I am wondering if a network interface on a Cisco 2600 can have two IP addresses on the same network. For example, can two subinterfaces on a physical network interface have these IP addresses 192.168.1.1/24 and 192.168.1.2/24? Can it be accomplished with physical FastEthernet interfaces? It doesn't seem to work even when the logical or physical interfaces belong to two different VLANs. I get always an error message indicating that there is a conflict between IP addresses.
the serial subinterfaces can have the same ip address and also two physical serial interfaces can have the same ip address. But you cant give the same ip address on two different physical interfaces, i.e, if an ethernet interface has an ip address 220.127.116.11/8 you cant give the same ip address 18.104.22.168/8 to a serial interface.
To the best of my knowledge this is not possible. Only one interface can belong to the same network on a router. This makes sense since a router "routes" between networks. The closest thing you could do would be to use IP unnumbered, where multiple interfaces share the same IP address. However, this can only be done on non-LAN interfaces.
If you enabled bridging on the router, you might be able, since two or more interfaces would be on the same network.
Try the "ip address secondary" to assign a second ip address to the interface, the problem is not with subinterfaces, but with the algorithm by which the router calculates the routing table, try not to assign an ip address to the main interface if you intend to use subinterfaces.
This is actually a pretty cool feature, i didn't even know it existed until I was looking for a solution to advertise a subnet (prefix in BGP talk), only if a certain condition existed. This is exactly what conditional advertisements does
j ai une question j ai achete un routeur cisco 887VA-k9 , je le configuré avec la configuration ci- dessous
si je le lier avec mon pc portable sur l un de ses ports directement ça marche toute est bien ( la connexion internet + m...
Attached policy provides CLI access to the Cisco 4G router over text messaging. Two files are in the attached .tar file:
2. PDF with instructions on how to load and use the .tcl file.