(The ios that supports a comprehensive routing protocol, the memory usage is also relatively, it is suitable for GNS3 or Xiaofan, I use Xiaofan! This is the best router emulator in my opinion! And it is the 12.4-25 version, which is really good! It took me a long time to find it, and I gave it to those comrades who fought with me on the Internet! The most important thing is to support the configuration of Layer 3 vlan interface, and the switching support can also be practiced! It supports mpls and it is also K9! Only give to those who need it most! Personally strongly recommend
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