Basic Configuration Cisco Router with Packet Tracer

Saya tinggalkan sejenak dunia “persilatan” linux. Dan masuk "terjerumus" ke dunia cisco, hehehe.. :). Udah lama tidak pernah lagi otak-atik cisco, jadi sudah banyak lupa. Makanya beberapa hari ini mulai lagi mengingat-ingat tentang pembelajarang ccna. Dengan menggunakan Packet Tracer dan GNS3 sebagai bahan simulasi, karena ndak ada alat yang real.

Postingan ini, mungkin tidak terlalu details dan bukan untuk melangkahi para sesepuh yang sudah lama berkecimpung di dunia cisco. Hanya mencoba mengulas ilmu yang sudah didapat, agar tidak cepat lupa. Dan saya anggap anda yang tertarik dengan postingan ini adalah orang yang minimal sudah pernah menggunakan packet tracer atau gns3. Atau bisa jadi orang yang sudah pernah mempelajari ini, tapi sudah banyak lupanya, seperti saya.. hahaha…

Tidak perlu berpanjang kata lagi, langsung kita mulai. Saya mulai bereksperimen dengan membuat sebuah jaringan yang sangat, sangat, sangat sederhana. Hanya sebuah router yang terkoneksi dengan sebuah komputer, seperti gambar.

Re-Detect Network Interface Card in Ubuntu 13.04 and Centos 6.4

After making changes to the Network Interface Card (NIC), and when you run the command ifconfig, network adapters can't up. No visible interface ethernet (eth. ..), only the loopback interface (lo) is visible.

In ubuntu

If using the command "service networking restart", not seen the error. Use the command "ifup eth0", then you will get the error.

Ifup eth0

Internet Systems Consortium DHCP Client 4.2.4

Copyright 2004-2012 Internet Systems Consortium.

All rights reserved.

For info, please visit https://www.isc.org/software/dhcp/

Cannot find device "eth0"

Error getting hardware address for "eth0": No such device

Failed to bring up ngeri-eth.

YFI Hotspot Manager on Fedora 18 / 19 and Centos 6.4

Ok. Back to my experiment. I have spent many days to set up YFI Hotspot Manager, using Fedora 18 64bit, Fedora 19 64bit and Centos 6.4 64bit. If you are using 32 bit, it should be no problem. I didn’t use Ubuntu, because it’s often used. I do not want to be called just copy the post. Although this post reference to posts that already exist.

As usually, I assume a computer already installed, one of these operating systems, Fedora 18 / 19 or Centos 6.4, with a minimum packet. After configuration ethernet, and internet is ok, then continue to the next step.

How to Fix Problems in Installing "YFI Hotspot Manager"

What do you think about the picture above ?  Yes. The login administrator yfi hotspot manager but there's no box username and password. Did you ever get an error like the picture above?  For me, the error like picture above, appear many times. I have collected many kinds of errors of installing YFI Hotspot Manager and how to fix it. This is all I got when I tried YFI Hotspot manager installation in Ubuntu 12:10 / 13:04, fedora 18/19 and centos 6.4. Do not be afraid, because of these errors. At the time of installation you will not get this much errors, (probably only get 1 or 2 errors only). You even probably will not get an error, if you follow the tutorial how to installing yfi hotspot manager correctly, and carefully. Especially following the tutorial from me ... hahaha ...

Remember this.

Sometimes when you have run the command to correct the error,  nothing can change. Still error / problem. This is because the permission of the selinux.  Make sure, you have disable selinux.

Edit /etc/selinux/config

SELINUX=disabled

Let's look at a list of errors and how to fix it.