Hi everyone, my question is about broadcasts.

An IP address is composed of networks and nodes so a 255.255.255.255 is a broadcast to all hosts on the current network. Then a x.x.255.255 is a broadcast to all hosts on network x.x Finally my question is this: 255.255.x.x according to the book I am reading is a broadcast to "all networks" but how is this possible if routers break up broadcast domains?????

Thanks!

Failed the 642-813 Switching Exam this morning.  My score was 770 and needed 790.  I had labs 4, 5, 6 and I had an issue with lab 4.  When I changed over to the DSW1 device and entered config t, the SIM would not allow me to create the extended access-list.  When I type the "ip access-list extended" command it would not take and would only take the access-list standard command.  I am pretty sure that I missed this lab..  I was successful in configuring ASW1 with the Radius-Server, but the DSW1 device did not like the ip access-list extended net_172 command.  :o

Furthermore the 6 question testlet\simlet that I had wasn't even close to the one on How2Pass.  The exam had the switching diagram with individual questions, but did not have access to the configs, i.e. the schroll down screen for reading the config.  There was no way to figure out the questions.  I screwed the pooch on one of the labs because I got nervous for limited time..  Out of the 50 questions, there were only around-12-14 that were similar to the How2Pass study material.  I still would have passed if I hadn't lost it on Lab6.  Does anyone know what the heck is going on with the testlet.  It wasn't even close?  Pretty much knew that i was going to fail at around question 30.  Taking a little break on taking it again in 2 weeks..  I had one question on wireless and maybe 2 on voice related issues. 

Time to hit it hard and then go rip it again.  Moving Forward!! 

Took the CCENT today, passed with a score of a 1000. Can not put enough emphasis on studying and using How2Pass as only an aid, don't rely on it. I used Richard Deal's book which i though was great. Worked my butt off for around 3 weeks. You need to fully understand the cocepts being teached and you will then be able to make educated guess if your unsure. 

Now Bring on Part 2

I have my CCNA this afternoon and am wondering what peoples test experience was like today. Sims and question areas pls

Looking at the config listed for R2, they set the distance using
distance eigrp 90 109

I think it should have been distance eigrp 90 190
Because the default external distance is 170, so making it 109 would make the path through R2 to OSPF domain a better option than going through R3...And the one through R3 is the desired path for this Lab.
Not to mention that OSPF AD is 110.

Does anyone have ideas on this??

Please, could somebody explain how to get the answer for this question. I have googled it and I just do not know how to get to the correct answer. " Which command would allow the translations to be created on the router?
I understand the IP address part but not the prefix length. Doing the math on the IP's 1.1.128.1 - 1.1.135.174 looks to me the prefix would would be 21 which is not in the list.

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I didnt understand why we dont use 12 host bits?

View the exhibit. Currently the two eBGP links between AS100 and AS200 have an average inbound load of 65% and 20% respectively. After further investigation, traffic to 10.10.1.16/28 accounts for 45%, and traffic to 10.10.1.32/28 and to 10.10.1.48/28 each account for 20% of the inbound load. The BGP attributes are currently set at their default values in both autonomous systems.

If you want to influence how AS200 sends traffic to AS100, which eBGP configurations would you configure in AS100 to influence AS200 to use the eBGP links more evenly? (Select two.)



Your Answer:    route-map as_50 permit 10
                          match ip address 50
                          set metric 150
                          access-list 50 permit 10.10.1.32 0.0.0.240
                          neighbor 192.168.30.2 route-map as_50 out

Correct Answer: neighbor 192.168.20.2 route-map as_50 out
                          route-map as_50 permit 10
                          match ip address 50
                          set metric 150
                          access-list 50 permit 10.10.1.32 0.0.0.240



Explanation:
We want to reduce the incoming traffic on the 65% route and increase the traffic on the 20% route, by using mechanism that instructs EBGP neighbor in AS 200 to prefer more the path between routers F and B.
The MED is used to decide how to enter an AS. It is used when multiple pathways exist between two autonomous systems, and one AS is trying to influence the incoming path from the other AS. A lower MED value is preferred; the default set to 0 for Cisco routers. So what we want to do is raise the MED on a subnet on the 65% route in AS 100, that when advertised to EBGP neighbor in AS 200, it prefers the 20% route.
Since the 10.10.1.48 favors the 20% from router B route due to route cost,  and 10.10.1.16 favors the 65% route from router A due to the same reasoning, the subnet we should try to manipulate is the 10.10.1.32 because it is traveling the 65% path (20% +45%=65%). So lets raise the MED on the 65% path from router A to 150 so the lower MED on the 20% path from router B is preferred.
Step 1: Define the neighbor that you want to raise the MED to and the route-map you will use to do this:
Neighbor 192.168.30.2 route-map AS_50 out
Step 2: Write the Route map to raise Med to 150 and define the traffic associated with this route-map via ACL:
route-map as_50 permit 10
match IP address 50
set metric 150
access-list 50 permit 10.10.1.32 0.0.0.240
Now you have raised the med of a 20% traffic across the Router A route to the AS200. This traffic will now switch to use router B route as the preferred route due to lower MED. This in turn raises the traffic on router B to 40% (from 20%) and lowers the traffic on router A to 45% (from 65%).


Based on the explanation, shouldn't my answer be correct? Also the access-list entry wildcard mask should be 0.0.0.7 and not 0.0.0.240

QID:RTE140, For BGP, regarding the Exhibit,
I think the ACL that is referenced is incorrect.....
"match ip address 20"
And the ACL is "access-list 65 permit...."


And also::

Hands On Lab #4, OSPF Virtual Link
This has the IPv6 addresses.

I am confused by the Running Config between R2 and R3
They are configured w/ IPv4 Addresses, but yet show ospf for IPv6 enabled on the interfaces.
I don't think it will work that way.

Can anyone smarter than I, shed some light on those two problems??

When I was practicing for the simulations on the CCNA I used Packet Tracer, a bunch.  Now it's time for the CCNP and Packet Tracer doesn't support many of the required commands .  I have seen a few references to GNS3, checked out the web site, they say I will need an IOS file.  I am familiar with IOS files, I also know a CISCO IOS is a closely guarded item.  I asked my CISCO instructor about it, turns out I got a better chance at sleeping with his wife.  My question is, for you guys/gals running GNS3, where are you getting these IOS files.