Gns3 1.3.3
How to configure GRE tunnel between Juniper and Cisco.
GNS3 1.3.3 Virtual Box running JUNOS 12.1R1.9 (Olive) Cisco c2691-adventerprisek9-mz.124-23.image. Configuration: First we have to configure ISP devices to simulate WAN connectivity across the sites. ISP1 Configuration!Enter Privilege and Global Configuration Mode enable configure terminal! Configure the interfaces interface FastEthernet0/0. Dependencies: Python 3.6, setuptools and the ones listed here. The following commands will install some of these dependencies: sudo apt-get install python3-setuptools. Finally these commands will install the server as well as the rest of the dependencies: cd gns3-server-master sudo python3 setup.py install gns3server. To run tests use. Users running the GNS3 VM in Workstation Player should look at Note 3 at the end of the article, for a fix with WS Player 15.x versions and VIX 1.17 Downloading the VM # You can obtain the GNS3-VM in several ways.
نرم افزار شبیه ساز GNS3. دریافت لینک دانلود. لینک دانلود دانلود فایل. مسئولیت فایل آپلود شده بر عهدهی کاربر آپلودکننده میباشد، لطفا در صورتی که این فایل را. Aug 04, 2021 GNS3 is an open-source graphical network simulator that allows you to design complex network topologies. You may run simulations or configure devices ranging from simple workstations to powerful Cisco routers. It is based on Dynamips, Pemu/Qemu and Dynagen.
Tools/Software Needed:
GNS3 1.3.3
Virtual Box running JUNOS 12.1R1.9 (Olive)
Cisco c2691-adventerprisek9-mz.124-23.image
Configuration:
First we have to configure ISP devices to simulate WAN connectivity across the sites.
ISP1 Configuration
!Enter Privilege and Global Configuration Mode
enable
configure terminal
! Configure the interfaces
interface FastEthernet0/0
ip address 1.1.1.1 255.255.255.252
no shut
exit
interface FastEthernet/1
ip address 2.2.2.1 255.255.255.252
no shut
exit
!End of Interfaces Config
! Configure EIGP as Interior Gateway Protocol to allow communication between fa0/0 to fa0/1.
router eigrp 90
no auto-summary
network 1.1.1.0 0.0.0.3
network 2.2.2.0 0.0.0.3
exit
! Configure BGP as Exterior Gateway Protocol to allow communication between ISP.
router bgp 65000
no auto-summary
neighbor 2.2.2.2 remote-as 65001
neighbor 2.2.2.2 soft-reconfiguration inbound
network 1.1.1.0 mask 255.255.255.252
end
!Save changes to memory
write memory
+++END OF CONFIG FOR ISP1+++
ISP2 Configuration
! Enter Privilege and Global Configuration Mode
enable
configure terminal
! Configure the interfaces
interface fa0/0
ip address 3.3.3.1 255.255.255.252
no shutdown
exit
interface fa0/1
ip address 2.2.2.2 255.255.255.252
no shutdown
exit
!End of Interfaces Config
! Configure OSPF as Interior Gateway Protocol to allow communication between fa0/0 to fa0/1.
router ospf 1
network 2.2.2.0 0.0.0.3 area 0
network 3.3.3.0 0.0.0.3 area 0
exit
! Configure BGP as Exterior Gateway Protocol to allow communication between ISP.
router bgp 65001
no auto-summary
neighbor 2.2.2.1 remote-as 65000
neighbor 2.2.2.1 soft-reconfiguration inbound
network 3.3.3.0 mask 255.255.255.252
end
! Save changes to memory
write memory
+++END OF CONFIG FOR ISP2+++
GRE-Cisco Configuration
! Enter Privilege and Global Configuration Mode
enable
configure terminal
! Configure the interfaces
interface FastEthernet0/0
ip address 3.3.3.2 255.255.255.252
no shut
exit
! Configure Tunnel0 to be used as Generic Route Encapsulation Tunnel
interface Tunnel0
ip address 10.1.1.2 255.255.255.0
tunnel source FastEthernet0/0
tunnel destination 1.1.1.2
ip mtu 1400
keepalive 5
no shut
exit
! Configure Default Route to ISP-2
ip route 0.0.0.0 0.0.0.0 3.3.3.1
! Save changes to memory
write memory
Download Gns3 1.3.3
+++END OF CONFIG FOR GRE-Cisco
GRE-Juniper Configuration
Gns3 1.3.3 All In One
! Enter CLI Mode and Configure Mode
cli
configure
!Configure physical interface
set interfaces em0 unit 0 family inet address 1.1.1.2/30
! Configure Static Route
set routing-options static route 0.0.0.0/0 next-hop 1.1.1.1
! Configure GRE Tunneling
set interfaces gre unit 1 tunnel source 1.1.1.2 destination 3.3.3.2
! Assign IP to GRE Tunnel
set interfaces gre unit 1 family inet address 10.1.1.1/24
! Set Maximum Transmission Unit for tunnel 0
set interfaces gre unit 1 family inet mtu 1400
+++END OF GRE-Junifer Configuration+++
VALIDATION:
Dynagen and its complementary GUI GNS3 provide the very handy ability to capture traffic sent between emulated devices. Packets are written to a capture file on disk, which can then be opened with a packet analyzer like Wireshark. The only downside to this is that the traffic does not appear live in the analysis application; the capture buffer is populated only with the pakcets which have been recorded up to that point.
In Wireshark, the contents of a capture file can be refreshed by pressing Ctrl+R, but this requires tedious manual intervention and navigating to the end of the buffer every time. After taking a clue from the Wireshark wiki I was able to modify the way in which Wireshark reads capture files generated by Dynagen/GNS3 and achieve a near-real-time view of the traffic, as if it was being sniffed from a physical interface. My solution should work on all UNIX-like systems (e.g. Linux), but Windows users will have to look elsewhere.
The trick is to continuously dump the capture file being written by Dynagen to standard output, which can be fed to Wireshark as standard input. Open the preferences dialog in GNS3 (Edit > Preferences...) and select capture preferences. Modify the default Wireshark command from /usr/bin/wireshark %c to read as follows. (Thanks to e36freak in #bash on Freenode for assistance manipulating the shell command to work in GNS3!)
Also, check the option to automatically start the command when capturing.
Here's how the command works: The tail executable with the -f argument constantly outputs the content of the capture file as it is written. The --bytes=+0 bit instructs tail to begin from the first byte of the file. (This part is optional, but recommended to avoid 'unknown libpcap format' errors in Wireshark.) The output of tail is piped to Wireshark. Wireshark's arguments instruct it to begin capturing immediately from standard input.
Now, Wireshark should start immediately after selecting a capture interface and its capture buffer should be updated nearly in real-time. Tail introduces a ~1-second delay, which can be tweaked with the -s argument if desired.
You might receive an error indicating that the capture file 'is empty, no traffic captured on the link.' This simply means that no packets were captured in the time between initiating the capture and starting Wireshark. Right-clicking on the interface in GNS3 again and selecting 'Start Wireshark' a moment later should resolve it (assuming there is traffic flowing across the interface being captured).
The solution described here will also work using Dynagen alone: Simply execute the command above by hand, substituting %c with the appropriate file name.