I have a theoretical question. For example, one router - two ethernet ports - static routes - with IP addresses for the same subnet on each port. How would routing happen for a specific subnet, same subnet on two ports? Which port would be routed if a packet was destined for a subnet which is attached to two ports?
I will try. There would be a router (IDDN 1) with two ports each connected to a switch (ADLE & ASC) via dsl modems. The switches are also connected via dsl modems. So, it looks like a triangle with a router at the top and each of the other legs to a switch. The question is basically how would a packet from/through one of the switches get to the router since both ports at the router connect to effectively the same subnet? Through the direct path (static route) or through the other switch to the other port on the router. No specific routing protocols are used (RIP or OSPF for example).
There is a basic consideration of Cisco routers that impacts your question. Cisco IOS will not allow 2 routed LAN interfaces in the same subnet. If you want to connect two LAN interfaces on the same router in the same subnet then you must configure bridging on the interfaces and configure Integrated Routing and Bridging with a BVI to make this happen. What would then happen is that spanning tree would operate on the router interface (at the head of the triangle) and it would put one of the interfaces into blocking mode. As a theoretical question it may be interesting but as a practical matter you can not have 2 active interfaces on that router routing into that subnet.
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.