When we face a problem like a call failed or no audio in SIP, usually we need to get the PCAP dump file and check the packets. This article is about how to use Wireshark to analyze SIP calls. 1.Filter Expression of Wireshark PCAP dump file contains all the protocols travel the network card, Wireshark […]
Deployment Steps: Step 1: Configuring a VPN policy on Site A SonicWall. Step 2: Configuring a VPN policy on Site B Cisco ASA Firewall Step 3: How to test this scenario. Procedure: To manually configure a VPN Policy using IKE with Preshared Secret, follow the steps below: The below screen shot of SonicWall with basic […]
GNS3 Launches Version 2.0 Version 2.0 is a new major release of GNS3, which brings significant architectural changes and new features to the growing community of over 900,000 registered network professionals. Since inception of the project GNS3 has made over 79 releases and been downloaded over 13,693,000 times. GNS3 started as only a desktop application […]
SOURCE: https://community.gns3.com/community/support/forum/blog/2014/12/26/alcatel-lucent-7750-sr-12-simulator-on-gns3 http://www.ciscoz.com/alcatel-lucent-in-gns3/ 1. Download TIMOS-SR-12.0.R6-vm.zip from https://drive.google.com/uc?export=download&id=0B2pCmTulYG-dVTFsakpfZDFMZE0 2. Extract TIMOS-SR-12.0.R6-vm.zip and put sros-vm.qcow2 into C:\Users\user1\GNS3\Images 3. open GNS3 1.2.1 -click menu Edit/Preferences click QEMU/QEMU VMs click New Name: Alcatel Type: Default click Next Qemu binary: C:\Program Files\GNS3\qemu-2.1.0\qemu-system-x86_64w.exe RAM: 1920 MB click Next Disk image (hda): C:/Users/user1/GNS3/Images/sros-vm.qcow2 click Finish click QEMU/QEMU VMs click […]
First you must install sudo apt-get install vlan load kernel module sudo modprobe 8021q Create a new interface that is a member of a specific VLAN, VLAN id 100 We use the physical interface eth0 in this example. This command will add an additional interface next to the interfaces which have been configured already sudo […]
We will be looking into a very well known tool in Linux system administrators tool box. Some times during troubleshooting this tool proves to be very helpful. With the help of this tool you can analyze the packet before it reaches the application stack. And some times detect why the server is not responding to […]
While using VMWare workstation as a platform in running vIOS/IOSv (Cisco Virtual IOS) we usually use the pipe method to access the Virtual Serial console with the devices but using undocumented feature we could access it with any telnet capable terminal software. We only need to edit the VMware vmx file (ref: vnetlabs.com/….) and add […]
Cisco IOS on Unix, also known as Cisco IOU, is released for internal Cisco use only. IOU permits to run IOS natively on x86 platform while GNS3 must emulate the whole hardware. The big difference is that IOU can run more IOS instance than GNS3, but GNS3 can run real IOS version. The purpose of […]
Linux Core Network Host This part contains Qemu, VirtualBox and VMware images of the Core Linux. Depending on installed extensions, images can be used used either as a network host or a Layer 3 switch. Thanks to this enhancement Linux Core network host can measure throughput, simulate, capture and filter network traffic. Similarly, the image with installed […]
This quick tutorial provides the steps to install GNS3 1.4, with IOU support, on Ubuntu 14.04 and 15.04 LTS 64-bit. When finished, you’ll will have to install an IOU license file (for IOU support), IOU image files, and IOS image files; GNS3 does not provide any of those files, so you’ll have to acquire them […]