Table of Contents
Install GNS3 2.1.4 on Windows with VMware Workstation
I've installed GNS3 over and over and over…
I wrote this wiki article for future me.
How to get Cisco Valid IOS Image?
Cisco IOS images use VIRL provided IOSv, IOSvL2.
I think that there is no valid IOS15 included box in this world for exam.
Dynamips supports only C7200 and IOS15 series.
Other specific box IOS images 12, and you can find box miraculous situation on eBay, Yahoo auction.
In CCIE R&S v5.1 Exam, IOS 12 not target version.
You should think buy VIRL-PE 20 node version subscription to run the valid IOS15 images on GNS3 VM.
Cisco Virtual Internet Routing Lab Personal Edition (VIRL PE) 20 Nodes - The Cisco Learning Network
I ASSUME YOU HAVE ALREADY DOWNLOADED VALID IOSv, IOSvL2 IMAGE WITH VIRL.
Download GNS3
Go to https://www.gns3.com/
You should signup GNS3 account. Strongly recommended.
or take a GNS3 build artifacts on GitHub
Releases · GNS3/gns3-gui · GitHub
choose Sign Up
Sign up completed you are ready to download GNS3 applications.
You need to download GNS3 GUI client, and GNS3 VM. You can run GNS3 on GNS3 server, but I strongly recommended You use GNS3 VM you don't want to have any unpredictable results, except install on Linux System.
Additionally, You should use Nested-VM supported Hypervisor like a VMware Workstation, KVM(Kernel based Virtual Machine).
OK. Let's go ahead.
go back to previous page to download GNS VM.
take some coffee break, you've been downloaded GNS3 files.
Deploy GNS3 VM
Edit Networking Configuration
Add New Host-only network.
If you deployed previous step Cisco VIRL, this step is necessary.
select vacant VMnetN.
Import GNS VM
Before this step, you need to extract GNS3VM ova zip.
I recommend extract to high I/O performance area. (e.g. SSD attached to SATA, NVMe M.2)
Initial import status.
Configure, Verify VM.
Make sure enabled “Virtualize Intel Vt-x/EPT or AMD-V/RVI”. and close it. VMware configuration
Change Host-only network Adapter setting that explicitly specify previous created Host-only Networking.
Memory, CPU allocation step later. leave it.
Trouble shooting
If you see “eth0 is not configured. Please manually configure it via the Networking menu.” message.
You need to configure above explicitly Host-only networking setting.
GNS3 GUI Client Installation
Let's go to install GNS3 GUI client!
Double click GNS3-2.1.4-all-in-one.exe.
All default.
Of course, this installation area should be high I/O performance area. (e.g. SSD attached to SATA, NVMe M.2)
do not touch
Some reason, this error happened, but I already installed latest Wireshark. Skip this.
Wireshark 2.4.5
You not need to use Solarwinds Standard Toolset in this timing. select No.
make sure GNS3 server(not VM) binding address 127.0.0.1.
other one - e.g self-assigned IP address 169.254.0.0 - not work properly.
allocate more cpu, memory resource best simulation performance.
if you selected over cores, get this error message.
GNS3 VM booting.
Import Cisco IOSv, IOSvL2 appliance
It's time to import Cisco IOSv, IOSvL2!
Go to GNS3 appliance page.
Marketplace - Appliances - GNS3
and search appliance IOSv
I decide to use Cisco IOSv 15.5(3)M, Cisco IOSvL2 15.2.4055
in IOSv, You need to download IOSv_startup_config.img
In the same manner, import IOSvL2 appliance.
Create First Topology
All setup done!
Let's create first topology.
drag and drop Multi-layer switch and Router, terminal PC(VPCS).
Start Simulation.
all connected, green.
Open all terminal
Configure each node following configuration.
Basic OSPF Configuration, all routing devices in area 0 (backbone)
- R1
conf t hostname R1 ! int gig0/2 ip addr 192.168.0.254 255.255.255.0 no shut int gig0/0 ip addr 192.168.1.1 255.255.255.0 no shut ! router ospf 1 network 192.168.0.0 0.0.255.255 area 0 ! end
- R2
conf t hostname R2 ! int gig0/2 ip addr 192.168.4.254 255.255.255.0 no shut int gig0/1 ip addr 192.168.3.1 255.255.255.0 no shut ! router ospf 1 network 192.168.0.0 0.0.255.255 area 0 ! end
- SW1
en conf t hostname SW1 ! ip routing ! int gig0/0 no switchport ip addr 192.168.1.254 255.255.255.0 no shut int gig0/1 no switchport ip addr 192.168.3.254 255.255.255.0 no shut int gig0/2 no switchport ip addr 192.168.2.254 255.255.255.0 no shut ! router ospf 1 network 192.168.0.0 0.0.255.255 area 0 ! end
- PC-1
ip 192.168.0.1 255.255.255.0 192.168.0.254 save
- PC-2
ip 192.168.4.1 255.255.255.0 192.168.4.254 save
- PC-3
ip 192.168.2.1 255.255.255.0 192.168.2.254 save
Verification
R1#sh ip ro
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
192.168.0.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.0.0/24 is directly connected, GigabitEthernet0/2
L 192.168.0.254/32 is directly connected, GigabitEthernet0/2
192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.1.0/24 is directly connected, GigabitEthernet0/0
L 192.168.1.1/32 is directly connected, GigabitEthernet0/0
O 192.168.2.0/24 [110/2] via 192.168.1.254, 00:00:23, GigabitEthernet0/0
O 192.168.3.0/24 [110/2] via 192.168.1.254, 00:00:13, GigabitEthernet0/0
O 192.168.4.0/24 [110/3] via 192.168.1.254, 00:00:13, GigabitEthernet0/0
SW1#sh ip ro
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override
Gateway of last resort is not set
O 192.168.0.0/24 [110/2] via 192.168.1.1, 00:07:41, GigabitEthernet0/0
192.168.1.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.1.0/24 is directly connected, GigabitEthernet0/0
L 192.168.1.254/32 is directly connected, GigabitEthernet0/0
192.168.2.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.2.0/24 is directly connected, GigabitEthernet0/2
L 192.168.2.254/32 is directly connected, GigabitEthernet0/2
192.168.3.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.3.0/24 is directly connected, GigabitEthernet0/1
L 192.168.3.254/32 is directly connected, GigabitEthernet0/1
O 192.168.4.0/24 [110/2] via 192.168.3.1, 00:00:08, GigabitEthernet0/1
R2#sh ip ro
Codes: L - local, C - connected, S - static, R - RIP, M - mobile, B - BGP
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2
i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, * - candidate default, U - per-user static route
o - ODR, P - periodic downloaded static route, H - NHRP, l - LISP
a - application route
+ - replicated route, % - next hop override, p - overrides from PfR
Gateway of last resort is not set
O 192.168.0.0/24 [110/3] via 192.168.3.254, 00:00:23, GigabitEthernet0/1
O 192.168.1.0/24 [110/2] via 192.168.3.254, 00:00:23, GigabitEthernet0/1
O 192.168.2.0/24 [110/2] via 192.168.3.254, 00:00:23, GigabitEthernet0/1
192.168.3.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.3.0/24 is directly connected, GigabitEthernet0/1
L 192.168.3.1/32 is directly connected, GigabitEthernet0/1
192.168.4.0/24 is variably subnetted, 2 subnets, 2 masks
C 192.168.4.0/24 is directly connected, GigabitEthernet0/2
L 192.168.4.254/32 is directly connected, GigabitEthernet0/2
PC-1> ping 192.168.2.1 84 bytes from 192.168.2.1 icmp_seq=1 ttl=62 time=16.366 ms 84 bytes from 192.168.2.1 icmp_seq=2 ttl=62 time=2.301 ms 84 bytes from 192.168.2.1 icmp_seq=3 ttl=62 time=4.256 ms 84 bytes from 192.168.2.1 icmp_seq=4 ttl=62 time=2.398 ms 84 bytes from 192.168.2.1 icmp_seq=5 ttl=62 time=8.488 ms PC-1> ping 192.168.2.254 84 bytes from 192.168.2.254 icmp_seq=1 ttl=254 time=15.693 ms 84 bytes from 192.168.2.254 icmp_seq=2 ttl=254 time=6.317 ms 84 bytes from 192.168.2.254 icmp_seq=3 ttl=254 time=11.525 ms 84 bytes from 192.168.2.254 icmp_seq=4 ttl=254 time=6.241 ms 84 bytes from 192.168.2.254 icmp_seq=5 ttl=254 time=4.823 ms PC-1> ping 192.168.4.1 84 bytes from 192.168.4.1 icmp_seq=1 ttl=61 time=16.961 ms 84 bytes from 192.168.4.1 icmp_seq=2 ttl=61 time=8.415 ms 84 bytes from 192.168.4.1 icmp_seq=3 ttl=61 time=6.937 ms 84 bytes from 192.168.4.1 icmp_seq=4 ttl=61 time=14.644 ms 84 bytes from 192.168.4.1 icmp_seq=5 ttl=61 time=6.549 ms PC-1> ping 192.168.4.254 84 bytes from 192.168.4.254 icmp_seq=1 ttl=253 time=6.320 ms 84 bytes from 192.168.4.254 icmp_seq=2 ttl=253 time=7.687 ms 84 bytes from 192.168.4.254 icmp_seq=3 ttl=253 time=7.313 ms 84 bytes from 192.168.4.254 icmp_seq=4 ttl=253 time=8.617 ms 84 bytes from 192.168.4.254 icmp_seq=5 ttl=253 time=8.096 ms
All works fine, welcome to internetworking simulation with GNS3!
Tips
- DO NOT EXECUTE VPCS in GNS3 server, arp response too slow. EXECUTE VPCS in same VM(with another routing devices).
References
