.0.0.0 10.10.13.3 - R2: ip route 172.2020.128 255.255.255.128 10.10.1.1 - R2: ip route 192.168.0.0.255.255.255.0 10.10.31.1 - R1: ip route 192.168.0.0.255.255.255.0 10.10.12.2 - R1: ip route 192.168.0.0.255.255.255.0 10.10.130 2 Copy ru sta
upvoted 1 times
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kalitwol
1 year, 2 months ago
i think if r1 and r2 are ospf neighbors, r2 will have some routes that can be used as the next hop for the single static route.....such that you can use the L0 interface as the next hop, traffic will be load-balanced between the two links
upvoted 1 times
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picho707
1 year, 5 months ago
Task 1 R2(config)#ip route 192.168.0.0 255.255.255.0 10.10.31.1 Task 2 R1(config)#ip route 0.0.0.0 0.0.0.0 10.10.13.3 Task 3 R2(config)#ip route 172.20.20.128 255.255.255.128 10.10.1.1 Task 4 R1(config)#ip route 192.168.0.0 255.255.255.0 10.10.12.2 R1(config)#ip route 192.168.0.0 255.255.255.0 10.10.12.130 2
upvoted 2 times
picho707
1 year, 5 months ago
The more I read task 2, I keep thinking that the correct route is as shown below due to the diagram (Label Internet 172.20.20.128/25) R1(config)#ip route 172.20.20.128 255.255.255.128 10.10.13.3
upvoted 1 times
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picho707
1 year, 6 months ago
does anyone know if the TAB command is allowed in the simulation environment?
upvoted 1 times
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Ineng
1 year, 8 months ago
For TASK 3, Can we use loop back address of R1 as next hop address? for example : ip route 172.20.20.128 255.255.255.128 10.10.1.1? I tried it on packet tracer and it work
upvoted 2 times
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Ineng
1 year, 8 months ago
For TASK 3, Can we use loop back address of R1 as next hop address? for example : ip route 172.20.20.128 255.255.255.128 10.10.1.1? I tried it on packet tracer it didnt work.
upvoted 1 times
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SudipSen
1 year, 8 months ago
Anyone tried this lab in packet tracer ? I tried from scratch. I understood well all the answers but I am unable to configure the SW1 properly ..
upvoted 1 times
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Cynthia2023
1 year, 9 months ago
what I wrote is below. #Task 1 #R2 ip route 192.168.0.0 255.255.255.0 10.10.31.1 #Task 2 #R1 ip route 0.0.0.0 0.0.0.0 10.10.13.3 #Task 3 #R2 ip route 172.20.20.128 255.255.255.128 10.10.12.1 ip route 172.20.20.128 255.255.255.128 10.10.12.129 2 #Task 4 #R1 ip route 192.168.0.0 255.255.255.0 10.10.12.2 ip route 192.168.0.0 255.255.255.0 10.10.12.130 2 The solution to task 3, configure a single static route while considering redundant links, we can use a floating static route. A floating static route is a backup route that has a higher administrative distance than the primary route. It's how we can configure a single static route with redundancy using a floating static route on router R2.
upvoted 6 times
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im82
1 year, 10 months ago
Hi, I passed my exam yesterday. more than 80% of the questions are present here. I had 103 questions. Good luck everyone.
upvoted 11 times
kat1969
1 year, 8 months ago
were the consensus answers correct?
upvoted 1 times
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some0n3
1 year, 10 months ago
about task 3: I think we should use the L0 on R1 as the next hop when configuring the single static route on R2.
upvoted 3 times
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[Removed]
1 year, 10 months ago
At step 3, don't we need to configure two static routes (one per link)? I'm just wondering
upvoted 1 times
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no_blink404
1 year, 11 months ago
I am no means an expert, but this would be my answer: R2) ip route 192.168.0.0 255.255.255.0 10.10.31.1 #STEP 1# ip route 172.20.20.128 255.255.255.128 10.10.12.1 #STEP 3# copy run start R1) ip route 0.0.0.0 0.0.0.0 10.10.13.3 #STEP 2# ip route 192.168.0.0 255.255.255.0 e0/1 #STEP 4# ip route 192.168.0.0 255.255.255.0 10.10.12.130 2 #STEP 4# copy run start
upvoted 6 times
HM01
1 year, 10 months ago
Router#1 step 4 can be done like this. correct me if i'm wrong Router(config)#ip route 192.168.0.0 255.255.255.0 10.10.12.2 Router(config)#ip route 192.168.0.0 255.255.255.0 10.10.12.130 2
upvoted 2 times
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Chichi69
1 year, 11 months ago
Correct. Step 3 the next hop is 10.10.12.1
upvoted 1 times
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Shabeth
1 year, 11 months ago
correct
upvoted 1 times
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Keba889
2 years ago
shouldn't the 2nd route for 4@R1 be: ip route 192.168.0.0 225.255.255.0 10.10.12.130 2 (.12 in ip address is missing) Thanks
upvoted 4 times
studying_1
2 years ago
Yes, AD should be 2 not 3
upvoted 1 times
Parry089
1 year ago
WHY SO?
upvoted 1 times
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