![](https://static.wixstatic.com/media/68165d_f9cd9a41f03b4c558d92942b5c29d17a~mv2.png/v1/fill/w_980,h_286,al_c,q_85,usm_0.66_1.00_0.01,enc_auto/68165d_f9cd9a41f03b4c558d92942b5c29d17a~mv2.png)
Nội dung:
1. Cài đặt phần mềm GNS3
2. Add Cisco Router vào GNS3
3. Add Layer 3 Switch vào GNS3
4. Add Layer 2 Switch vào GNS3
Thực hiện:
1. Cài đặt phần mềm GNS3
Trước tiên chúng ta tiến hành tải file cài đặt GNS3 về máy tính. Link download link
Sau khi tải xong chúng ta tiến hành cài đặt GNS3. Trong hướng dẫn này mình dùng bản GN3-2.1.5-All-in-one
Chọn Next
![](https://static.wixstatic.com/media/68165d_e661ced5007d4099acfbca3d85dd7f27~mv2.png/v1/fill/w_980,h_551,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_e661ced5007d4099acfbca3d85dd7f27~mv2.png)
Chọn I Agree
![](https://static.wixstatic.com/media/68165d_6fd8861932084e6187640749ce0fac9b~mv2.png/v1/fill/w_980,h_551,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_6fd8861932084e6187640749ce0fac9b~mv2.png)
Chọn Next
![](https://static.wixstatic.com/media/68165d_705b3742009a4d07a1785cc33ab886c5~mv2.png/v1/fill/w_980,h_551,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_705b3742009a4d07a1785cc33ab886c5~mv2.png)
Có thể check bỏ những components không cần thiết rồi nhấn Next
![](https://static.wixstatic.com/media/68165d_df6d05e10f7a437284adbd4ae4975366~mv2.png/v1/fill/w_980,h_551,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_df6d05e10f7a437284adbd4ae4975366~mv2.png)
Chọn Install
![](https://static.wixstatic.com/media/68165d_3177784c3a884f5b8db261340b9da23f~mv2.png/v1/fill/w_980,h_551,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_3177784c3a884f5b8db261340b9da23f~mv2.png)
Trong quá trình cái đặt GSN3 có thể có yêu cầu các thư viện cần thiết, bạn cứ nhấn Next để đồng ý cài đặt
Sau khi cài xong chúng ta mở GNS3 lên
Tick chọn Run only legacy IOS on my computer > Next
![](https://static.wixstatic.com/media/68165d_a91583a49a5241888772d8277c0d1bfb~mv2.png/v1/fill/w_980,h_601,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_a91583a49a5241888772d8277c0d1bfb~mv2.png)
Nhấn Next
![](https://static.wixstatic.com/media/68165d_c75d29d95f424f8a85160d221251a9e6~mv2.png/v1/fill/w_980,h_606,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_c75d29d95f424f8a85160d221251a9e6~mv2.png)
Chọn Next
![](https://static.wixstatic.com/media/68165d_8e40188755e94614a1e2d9276182bea5~mv2.png/v1/fill/w_980,h_602,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_8e40188755e94614a1e2d9276182bea5~mv2.png)
Chọn Finish
![](https://static.wixstatic.com/media/68165d_5b7565e4aa6041d58ff0f36561006a6e~mv2.png/v1/fill/w_980,h_601,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_5b7565e4aa6041d58ff0f36561006a6e~mv2.png)
Vậy là chúng ta đã cài đặt xong phần mềm GNS3
2. Add Cisco Router vào GNS3
Chuẩn bị các file IOS cần thiết. Link tải IOS cisco cho GNS3 link
Mở GNS3 lên
Tạo Project:
Name: đặt tên cho project
Location: chọn nơi lưu project
Chọn OK
![](https://static.wixstatic.com/media/68165d_f9418e75a84e452498b0cb2b1e7c1f96~mv2.png/v1/fill/w_980,h_551,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_f9418e75a84e452498b0cb2b1e7c1f96~mv2.png)
Chọn menu Edit > Preferences...
![](https://static.wixstatic.com/media/68165d_40e4de59b2d14bafa541cccb928306e5~mv2.png/v1/fill/w_980,h_458,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_40e4de59b2d14bafa541cccb928306e5~mv2.png)
Chọn Dynamips > IOS routers > New
![](https://static.wixstatic.com/media/68165d_3256305d17374dce9b864cc482edd7cd~mv2.png/v1/fill/w_980,h_527,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_3256305d17374dce9b864cc482edd7cd~mv2.png)
Tick chọn New Image > Browse... chọn file IOS đã tải về > Next
![](https://static.wixstatic.com/media/68165d_746edff56bfc4e42834c2e676da0a43c~mv2.png/v1/fill/w_980,h_703,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_746edff56bfc4e42834c2e676da0a43c~mv2.png)
Chọn Next
![](https://static.wixstatic.com/media/68165d_dba45b59bbb64cf0952c03f7c0fe67c5~mv2.png/v1/fill/w_980,h_703,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_dba45b59bbb64cf0952c03f7c0fe67c5~mv2.png)
Chỉnh dung lượng RAM cho phù hợp > Next
![](https://static.wixstatic.com/media/68165d_6dd4c0209f554cfcacaadcda2ee8dd98~mv2.png/v1/fill/w_980,h_704,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_6dd4c0209f554cfcacaadcda2ee8dd98~mv2.png)
Thêm card cho router nếu cần > Next
![](https://static.wixstatic.com/media/68165d_a1cca944ddc340fdbda94cd211860f07~mv2.png/v1/fill/w_980,h_705,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_a1cca944ddc340fdbda94cd211860f07~mv2.png)
Chọn Idle-PC finder để ngăn chặn trường hợp khi start router lên thì dung lượng RAM của máy tính chạy 100%
![](https://static.wixstatic.com/media/68165d_0a4b8dfbe4e245a6b07645b4e758086f~mv2.png/v1/fill/w_980,h_691,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_0a4b8dfbe4e245a6b07645b4e758086f~mv2.png)
Sau khi finder xong chúng ta chọn Finish
![](https://static.wixstatic.com/media/68165d_98d66fdf677a4aec8b2f916d9c5ec849~mv2.png/v1/fill/w_980,h_705,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_98d66fdf677a4aec8b2f916d9c5ec849~mv2.png)
Chọn Apply > OK
![](https://static.wixstatic.com/media/68165d_f626ea65235d4c5f8ddd46435e19d7f0~mv2.png/v1/fill/w_980,h_529,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_f626ea65235d4c5f8ddd46435e19d7f0~mv2.png)
![](https://static.wixstatic.com/media/68165d_4bd0481d89a0438c948a77000140ef76~mv2.png/v1/fill/w_980,h_616,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_4bd0481d89a0438c948a77000140ef76~mv2.png)
Chọn biểu tượng hình tam giác màu xanh để start router lên
![](https://static.wixstatic.com/media/68165d_d9f8568865b44b1d8000ad911e4fbc81~mv2.png/v1/fill/w_980,h_511,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_d9f8568865b44b1d8000ad911e4fbc81~mv2.png)
Console vào router
![](https://static.wixstatic.com/media/68165d_6b4580cbce6045f49f6c4faf8f63b76d~mv2.png/v1/fill/w_980,h_502,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_6b4580cbce6045f49f6c4faf8f63b76d~mv2.png)
Như vậy ta đã add thành công IOS router vào GNS3
3. Add Layer 3 Switch vào GNS3
Chọn menu Edit > Preferences...
![](https://static.wixstatic.com/media/68165d_40e4de59b2d14bafa541cccb928306e5~mv2.png/v1/fill/w_980,h_458,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_40e4de59b2d14bafa541cccb928306e5~mv2.png)
Chọn Dynamips > IOS routers > New
![](https://static.wixstatic.com/media/68165d_3256305d17374dce9b864cc482edd7cd~mv2.png/v1/fill/w_980,h_527,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_3256305d17374dce9b864cc482edd7cd~mv2.png)
Tick chọn New Image > Browse... chọn file IOS đã tải về > Next
![](https://static.wixstatic.com/media/68165d_de5371fd25b14495ab2632c04d2a3d65~mv2.png/v1/fill/w_980,h_707,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_de5371fd25b14495ab2632c04d2a3d65~mv2.png)
Tick chọn This is an EtherSwitch router > Next
![](https://static.wixstatic.com/media/68165d_d1e61a9379924a5aa86ddf3d5d504fcd~mv2.png/v1/fill/w_980,h_705,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_d1e61a9379924a5aa86ddf3d5d504fcd~mv2.png)
Chỉnh dung lượng RAM cho phù hợp > Next
![](https://static.wixstatic.com/media/68165d_30336812079649b79ab8f834ea199d69~mv2.png/v1/fill/w_980,h_701,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_30336812079649b79ab8f834ea199d69~mv2.png)
Thêm card cho router nếu cần > Next
![](https://static.wixstatic.com/media/68165d_f9909a5f972947028572e4984fde39fc~mv2.png/v1/fill/w_980,h_700,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_f9909a5f972947028572e4984fde39fc~mv2.png)
Chọn Idle-PC finder
![](https://static.wixstatic.com/media/68165d_0a4b8dfbe4e245a6b07645b4e758086f~mv2.png/v1/fill/w_980,h_691,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_0a4b8dfbe4e245a6b07645b4e758086f~mv2.png)
Chọn Apply > OK
![](https://static.wixstatic.com/media/68165d_fde4523664a049b79d7d49450dbcca00~mv2.png/v1/fill/w_980,h_536,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_fde4523664a049b79d7d49450dbcca00~mv2.png)
![](https://static.wixstatic.com/media/68165d_869ca61b01924cfea9bd02f3f7e80df0~mv2.png/v1/fill/w_980,h_496,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_869ca61b01924cfea9bd02f3f7e80df0~mv2.png)
4. Add Layer 2 Switch vào GNS3
Tải ios switch layer 2 về máy tính. Link tải link
Chọn menu Edit > Preferences...
![](https://static.wixstatic.com/media/68165d_40e4de59b2d14bafa541cccb928306e5~mv2.png/v1/fill/w_980,h_458,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_40e4de59b2d14bafa541cccb928306e5~mv2.png)
Chọn QEMU > Qemu VMs > New
![](https://static.wixstatic.com/media/68165d_fc48e517f8c44e71ab7c103aebddb512~mv2.png/v1/fill/w_980,h_528,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_fc48e517f8c44e71ab7c103aebddb512~mv2.png)
Name: Đặt tên > Next
![](https://static.wixstatic.com/media/68165d_982ca58b4fe44693b7e6e8fe4ccd1075~mv2.png/v1/fill/w_980,h_692,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_982ca58b4fe44693b7e6e8fe4ccd1075~mv2.png)
QEMU binary: Vì GNS3 mình cài trên windows nên chọn như bên dưới > Next
![](https://static.wixstatic.com/media/68165d_4de8af67beb24825881f5116ae5d5c5f~mv2.png/v1/fill/w_980,h_689,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_4de8af67beb24825881f5116ae5d5c5f~mv2.png)
Chọn telnet > Next
![](https://static.wixstatic.com/media/68165d_690d578601794756b0760c6863229d70~mv2.png/v1/fill/w_980,h_682,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_690d578601794756b0760c6863229d70~mv2.png)
Browse... đến ios đã tải về
![](https://static.wixstatic.com/media/68165d_bffbe6734fb94a4d9eecc7c2f0087e1d~mv2.png/v1/fill/w_980,h_696,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_bffbe6734fb94a4d9eecc7c2f0087e1d~mv2.png)
![](https://static.wixstatic.com/media/68165d_8edd495ec1a5440c975d3cecbe5ee7ad~mv2.png/v1/fill/w_980,h_529,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_8edd495ec1a5440c975d3cecbe5ee7ad~mv2.png)
Chuột phải vào QEMU vừa tạo chọn Configure Template
![](https://static.wixstatic.com/media/68165d_51181704f6f443d8b984e9aa213531dc~mv2.png/v1/fill/w_980,h_371,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_51181704f6f443d8b984e9aa213531dc~mv2.png)
Category: Chọn Switches
Browse...: Chọn biểu tượng
![](https://static.wixstatic.com/media/68165d_9a248a6e1d114316876c3677fc9c7bf0~mv2.png/v1/fill/w_980,h_857,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_9a248a6e1d114316876c3677fc9c7bf0~mv2.png)
Chọn tab Network > Adapters: chỉnh số lượng card mạng cho switch
![](https://static.wixstatic.com/media/68165d_edf227cef4ec4bd58ff8eeeec9a4985b~mv2.png/v1/fill/w_980,h_845,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_edf227cef4ec4bd58ff8eeeec9a4985b~mv2.png)
Start switch lên kiểm tra có các lệnh của switch layer 2. Qúa trình khởi động switch có thể lâu tùy theo cấu hình máy tính của bạn.
![](https://static.wixstatic.com/media/68165d_54230c6ddf7c4707b437e9d7873a9c29~mv2.png/v1/fill/w_980,h_418,al_c,q_90,usm_0.66_1.00_0.01,enc_auto/68165d_54230c6ddf7c4707b437e9d7873a9c29~mv2.png)
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