Packet Tracer

Lendawg001

I've attached Crossover cables between three routers, to the wrong interfaces. 
How do I remove the cabling to reattach to the correct interfaces?

I keep trying but the cable won't go away and keeps giving me an error message that I can't reconnect, because the other end is a gigabit port and I want to connect the serial ports.

AvgITGeek

Click the delete icon, select the link and delete it.

Lendawg001

Thanks! I'm going to spend some time in here to get better acquainted with the various functions. I appreciate your input, you saved me precious time!

kaiju

Get on Netacad and take the Packet tracer course.

jasper_zanjani

kaiju said:

Get on Netacad and take the Packet tracer course.

how do you compare these courses to the ones on GNS3?

kaiju

The packet tracker course provides familiarization so a person will be able to create, modify and troubleshoot labs with ease.
I cannot compare the PT and GNS3 courses because I purchased my study material from friends who teach for a living. PT is sufficient for CCNA R&S but GNS3 is recommended for CCNA Sec, CCNP and higher exams. 

My suggestion for CCNA is build a foundation with whatever method that suits you best (let it be aural, video or book) and then utilize Boson to test your knowledge. 

Foundation:
Subnetting - know it and know it well
Decimal to/from binary  - know how to convert from one to the other. 
Binary to/from hex - know how to convert from one to the other. 
MAC address - knowing hex will help a lot. Know the basics of mac address.
IPV6 - know the basics: unicast, multicast, loopback, differences between IPV4 and IPV6.
Routing - understand the differences 
OSPF/OSPFV3 - know how to configure and troubleshoot
EIGRP  - know how to configure and troubleshoot
RIP/RIPV2  - know how to configure and troubleshoot
BGP/iBGP - know the differences.