Here is the best list of Cisco IOS images that can be used in Dynamips which is the underlying system for said in Understand and Apply Subnetting Part 2 - Default said in Understand and Apply Subnetting Part 2 - Default gateway: The issue with the GNS3 on these other emulations is a steep learning curve that takes time.
They are getting better and can do thing like Cisco ASA firewall and more beyond the realm of Cisco. Though it's a great low cost alternative to router emulation and network simulated environments it cannot do it all. Switches cannot be emulated in the GNS3 environment because of Cisco proprietary ASICs-ASICs cannot be emulated. In GNS3, there are a limited number of supported images AND they only support Router IOS images. Sometimes, I answer my own question and not what is said in Understand and Apply Subnetting Part 2 - Default gateway:Īre there different versions of IOS for Cisco switches and routers? I'm trying to set up GNS environment and want to make sure i'm using the right Cisco images for the routers and switches i set up. Let me know if I didn't answer what you were asking. NYEDGE1(config)#ip default-network 8.8.8.8
The static route is now a candidate route S*. Note, the Gateway of last resort is not setĬ 192.168.12.1 is directly connected, GigabitEthernet0/2Ĭ 192.168.16.1 is directly connected, GigabitEthernet0/0. The route to 8.8.8.8 must be in the routing table FIRST. I created a static route to 8.8.8.8 in NYEDGE1. %Invalid next hop address (it's this router)Īlso, the default-gateway is not is to be confused with an ip default-network. Now, having said that, this is not to be confused with a default route, this address cannot be on the same router as you set it on but it is normally also within the same subnet. Remember that the default-gateway or default-router doesn't have to be any specific address itself, as long as within the range of addresses. I generally like easy numbers to remember, so for me I would choose 192.168.10.1 but 192.168.10.59 would work just as well.Īlso, what would be the default gateway in this example? The default-gateway is ANY address in this range You as the network engineer would decided the number to be used. Made me think what would be the default gateway in this example (when splitting a network into 4 smaller networks)Is it assigned by the admin to for example 192.168.10.1 when setting up a Cisco router? Watching Understand and Apply Subnetting Part 2 Said in Understand and Apply Subnetting Part 2 - Default gateway:
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