Cisco 7200 IOS image for GNS3 Router

If you are the network engineer you must aware with the most famous network simulator that is GNS3. From here you will able to download the Cisco 7200 series IOS for GNS3. But before giving you the download link I want to discuss the some features and advantages of GNS3 over the other network simulators.

GNS3 is a graphical network simulator where you can create and build the simple and complex network scenarios on your computer virtually. In this way you test you configuration before deploying it into the real network. You can Use the different network device with GNS3 like routers, virtual PC, Cloud etc.

The Most attractive part of gns3 is that it uses the real Cisco IOS to simulate the network topology instead of programing. One shortcoming of GNS3 is that you can’t direct use the Switch IOS on Gns3 but there are many way through which you can use the switch in GNS3. For switching features on GNs3 you are required Cisco IOS with NM-16ESW-module. here is the link for GNS3 Switch IOS.

But this Post is related to Gns3 IOS images for Router, there are many GNS3 IOS for routers but one of the most stable IOS image is Cisco 7200 series IOS. Cisco 7200 Series IOS image for GNS3 have following important features:

• IP BASE WITHOUT SSH
• IP BASE
• SP SERVICES
• ADVANCED SECURITY
• ADVANCED IP SERVICES
• ADVANCED ENTERPRISE SERVICES
• Special-Purpose Feature Sets
• ADVANCED IP SERVICES WITH LI
• ADVANCED ENTERPRISE SERVICES WITH SNASW

You can download the 7200 series Gns3 IOS images for Router from Here. Please note that this IOS image is only for GNS3 use. For commercial use you are required to purchase it from Cisco.com or nearest cisco partner in your local region.

Also Learn How to add IOS in GNS3

I have tested this IOS with GNS3 and it is working for me. Please let me know if you have any issue while using this IOS. Thank you for visiting it.

Cisco IOS images for Dynamips

GNS3 offers multiple ways to emulate IOS. For older images, we use and maintain Dynamips; an emulator dedicated to emulate some Cisco hardware. Dynamips can run unmodified IOS images. In the new GNS3 1.4, there is a way to run a second category of switches and routers. These are classified as Routing and Switching virtual machines (or R+Svms) for short. What are the differences? Here are the major differences:

• IOS images are usually run in Dynamips however R+Svms are housed in a virtual machine.
• IOS images are lower in cpu and memory so you can fit more of them in one topology.
• R+Svms are all vendor Routing and Switching images that are larger in size but can be imported into GNS3 for real world network emulation.

c1700series

Availability

Due to these platforms hitting End of Sale, End of Life, and End of Support status, the images are no longer available for download from Cisco’s support sections. Currently, the c7200 images are the only ones still available for download for those with a support contract.

IOS 15.x

Only the c7200 series get newer IOS 15 images. All other platforms are now end-of-life and only support IOS 12.4. Please note that the IOSv appliance is based on IOS 15 and there are IOU (IOS on UNIX) images with IOS 15.

Should I use a mainline and technology train image?

You will find the technology train images to contain the newest features but it may also contain the most bugs. We recommend Mainline over Technology train if you are interested on stability without the need of new features.Please see Cisco IOS Versions and Naming for more information.

Minimum memory

The minimum RAM is the amount of memory needed for IOS to work at maximum capacity with most feature configured and activated. From experience you can usually use a bit less RAM just fine.

Recommended images

We really recommend using c3640, c3660, c3725, c3745 and c7200 IOS images listed below, they have proven to be the most stable in GNS3 provided you use the right amount of RAM and Idle-PC value.

Idle-PC value

This settings will help Dynamips to consume less CPU. It’s specific to each different IOS image.

1700s have 1 FastEthernet fixed port (C1700-MB-1ETH) on its motherboard, 2 subslots for WICs (maximum of 2 Ethernet ports or 4 serial ports), and no Network Module slots. Note that interfaces do not use a slot designation (e.g. “f0”)

IOS version 12.4.25d (Mainline)

File name: c1700-adventerprisek9-mz.124-25d.bin

MD5: 3ed8d56a8757771105a56070e4147716

Minimum RAM: 128MB

Proposed idle-PC value: 0x80358a60

IOS version 12.4.15T14 (Technology train)

File name: c1700-adventerprisek9-mz.124-15.T14.bin

MD5: 351190de8764263e85a2b50718f394fd

Minimum RAM: 160MB

Proposed idle-PC value: 0x824a4dc4

2600s have one or two Ethernet or FastEthernet interfaces on its motherboard, 3 subslots for WICs (maximum of 6 serial ports) and 1 Network Module slot (maximum of 4 Ethernet ports or 16 FastEthernet ports).

IOS version 12.4.25d (Mainline)

File name: c2600-adventerprisek9-mz.124-25d.bin

MD5: 8eca1f6fe57dfb3c3cf3568c0e475853

Minimum RAM: 128MB

Proposed idle-PC value: 0x80519c48

IOS version 12.4.15T14 (Technology train)

File name: c2600-adventerprisek9-mz.124-15.T14.bin

MD5: 12b8548b23e2ec593652ae9310ac797f

Minimum RAM: 256MB

Proposed idle-PC value: 0x8027ec88

The c3620 supports up to 2 Network Modules (maximum of 8 Ethernet ports, 32 FastEthernet ports or 8 serial ports). Note that tt shouldn’t be used since the latest available IOS image is very old.

IOS version 12.2.26c

File name: c3620-a3jk8s-mz.122-26c.bin

MD5: dd34b958ad362ef54ba48b187f4c97b4

Minimum RAM: 64MB

Proposed idle-PC value: 0x603a8bac

The c3640 supports up to 4 Network Modules (maximum of 16 Ethernet ports, 32 FastEthernet ports or 16 serial ports).

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IOS version 12.4.25d (Mainline)

File name: c3640-a3js-mz.124-25d.bin

MD5: db9f63ca1b46d18fb835496bfffe608a

Minimum RAM: 128MB

Proposed idle-PC value: 0x6050b114

The c3660 has 2 FastEthernet fixed ports (Leopard-2FE) and supports up to 6 Network Modules (maximum of 24 Ethernet ports, 32 FastEthernet ports or 24 serial ports).

IOS version 12.4.25d (Mainline)

File name: c3660-a3jk9s-mz.124-25d.bin

MD5: 4ac7e947f13c189d746149dc74992890

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Minimum RAM: 192MB

Proposed idle-PC value: 0x606071f8

IOS version 12.4.15T14 (Technology train)

File name: c3660-a3jk9s-mz.124-15.T14.bin

MD5: 39950b7a563aa08e94a168260409f1e6

Minimum RAM: 256MB

Proposed idle-PC value: 0x6076e0b4

The c2691 has 2 FastEthernet interfaces its motherboard (GT96100-FE), 3 subslots for WICs (maximum of 6 serial ports) and 1 Network Module slot (maximum of 16 FastEthernet ports or 4 serial ports).

IOS version 12.4.25d (Mainline)

File name: c2691-adventerprisek9-mz.124-25d.bin

MD5: a8e1f5821d87456595488d6221ce42e5

Minimum RAM: 192MB

Proposed idle-PC value: 0x60a48cb8

IOS version 12.4.15T14 (Technology train)

File name: c2691-adventerprisek9-mz.124-15.T14.bin

MD5: 91388104d7276ad09204e36d2dfcf52d

Minimum RAM: 256MB

Proposed idle-PC value: 0x60bcf9f8

The c3725 has 2 FastEthernet interfaces on its motherboard (GT96100-FE), 3 subslots for WICs (maximum of 6 serial ports) and 2 Network Module slots (maximum of 32 FastEthernet ports or 8 serial ports).Ghost 11.5 boot cd.

IOS version 12.4.25d (Mainline)

File name: c3725-adventerprisek9-mz.124-25d.bin

MD5: ac3d313d3caff5beeee244b81d2c024c

Minimum RAM: 128MB

Proposed idle-PC value: 0x602467a4

IOS version 12.4.15T14 (Technology train)

File name: c3725-adventerprisek9-mz.124-15.T14.bin

MD5: 42baf17af10d9a1471bf542f0bfd07c7

Minimum RAM: 256MB

Proposed idle-PC value: 0x60c09aa0

The c3745 has 2 FastEthernet interfaces on its motherboard (GT96100-FE), 3 subslots for WICs (maximum of 6 serial ports) and 4 Network Module slots (maximum of 32 FastEthernet ports or 16 serial ports).

IOS version 12.4.25d (Mainline)

File name: c3745-adventerprisek9-mz.124-25d.bin

MD5: 563797308a3036337c3dee9b4ab54649

Minimum RAM: 256MB

Proposed idle-PC value: 0x60aa1da0

IOS version 12.4.15T14 (Technology train)

File name: c3745-adventerprisek9-mz.124-15.T14.bin

MD5: a696619869a972ec3a27742d38031b6a

Minimum RAM: 256 RAM

Proposed idle-PC value: 0x602701e4

7200s have a different architecture. Only the 7206 is supported, it has 6 Port Adapters (PA) slots. VXR chassis, NPE-400 and C7200-IO-FE are the default settings in GNS3.

IOS 15 (Mainline)

This router series is still getting new IOS 15.x versions.

The last one at this date is:

File name: c7200-adventerprisek9-mz.152-4.M7.bin

Minimum RAM: 512MB

IOS 12.4.25g (Mainline)

MD5: 3a78cb61831b3ef1530f7402f5986556

File name: c7200-a3jk9s-mz.124-25g.bin

Minimum RAM: 256MB

IOS 12.4.24T5 (Technology train)

This one is not the latest 12.4 version but it is easier to find.

MD5: 3c4148f62acf56602ce3b371ebae60c9

File name: c7200-adventerprisek9-mz.124-24.T5

Minimum RAM: 256MB

Proposed idle-PC value: 0x606df838

At this moment, it is not possible to emulate Catalyst switches with Dynamip. This is due to the impossibility to emulate ASIC processors used in those type of devices. For switching you can use IOU L2 image or vIOS L2 images with Qemu.

However, if you want to use Dynamips you can use the EtherSwitch module with 2600s, 3600s and 3700s Series. Keep in mind that this module works differently (uses the vlan database etc.) and doesn’t support the following features:

• Access Switch Device Manager (SDM) Template
• ACL – Improved Merging Algorithm
• ARP Optimization
• BGP Increased Support of Numbered as-path Access Lists to 500
• BGP Restart Neighbor Session After max-prefix Limit Reached
• BGP Route-Map Continue Support for Outbound Policy
• Clear Counters Per Port
• DHCP Snooping
• DHCP Snooping Counters
• Diagnostics Options on bootup
• ErrDisable Reactivation Per Port
• ErrDisable timeout
• EtherChannel – Flexible PAgP
• Etherchannel Guard
• Fallback Bridging
• Flex Link Bi-directional Fast Convergence
• Flex Link VLAN Load-Balancing
• Flex Links Interface Preemption
• GOLD – Generic Online Diagnostics
• IEEE 802.1ab, Link Layer Discovery Protocol
• IEEE 802.1s – Multiple Spanning Tree (MST) Standard Compliance
• IEEE 802.1s VLAN Multiple Spanning Trees
• IEEE 802.1t
• IEEE 802.1W Spanning Tree Rapid Reconfiguration
• IEEE 802.1x – Auth Fail Open
• IEEE 802.1x – Auth Fail VLAN
• IEEE 802.1x – VLAN Assignment
• IEEE 802.1x – Wake on LAN Support
• IEEE 802.1X Multi-Domain Authentication
• IEEE 802.1x RADIUS Accounting
• IEEE 802.1x with Port Security
• IEEE 802.3ad Link Aggregation (LACP)
• IEEE 802.3af Power over Ethernet
• IGMP Fast Leave
• IGMP Version 1
• IGRP
• IP Phone Detection Enhancements
• IP Phone Enhancement – PHY Loop Detection
• IPSG (IP Source Guard)
• Jumbo Frames
• L2PT – Layer 2 Protocol Tunneling
• MAC Authentication Bypass
• MLD Snooping
• Multicast Etherchannel Load Balancing
• NAC – L2 IEEE 802.1x
• NAC – L2 IP
• NAC – L2 IP with Auth Fail Open
• Packet-Based Storm Control
• Per Port Per VLAN Policing
• Port Security
• Port Security on Private VLAN Ports
• Private VLANs
• QoS Policy Propagation via Border Gateway Protocol (QPPB)
• Rapid-Per-VLAN-Spanning Tree (Rapid-PVST)
• Reduced MAC Address Usage
• Remote SPAN (RSPAN)
• Smart Port
• Spanning Tree Protocol (STP) – Loop Guard
• Spanning Tree Protocol (STP) – PortFast BPDU Filtering
• Spanning Tree Protocol (STP) – Portfast Support for Trunks
• Spanning Tree Protocol (STP) – Root Guard
• Spanning Tree Protocol (STP) – Uplink Load Balancing
• SRR (Shaped Round Robin)
• Standby Supervisor Port Usage
• STP Syslog Messages
• Switching Database Manager (SDM)
• Trunk Failover
• Trusted boundary (extended trust for CDP devices)
• Unicast Mac Filtering
• UniDirectional Link Detection (UDLD)
• VLAN Access Control List (VACL)
• VLAN Aware Port Security
• Weighted Tail Drop (WTD)
• Routing and Switching Virtual machines from Vendors

To recap: You can import many images using Virtualbox or VMWare. ASIC based models like the Cisco Catalyst switches are impossible to import as a Routing and Switching Image.

If you require more switching features, it is recommended to use larger Virtual Machine Switches and Routers that run inside your choice of Qemu, Virtualbox or VMWare. For advanced switching IOSv and/or IOU is recommended.