"Istirahatkanlah dirimu dari mengatur urusanmu, karena segala yang telah diurus untukmu oleh "Selainmu", tak perlu engkau turut mengurusnya."

Networking

 ◊  Tentang Oracle membeli SUN

by danang.wijanarko@gmail.com

 

Mengetahui berita tentang pembelian SUN oleh Oracle seperti mengetahui bahwa Oracle sudah 1 langkah lebih dekat ke bisnis langsung Telco Insdustry. Meskipun kemungkinan Oracle untuk masuk ke bisnis langsung industri telekomunikasi sudah tercium "agak" lama, namun yang tidak terprediksi adalah, Oracle membeli SUN. Ini adalah langkah yang sangat besar, sebab SUN sendiri adalah vendor yang sangat bonafit di dalam mensupport

 ◊  Some words about OSPF

by danang.wijanarko@gmail.com

 

In particular purpose you will need OSPF for your specific reason. There are many other AS routing method, but in this article i just interested with OSPF.

LSA

The get the feeling of OSPF it is better to understand about its LSA. LSA (Link State Advertisement) is the basic communication means of the OSPF routing protocol. The important type used in this article are:

  • Type 3: ABR Summary LSA

An Area Border Router (ABR) takes information it has learned on one of its attached areas and it can summarize it (but not by default) before sending it out

 ◊  Accessing vmware/vmplayer serial console like (using socat)

by danang.wijanarko@gmail.com

 

I've been dealing so much on OS testing purpose. And sometimes i need to simulate a "LFS" like OS where all output is configured to go trough serial device all of them. So even we are succeed to boot the OS we will not see any output on the VMWARE/VMPLAYER screen.

Ok when dealing with VMWARE/VMPLAYER so how to make an easy way to route all those serial message to our internal file, so we could just do "tail -f <serial_simulate_file>" to see the output ?. This article will explain briefly how to do this.

Execution

First you need this OS already succeed to boot on your VM* box. Then you should install socat (Multipurpose relay (SOcket CAT)), you can find it here. In case

 ◊  IP packet flow inside kernel

by danang.wijanarko@gmail.com

 

Here the picture of packet flow.

IP packet flow

 

 

 

 

 

 

 

 

- d

"Bekatul Port" Personal Enterprise Number (PEN) registered @ IANA OID

ASN.1 Notation: {iso(1) identified-organization(3) dod(6) internet(1) private(4) enterprise(1) 30347}

Dot Notation: 1.3.6.1.4.1.1.30347

IRI Notation: oid:/ISO/Identified-Organization/6/1/4/1/30347

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