EIGRP Stub Sim
Question
TUT Corporation has just extended their business. R3 is the new router from which they can reach all Corporate subnets. In order to raise network stableness and lower the memory usage and broadband utilization to R3, TUT Corporation makes use of route summarization together with the EIGRP Stub Routing feature. Another network engineer is responsible for this solution. However, in the process of configuring EIGRP stub routing connectivity with the remote network devices off of R3 has been missing.
Presently TUT has configured EIGRP on all routers in the network R2, R3, and R4. Your duty is to find and solve the connectivity failure problem with the remote office router R3. You should then configure route summarization only to the distant office router R3 to complete the task after the problem has been solved.
The success of pings from R4 to the R3 LAN interface proves that the fault has been corrected and the R3 IP routing table only contains two 10.0.0.0 subnets.
Answer and Explanation:
First we have to figure out why R3 and R4 can not communicate with each other. Use the show running-config command on router R3
Notice that R3 is configured as a stub receive-only router. The receive-only keyword will restrict the router from sharing any of its routes with any other router in that EIGRP autonomous system. This keyword will also prevent any type of route from being sent.
Therefore we will remove this command and replace it with the eigrp stub command:
R3#configure terminal
R3(config)#router eigrp 123
R3(config-router)#no eigrp stub receive-only
R3(config-router)#eigrp stub
R3(config-router)#end
Now R3 will send updates containing its connected and summary routes to other routers. Notice that the eigrp stub command equals to the eigrp stub connected summary because the connected and summary options are enabled by default.
Next we will configure router R3 so that it has only 2 subnets of 10.0.0.0 network. Use the show ip route command on R3 to view its routing table
R3#show ip route
Because we want the routing table of R3 only have 2 subnets so we have to summary sub-networks at the interface which is connected with R3, the s0/0 interface of R4.
There is one interesting thing about the output of the show ip route shown above: the 10.2.3.0/24, which is a directly connected network of R3. We can’t get rid of it in the routing table no matter what technique we use to summary the networks. Therefore, to make the routing table of R3 has only 2 subnets we have to summary other subnets into one subnet.
In the output if we don’t see the summary line (like 10.0.0.0/8 is a summary…) then we should use the command ip summary-address eigrp 123 10.2.0.0 255.255.0.0 so that all the ping can work well.
In conclusion, we will use the ip summary-address eigrp 123 10.2.0.0 255.255.0.0 at the interface s0/0 of R4 to summary.
R4>enable
R4#configure terminal
R4(config)#interface s0/0
R4(config-if)#ip summary-address eigrp 123 10.2.0.0 255.255.0.0
Now we jump back to R3 and use the show ip route command to verify the effect, the output is shown below:
(But please notice that the ip addresses and the subnet masks in your real exam might be different so you might use different ones to solve this question)
But in your real exam, if you see the line “10.0.0.0/8 is a summary,….Null0” then you need to summary using the network 10.0.0.0/8 with the command “ip summary-address eigrp 123 10.0.0.0 255.0.0.0” . This configuration is less optimize than the first but it summaries into 2 subnets as the question requires (maybe you will not see this case, don’t worry!).
The command “copy running-config startup-config” will not work so try using this command; just skip if it doesn’t work.
Other lab-sims on this site:
I meant dont use dumps..all outdated
If you want gns3 lab for mpls vpnv4, check this
https://garziadmostafa.wordpress.com/2017/08/21/mpls-vpnv4-configuration/
i want ccnp route labs for practice from digitaltut can not dowaloaded ,,,,from where i download please help me in exam 1 month req only please
Hello
The bit I struggle to understand is “10.0.0.0/8 is a summary,….Null0” if the route in routing tabel is already summarized as “10.0.0.0/8 is a summary,….Null0” and Null0 is garbage can- so how can we still summarize by using
to summary using the network 10.0.0.0/8 with the command “ip summary-address eigrp 123 10.0.0.0 255.0.0.0” .
why the route L (Local)
10.0.0.0/8 is variably subnetted, 3 subnets, 3 masks
D 10.0.0.0/8 [90/307200] via 10.2.3.4, 00:09:55, Ethernet0/0
C 10.2.3.0/24 is directly connected, Ethernet0/0
L 10.2.3.3/32 is directly connected, Ethernet0/0
172.16.0.0/32 is subnetted, 1 subnets
C 172.16.1.1 is directly connected, Loopback10
Hello
The bit I struggle to understand is “10.0.0.0/8 is a summary,….Null0” if the route in routing tabel is already summarized as “10.0.0.0/8 is a summary,….Null0” and Null0 is garbage can- so how can we still summarize by using
to summary using the network 10.0.0.0/8 with the command “ip summary-address eigrp 123 10.0.0.0 255.0.0.0”
Hi Everyone,
Can someone share valid dumps?
marekmarek062 gmail.com
Thanks
Can someone plz share valid dumps av exam in a month.
my email is patriccna at gmail.com
thanks
ip summary-address eigrp 123 10.2.0.0 255.255.240.0 (/20) is more optimal summary address.
Anyone who took the exam recently can confirm which are the SIMs in the exam?????
I’m gonna take it early next week.
Please respond asap.
Can someone please send me 539q dumps. My email is sarab.jeet11 at g mail dot com.
@unreal You are correct. This the optimal summary address according to theory. Tested and working.
Reference:
http://www.ciscopress.com/articles/article.asp?p=174107&seqNum=3
@unreal and Vox
After the configs, I still get 3 subnets as shown in below output. Can you please explain why?
10.0.0.0/8 is variably subnetted, 3 subnets, 3 masks
D 10.2.0.0/20 [90/2170112] via 10.2.3.4, 00:00:22, Serial2/0
C 10.2.3.0/24 is directly connected, Serial2/0
L 10.2.3.3/32 is directly connected, Serial2/0
Dear All,
I want to prepare for CCNP route kindly send me a valid dumps if you have please
{email not allowed}
www. {email not allowed}
@LR, see following URL
https://supportforums.cisco.com/t5/network-infrastructure-documents/local-host-routes-in-the-routing-table/ta-p/3115431
…nothing to worry about.
Hi All, Passed today 905 pts.
About 5 newer questions then on digital.tut.
On EIGRP Stub SIM there was no Null0 to summarise so I summarised 10.2.0.0 255.255.240.0 and…nothing happened. So I tried again with 10.2.0.0 255.255.0.0 and I had 2 separated subnets for 10.0.0.0 network so goal was achieved.
I learnt from digitaltut and IT Libraries dated 07.2017 (417q).
please Przemek, could you share your IT Libraries dump to my email nurwanreza79(at)gmail(dot)com.thanks in advance.
Hello can someone please tell me where can i download this lab? Thank you
Just made an EIGRP Stub lab…
h t t p s://file.io/NthIcI
The image of the router in the Sim I created above is: c7200-jk9s-mz.124-13b.image
it’s so weird how summarized the 10.2 network the most accurate way to do it is
ip summary-add eigrp 100 10.2.0.0 255.255.240.0 its gonna be /20 both works but this is the correct way of not killing some bits
501Qs
“please get the new real questions for CCNP route 300-101”
At below link:
Real valid questions, we 3 friends passed it.
Click Below Link:
501Qs
“please get the new real questions for CCNP route 300-101”
At below link:
Real valid questions, we 3 friends passed it.
Copy Below Link:
docs.google.com/document/d/1oVSLbsZ0nuxaw5tZJjKYjRPR_m0k9jsa23ZqrECLIb8/edit
@wax I am as surprised as you that Cisco exams accepted 10.2.0.0/16 as correct summary. This beats the foundational knowledge gotten from CCNA
Hi i would be very grateful if someone could give me a quick explanation as to why its 10.2.0.0 255.255.0.0 ? i was under the assumption it would be 10.2.0.0 0.0.255.255
@NAS85
https://www.cisco.com/c/en/us/td/docs/ios/iproute_eigrp/command/reference/ire_book/ire_i1.html
CTRL F and type summary-address
look at the options, it says mask and not wildcard mask, so 255.255.0.0 is the correct one.
@bluephoenix @NAS85,
Ack, just passed the exam. 255.255.0.0 does the trick, while anything like 255.255.240.0 (or a bit wider) does not sum the routes.
Guys wana do my route next help me with the latest dumps
Hello to all !
Please, can you send me the ccnp route last dumps ?
My address email is {email not allowed}
Thank you for your support !!!
Thank you bluephoenix, appreciate your help.
congrats on passing Anon, im hoping to take my exam before the end of this month, hopefully there isnt any new release of material before then. Im just going through the sim questions now, trying to understand each and every answer.
Hey friends, who took the exam recently? the labs are still:
PBR
Redistribution
OSPF
EIGRP
OSPFv3
??
Appreciate the help.
@cisco breaker they’re the same since before 300-101 v1 so yeah
I tried this SIM in UNL and in CPT and got a different results. In UNL “auto-summary”/”no auto-summary” is influence to route table, in CPT not. Also in UNL I have TWO directly connected local routes (/24 and /32) anyway, so no way to get ONLY TWO routes with EIGRP. I think this is an incorrect SIM or it SIM was made just for limitations of the exam test environment. What do you think?
Please send CCNP ROUTE exam s,o,m,e,l,i,n,u,x,d,u,d,e at the mail hosted by google
Just remove the commas for my real mail.
Please send it. thanks.
Please can you send me ccnp ROUTE EXAM,i’m having the exam this week?
I need your help
Please can you send me ccnp ROUTE EXAM,i’m having the exam this week?
I need your help
email:{email not allowed}
i passed the exam few days ago. the 255.255.240.0 didnt work at all for some reason and all routes were still showing up. 255.255.0.0 summary worked and only two subnets showed up on R3. one is for the connected and one for the summary address so total is two. i even tried the 255.0.0.0 and same results showed up so i went back to class B.
the copy run start didnt work niether the Wr mem.
A frame relay drag and drop where the CLI commands on the left and should be arranged in the right order. it was a point to multipoint frame relay. there were more commands than the required on the right so the right command should be chosen wisely.
Tarzan …..Are the labs still valid?
Tarzan —-and how about the dumps?
Labs still valid. i used the It library dumps where most of the question was there but note that many answer at the it library dumps are not correct and have to think about them or search for the right answer. if you read the official books you will definitely know the right answer. anyway the dumps were good. i had many new question but managed to answer them. i suggest also reading the Switch official guide before taking the Route exam as there were many AAA, SNMP and NTP questions. two new drag and drop AAA configuration and Frame Relay configuration.
I just took the exam and failed. You CANNOT use the /20 to summarize. It will not work. I had to curback /19 for it to work.
@Toba
Where do you get the it library dump from
i had this sim on my exam and summary-address 10.2.0.0 255.255.240.0 would not take. mask /16 will work on R4. if you 255.255.240.0 doesn’t work, try 255.255.0.0 and routing table will reflect 10.0.0.0 to have two subnets. good luck
thanks rr2 I was wondering the same thing but will use /16
I had the exam today. I applied the answer of this page in the lab but it doesn’t work. The “eigrp stub connected summary” appeared automatically when I applied the commando “eigrp stub”, but the routing table of R3 was always showing the 8 routes.
I tried different options but anyone worked. I’d like to know what’s is the correct solution.
Thanks.
@chchbrs
Did the ping work? Stub zone defaults to advertise connected and summary routes, so that is correct and normal (show run will disply “eigrp stub connected summary” in the output if you just type “eigrp stub” – at least in IOS 12.4). R3 will advertise its connected 172.16.1.0 /24 network once you remove the receive only command, which allows the ping to work.
The summarization should happen on R4’s interface that connects to R3 (R4’s s0/0 in the diagram above). You only want to advertise 1 10.0.0.0 route to R3 (the connected will show automatically), so you should switch to R4, interface s0/0, then enter the summarize command there. Neighbor change warning, then R3 will update its routing table and should only show the 2 – 10.0.0.0 routes( 1- connected & 1 advertised summary from R4).
just an FYI:
you can also use the command “eigrp stub connected” command on R3 to get the 172.16.1.0 /24 route to be advertised – don’t know if this has any effect on points, but it will keep R3 a stub and allow R3 to advertise the connected 172.16.1.0 /24 network and the ping will work.
I just did the exam last week and failed, i tried to execute the summary command without sucess.
Not sure if the right way but i used the auto summary on R3.
I tried this on GNS3 it works both either 10.2.0.0 /16 summarization or 10.2.0.0/20