ICND2 Assessment Lab

Hi,
I could not open this lab though i placed downloaded IOS, placed it in gns3/images and loaded it to gns3. Error message is ***error :209 unable to start VM instance ghost c3640-jk9s-mz124.bin-localhost-ghost Is this becos the IOS corrupt?

help will be appreciated!

Thanks,
Andy

Hi Renee,

This is the most beautiful LAB for a CCNA and even higher. First time I had such a mega LAB of configuration and troubleshooting. Your step by step tasks are a sure guide to real exam.
Thanks

Thanks Nikhil,

Glad you like it, I might add some more in the future and I will definitely add a couple later for the CCNP ROUTE or TSHOOT.

good luck!

Rene

i dont think you have task ospf hello timers in ccna

Hey Rene,

I can't export the page/instructions to PDF... it throws up an error about an invalid .jpg

The exact message is: "TCPDF error: Missing or incorrect image file: images/stories/icnd2 assessment lab.jpg"

Any idea if you can fix this?

Thanks a mil!

The PDF plugin has been bothering for ages, with the new website it's gone and i'm not sure if I want to introduce it again

do you feel I should add it, is it easier?

If provide authentication between the routers below and no authentication between Luke and Chewbacca you will not have full adjacency in OSPF?
• Configure clear-text authentication between Router Luke and Hansolo.
• Configure MD5 authentication between Router Hansolo and Chewbacca.

OSPF authentication is always between two routers. It's fine to mix MD5, clear-text or no authentication.

Not a best practice but it's possible

Hi Rene,
for using reliability as a metric
shouldnt K5 must be 1.
so
instead of, metric weights 0 1 0 1 1 0
it should be, metric weights 0 1 0 1 0 1.

http://www.cisco.com/en/US/docs/ios/12_2/iproute/command/reference/1rfeigrp.html#wp1023638

Thanks
Shoeb

Hi Shoeb,

This should be the correct list for K-values:

metric weights TOS K1 K2 K3 K4 K5

K1 = bandwidth
K2 = load
K3 = delay
K4 = reliability
K5 = MTU

0 1 0 1 1 0 = bandwidth, delay, reliability.
0 1 0 1 0 1 = bandwidth, delay, MTU.

Rene

EIGRP/IGRP also tracks the smallest Maximum Transmission Unit (MTU) along each route, although the MTU is not used in the composite metric calculation.
Ref TCP/IP, Volume I, Jeff Doyle.

Cisco IOS IP Command Reference, Volume 2 of 3: Routing Protocols, Release 12.2

metric weights (EIGRP)
To allow the tuning of the IGRP or Enhanced Interior Gateway Routing Protocol (EIGRP) metric calculations, use the metric weights command in router configuration mode. To reset the values to their defaults, use the no form of this command.

metric weights tos k1 k2 k3 k4 k5

no metric weights

Syntax Description
tos
Type of service must always be zero.

k1k2 k3 k4 k5
Constants that convert an IGRP or EIGRP metric vector into a scalar quantity.

Defaults
tos: 0

k1: 1

k2: 0

k3: 1

k4: 0

k5: 0

Command Modes
Router configuration

Command History
Release Modification
10.0
This command was introduced.

Usage Guidelines
Use this command to alter the default behavior of IGRP routing and metric computation and allow the tuning of the IGRP metric calculation for a particular type of service (ToS).

If k5 equals 0, the composite IGRP or EIGRP metric is computed according to the following formula:

metric = [k1 * bandwidth + (k2 * bandwidth)/(256 - load) + k3 * delay]

If k5 does not equal zero, an additional operation is performed:

metric = metric * [k5/(reliability + k4)]

Usage Guidelines
Use this command to alter the default behavior of IGRP routing and metric computation and allow the tuning of the IGRP metric calculation for a particular type of service (ToS).

If k5 equals 0, the composite IGRP or EIGRP metric is computed according to the following formula:

metric = [k1 * bandwidth + (k2 * bandwidth)/(256 - load) + k3 * delay]

If k5 does not equal zero, an additional operation is performed:

metric = metric * [k5/(reliability + k4)]

Hi,
why do the IP masks on the picture not match the same ones in the config files?

You are right I made a mistake, I used /24's in the config. It doesn't matter much but maybe I should change it.

Hi Rene,
your labs are awesome, I really appreciate your job, thank you so much!
One more question, what is the best practice about changing the Router-ID? Do I have to create a Loopback interface with the same IP address before changing the Router-ID? When I issued the command "sh ip protocol" on the routers Luke or Chewbacca I saw that:
Routing Information Sources:
Gateway Distance Last Update
22.22.22.22 110 16:15:13
1.1.1.1 110 16:16:42
3.3.3.3 110 18:39:31
But the gateway 22.22.22.22 is unreachable without the Loopback interface with the same IP address on the router HanSolo. Is that correct?
Thanks in advance.

Changing the router ID is a fairly simple process, there are two methods:

- Manually under the OSPF process.
- Creating a new loopback interface with a higher IP address.

You do have to reset OSPF though or the changes won't take effect. Just do a "clear ip ospf process" and you are ready to go.

Awesome lab this one. It is actually a bit harder than what you'd expect on the ICND2 as its more involved.

True and it's also a bit harder because a lot of different protocols are mixed into it.

Can you explain why you created an access-list for the loopbacks during the rip section.

By default OSPF information will be seen in the routing table before RIP because the AD of OSPF is 110 and RIP is 120.

I created an access-list that matches the network on the loopback interface and changed the AD for those to 100.

My BW on int s0/0 is 1544Kb but ospf cost is 1562. My question is why ? 1000000/1544 = 672, and not 1562.
When i manually change BW nothing happens, is still 1562. It's my fault or GNS3 fault ?

This is what you see when you do "show ip ospf interface s0/0" ?

Thank you brother .. you deserve more than "Thanks" WORD