Queuing Models in NS2

Image
M/M/1 is a system with poisson arrival time, servicing exponentially and a queue of unlimited capacity and type of FIFO Queue. This is the simplest queuing system.  NS2 supports various distributions like pareto, exponential, constant, unifrom, etc to handle the network dynamics and metrics. So it is very easy to test the given network link to monitor a given queue using any of these queuing models. The listing 3 and 4 are monitoring the link when DropTail queue is used with a capacity of finite and infinite. Listing 13.3 uses infinite capacity and Listing 13.4 uses Finite capacity The output screen shot is shown below the scripts for further understanding
Listing 3 – M/M/1 Queuing Model #new Simulator creation set ns [new Simulator] #trace file creation for capturing the UDP data set tf [open out.tr w] $ns trace-all $tf
#setting the exponential distribution param set lambda 30.0 set mu     33.0
#creation of nodes set n1 [$ns node] set n2 [$ns node] #The queue limit is 1Lakh as the capacity is infin…

How to mount Remote Windows File System in Linux (CIFS)


This post is to tell you how to mount a remote windows file system in Linux/Unix platform.
There is a filesystem called CIFS in the recent years called (Common Internet File System). Older linux versions has SMBFS (Samba File System) where in both the cases you can mount the remote windows Server file systems in Linux.

Here are the simple steps to do that.
1. You need to know the Mounted Windows Username and Password
2. Should have the Linux Super User (root login) for your Linux Machine
3. The Windows share folder

Here are the steps:
Step 1: Open the Terminal in Linux and enter into the su mode (Super user mode)
$] su
$] mkdir -p /mnt/windowserver (Create a mountable folder in the /mnt directory, this directory is again accessible with root rights)
$] mount.cifs //machinename/sharefolder  /mnt/windowserver -o username=administrator, password=myPassword

If you want to mount the entire directory, then from an IP, then
$] mount.cifs //192.168.1.1/D$  /mnt/windowserver -o username=administrator, password=myPassword

See the image below to see the mounted folder.
Mount CIFS
Mount CIFS

The above command may ask you to enter the password of the Remote windows machine. If the above line is not working, then enter the following line

$] mount -t cifs //machinename/sharefolder  /mnt/windowserver -o username=administrator, password=myPassword 

T S Pradeep Kumar

Popular posts from this blog

AWK Scripts for NS2 to process data from Trace Files

Xgraph

ns2 installation in Ubuntu 14.04