Skip to Content

CBT: Cisco for the Real World

7 replies [Last post]
Sat, 2012-06-02 14:59
D007
D007's picture
Offline
Joined: 2012-06-02
Posts: 1

I am having issues opening the topology.net files on GNS3 uploaded to nuggetlab.com
when I open that file it tries to search for the ios image and it says it can't find it...i edited the topology.net file with notepad and pointed it to the location of the ios image, but it still says it can't find the image and I get no option to search for it. 
are we supposed to create this topology from scratch or use the config / topology.net that Jeremy already gave us with the series? 

by the way..I do have the IOS images available for all the labs. 

Thanks in advance!! 

No votes yet
Top
Fri, 2012-07-06 16:05
#1
helioper
helioper's picture
Offline
Joined: 2012-01-25
Posts: 2

Hi, Jeremy, I am having this big trouble in my topology or better yet tryin to save the nvram. first I have the ghostzise issue when create the etherchannel, which I solve by raising the RAM, now I cant save the vlans config even when i did all the procedure you explain in the nugget...

R#erase flash:
R#squeeze flash:
R#(config)#vtp file nvram:vlan.dat
R#(config)#do wr mem

then I create the vlans in the vlans mode

R#(vlan)
R#wr mem
R#wr

then save my topology,close GNS3, reopen GNS3 and Puuuufffff, my nvram an vlans configs are all goooooone!!!!

man that reaaaally piss me offf. Please Jer, some heeelp.

I am using c3745-entbasek9-mz.124-18 as my IOS.

Top
Sun, 2012-08-12 17:23
#2
icarus
Offline
Joined: 2012-08-12
Posts: 2

helioper: http://forum.gns3.net/topic5051.html

I have another issue though:
I'm using c3745-adventerprisek9-mz.124-25c and it's not allowing to create a L3 Etherchannel with the NM-16ESW.

So it's a mystery for me how Jeremy has created it.
Can anybody tell me what's the secret is?

Top
Sat, 2012-09-08 02:00
#3
Sanjay Maity
Offline
Joined: 2012-09-08
Posts: 1

jeremy used the ios image c3725-advipservicesk9-mz.124-18.bin

I think this is helpful to you.

Top
Sun, 2012-09-09 20:16
#4
icarus
Offline
Joined: 2012-08-12
Posts: 2

I've used c3725-advipservicesk9-mz.124-25b, result is the same, doesn't work:(

Could anybody make it work at all?

Top
Tue, 2012-10-02 12:57
#5
BCloud
Offline
Joined: 2012-09-24
Posts: 5

Routing with the internet routing table. (freaked out)

How does one account for the huge BGP routing table we'll see from the ISP? How do we utilize this information in our organization?

Top
Tue, 2012-10-02 17:41
#6
jmacri
jmacri's picture
Offline
Joined: 2011-07-07
Posts: 21

In order to make use of BGP Full routes (or partial routes) you need multiple ISPs. Each ISP has a different perspective of the Internet and will route differently to a given destination.

Your router uses the routes received from each ISP to make a decision about the best path (least number of Autonomous Systems (ASs)) to a given destination and transmits accordingly.

BGP (while huge) is merely an AS hop-count (technically a path-vector) routing protocol. If you don't have multiple ISPs there is really no (or very few) reasons for BGP (especially Full Routes). A default route will accomplish the same goal far more efficiently without taxing the routers resources.

Configuration Examples

Hope this answers your question.

Top
Wed, 2012-10-03 15:50
#7
BCloud
Offline
Joined: 2012-09-24
Posts: 5

Thanks for greate link. that is some useful information. Please pardon my limited knowledge of BGP. But what is the difference between full and partial BGP routes from the ISP.

Based on the article posted above the remote sites at my work has a two ISP two local router setup.

Top

You must be signed in to contribute to the forums.

Not registered? Click here to create an account. It only takes a minute and it's free!

Already signed up? Click here to login.



Dr. Radut | forum