EIGRP OSPF Redistribution Sim
Question
Answer and Explanation:
First we need to find out 5 parameters (Bandwidth, Delay, Reliability, Load, MTU) of the s0/0/0 interface (the interface of R2 connected to R4) for redistribution :
R2#show interface s0/0/0
Write down these 5 parameters, notice that we have to divide the Delay by 10 because the metric unit is in tens of microsecond. For example, we get Bandwidth=1544 Kbit, Delay=20000 us, Reliability=255, Load=1, MTU=1500 bytes then we would redistribute as follows:
R2#config terminal
R2(config)# router ospf 1
R2(config-router)# redistribute eigrp 100 metric-type 1 subnets
R2(config-router)#exit
R2(config-router)#router eigrp 100
R2(config-router)#redistribute ospf 1 metric 1544 2000 255 1 1500
Note: If the delay is 20000us then we need to divide it by 10, that is 20000 / 10 = 2000
Note: “usec” here means microsecond (which is 1/1000 milliseconds). According to this link: http://www.cisco.com/en/US/tech/tk365/technologies_white_paper09186a0080094cb7.shtml#eigrpmetrics: “The delay as shown in the show ip eigrp topology or show interface commands is in microseconds”)
For R3 we use the show interface fa0/0 to get 5 parameters too
R3#show interface fa0/0
For example we get Bandwidth=100000 Kbit, Delay=1000 us, Reliability=255, Load=1, MTU=1500 bytes
R3#config terminal
R3(config)#router ospf 1
R3(config-router)#redistribute eigrp 100 metric-type 1 subnets
R3(config)#exit
R3(config-router)#router eigrp 100
R3(config-router)#redistribute ospf 1 metric 100000 100 255 1 1500
Finally you should try to “show ip route” to see the 172.16.100.1 network (the network behind R4) in the routing table of R1 and make a ping from R1 to this network.
Note: If the link between R2 and R3 is FastEthernet link, we must put the command below under EIGRP process to make traffic from R1 to go through R3 (R1 -> R2 -> R3 -> R4), which is better than R1 -> R2 -> R4.
R2(config-router)# distance eigrp 90 105
This command sets the Administrative Distance of all EIGRP internal routes to 90 and all EIGRP external routes to 105, which is smaller than the Administrative Distance of OSPF (110) -> the link between R2 & R3 will be preferred to the serial link between R2 & R4.
A reader on our site has a closer explanation for the “distance eigrp 90 105” command so we quote it here for your reference:
|
The “distance” refers to the administrative distance of the routes provided by a given routing process. By default, internal (which means non-redistributed) EIGRP routes are given an administrative distance of 90 while external (redistributed from another routing process) EIGRP routes are given an administrative distance of 170. The default administrative distance of OSPF is 110. The administrative distance measures the “distance from the truth” and tells the router which routes are more trustworthy. Lower administrative distance = more trustworthy. For this reason, connected routes have an administrative distance of 0. They are the MOST TRUSTWORTHY, because they are physically connected to the router. When making a decision about which route to install in the routing table, the router looks at administrative distance first. The metric (or cost) is only considered if two routes have the same administrative distance. In this case, R2 will learn about R4’s loopback network from both R4 and R3. The route from R4 will be in OSPF (admin distance of 110) because R2 is also running OSPF while the route from R3 will be an external EIGRP route (administrative distance of 170 by default). Since the OSPF route has a lower administrative distance, it will get placed in R2’s routing table and the R3-provided route will be ignored. This is not optimal, since the path through R3 is a faster, more reliable path. To fix this, we change the administrative distance of external EIGRP routes at R2 by using the “distance eigrp 90 105” command. This sets the administrative distance of internal EIGRP routes to the default of 90 and changes the administrative distance of external EIGRP routes to 105 (less than that of OSPF routes). Now, when R2 learns of the loopback network from R4 and R3, it will install the now lower administrative distance external EIGRP route from R3 and our traffic from R1 will take the faster path. |
Note: Please check the OSPF process numbers first before typing these commands.
If you want to have a closer look at this sim and understand more about the “distance eigrp” command, please read my OSPF EIGRP Redistribute Lab in GNS3.
Other lab-sims on this site:
@Anonymous, congrats on your awesome score.
Please confirm, you had eigrp stub lab (https://www.digitaltut.com/route-eigrp-stub-sim)?
Others have recently reported OSPF Sim (https://www.digitaltut.com/route-ospf-sim); but you did not get this one?
What simlet(s)? Many are reporting OSPF Evaluation Sim.
Any drag & drops?
Sorry for so many question; I take my exam very soon and am getting nervous.
Any additional insight you can provide is greatly appreciated.
Thanks in advance.
Redistribution sim: when looking for the load , which value do you use? txload or rxload both?
Hi guys, I just want to ask FOR THOSE WHO ALREADY TOOK THE EXAM
does it really show a wrong OSPF process of 1? and you cannot change it? (like what we have downloaded)
or you need to create a OSPF process of 23 and 24?
Thanks guys and also how do you get the load when theres TX and RX load?
Sorry guys dont mind the questions. I thought it was process ID but areas 23 and 24 XD
Do we add router ospf 1 or router ospf 24?
please help am confuse
arrgg exam soon and getting more confused .
redistribute eigrp 100 metric-type 1 subnets
Is the 100 part of the above the eigrp process id which can be found in show run ?
Yes, thats the EIGRP AS number (process ID is OSPF).
So you are telling it to redistribute EIGRP 100 into OSPF 1.
Remember to use the subnets command.
I’m writing today and i doubt if I’m ready. I’m confident about all simulations but drag and drops are kicking my behind.
Can anyone who recently wrote tell me which drag and drops should I expect??
failed
Dears,
I failed today 7xx/1000.I studied 149+41(takwa)+183+Labs.But in my exam there was about 10-15 new f*king questions.
All digitaltut lab are available.
regards.
@non-name, you forgot Waleed’s 15q file. You will find his link through previous pages of the “share your ROUTE v2.0 experience” page…
hello guys ,can someone send me the valid dumps for 300-101
i’m writting my exam within four days.
tsafongromuald at gmail dot com
regards
can some one plz tell me what are the SIMULATION in route exam …plz help me iam writing in a couple of days
Hi, can someone explain why in the 1st CASE “metric-type 1” is used in the redistribute command on R3. That makes traffic to choose not shortest path (Ethernet Area 34) when coming back from R4 to R1.
I think it should be just “redistribute eigrp 100 subnet” because when traffic going back would choose Serial area 24 because it would prefer E1 route over E2.
Right?
PLEASE READ********
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to put the distance eigrp 90 105 command
do you need to go into eigrp process id first ?
Eg
#conf t
#router eigrp 100
#distance eigrp 90 105
or is it just in configuration mode ?
Hope that makes sense
#conf t
#router eigrp 100
#distance eigrp 90 105
did that , it was not the problem if u read please stay abreast
I was wondering as starting to doubt what i did the last time i attempted the exam
Hi Everyone,
Please share this dumps 149q+41q+15q or any latest valid dumps if available.
san242721 @ gmail com
Hi All,
I give my exam on 23rd of this month. On sims after implementing the configuration, copy running start-up command is not worked for 2 sims. I claimed same with exam instructor. But He is trying to call pearson guy to check but my exam time was on going. It was nightmare. Finally my time got over. I got 690 marks. My two sims EIGRP OSPF Redistribute and OSPF sim worked fine. but unable to save it. My two SIMS almost 200 marks lost there itself with their mistake. I suppose to get 890 marks. Could you please tell anyone how to claim if there’s mistake ? and also confirm what is the marks for each sim ??
hello everyone
please can anyone send me CCNP route update dump.
here is my email
{email not allowed}
i need the update dumps so much
thanks
w a h e e d f a c e b o o k @ g m a i l . c om
Hi ,, i have my exam in two weeks time , can anyone send me valid dumps, the 149+41+15 questions.. email priscakash@(gmail).(com)
I passed the 300-101 exam today with an 895. 149+41+15 is still valid. There were new questions in there but not enough to fail you if you know everything in these three dumps. I got a couple of BGP questions that were not in here.
All labs are still valid.
Good luck.
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Thanks for response
There are some new questions as well in the exam, almost 10 new question, with some new drap and drop… Does anyone have that
So once you have completed this in the exam you do show ip route on R1 to see the 172.16.100.1 network (the network behind R4) in the routing table of R1 and make a ping from R1 to this network.
what about telnet or trace route to test further ?
PLZ SEND ME DUMPS AT {email not allowed}
plz fox send me valid dumps at( murwan.ahmed95 @ gmail com)
am palnning to take the exam next week ……
thanks guyz
regards
Just failed the exam even nailing all labs they are pretty easy. Questions are all new just a few questions that are mentionend here. i failed with 710 out of 790.
@Gosh – those new questions are totally new? have you seen the new 18q from page 160 in the shared section?
{email not allowed}
@Gosh
can u please tell me about the labs which one you got and r they the same or thiere were changes please help my iam writing my exams in 2 days
Hi TheOnlyPrincess,
Took the exam today and failed 770. Share me your 160 dumps and I will check if new questions are
Please forward up dated dump to this email usmaco @ yahoo dot com
Thank you in Advance
please please share updated dumps to this email nzimande.worldwide @ gmail.com thank you in advance.
Hi all gigs
is the below are the labs that is in the exam ????????????????????/
eigrp ospf redistribution
ipv6 ospf virtual link
ospf
ospf evaluation
PBR
Hi everybody!
I’ve just noticed that doing this lab like it’s explained in the solution we have ASYMMETRIC routing!! is this expected?
The way from R1 to R4 will be R1 -> R2 -> R4, that’s OK.
But the way back from R4 to R1 will be R4 -> R3 -> R2 -> R1
And that’s because when we configure redistribution of EIGRP to OSPF on both R2 and R3, we see that metric is better in the redistribution of R3 since the link R3-R4 is FastEthernet and has better bandwith and delay than the link betwen R2-R4. So R4 chooses R3 in the way back to 192.168.1.0 as we can see in the routing table:
R4#sh ip route
…
Gateway of last resort is not set
172.16.0.0/24 is subnetted, 1 subnets
C 172.16.100.0 is directly connected, Loopback0
C 192.168.4.0/24 is directly connected, FastEthernet0/0
O E1 192.168.1.0/24 [110/30] via 192.168.4.2, 00:02:35, FastEthernet0/0 <—
O E1 192.168.2.0/24 [110/30] via 192.168.4.2, 00:02:35, FastEthernet0/0
C 192.168.3.0/24 is directly connected, Serial0/0
R4#
Does anybody else noticed that? what do you think? is correct?
Thanks in advance! :)
Plz send dump to red.digitaltut @ gmail . com
Hi Guys. I prepare the ccnp exam. Please send me latest dumps. I badly need it.
Send me here:
nathaliemomo95(@)(yahoo)(dot)(fr)
Thank you so much guys
hi…plz tell which dumps r valid
any person who gave exam today…plz update here..
hi Guys,
I gonna pass mine this Friday , can some one share with me the new dump here : {email not allowed};
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I still don’t see the point in “distance eigrp 90 105”.
Why is going R1 -> R2 -> R3 -> R4 better than going R1 -> R2 -> R4.
R1 -> R2 -> R3 -> R4 = 2 x Serial + 1 Ethernet.
R1 -> R2 -> R4 = 2 Serial.
Thanks Anon, I do not catch the point, too.
First Option(R1 -> R2 -> R3 -> R4):
R1 to R2 BW = 1544Kbps
R2 to R3 BW = 1544Kbps
R3 to R4 BW = 100Mbps ( assuming its a fast ethernet link)
TOTAL BW = 103.088Mbps
Second Option (R1 -> R2 -> R4)
R1 to R2 BW = 1544Kbps
R2 to R4 BW = 1544Kbps
TOTAL BW = 3.088Mbps
One of the requirements is that all traffic must use the shortest path that provides the greatest BW.
103.088Mbps is greater than 3.088Mbps which also means it’s much faster.
Hope this helps!
But all Serial links are the same bottleneck.
So in my opinion it is not a better way but if it have to in the exam – OK.
First serial is a bottleneck R1 to R2 BW = 1544Kbps so it does not make any difference that we would have FastEthernet with 100Mbs or another serial with 1544Kbps, since first one is always 1544Kbps and traffic can not go faster over it, no matter what is next. For me it makes no sense to manipulate that path.