Asymmetric routing in general is a normal, but unwanted situation in an IP network. Asymmetric routing is a situation where for one reason or another packets flowing in i.e. TCP connections flow through different routes to different directions. As a rough example: Host A and B located in different continents are communicating through a TCP connection. Segments sent from host A to host B reach the destination through Sprint link but segments sent from B to A reach the destination through MCI link.
Asymmetric routing as described above is not a problem for current TCP/IP implementations, since TCP connection does not care which route a certain IP packet takes as long as it reaches its destination in a reasonable time.
Asymmetric routing can occur in a smaller scale also. It could happen in a situation where an organization uses two different routes, like a VPN and a leased line, for instance, to their branch office. ...situation where segments on a single connection come in to the network through one node and go out through another node.
in assymetric routing packet follow the two different path for incoming and outgoing...
it means if hostA is connected with the hostB with two different link then packet from hostA will travel to one path to reach destination(to hostB) and packet from B will travel to other path to reach destination (hostA), this is just one example to understand but in ISP you can have different scenario.
normally its not good to have assymetric routing in your network as it will create more complexity during the troubleshooting networks...
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.