Packet Flow From Switch To Router

Can you please explain this for me.

Packet flow from switch to router.

I am going to map each step to the upper large figure so i recommend to print or open it in different window to map each step. A layer 2 non managed switch has no layer 3 capabilities at all so cannot dive into the frame payload. The router use the next hop ip and interfaces to be used to build the new data link frame 13. Today we are going to see how switches and a router interact with each other by tracing arp and icmp packet flow.

In flow mode srx processes all traffic by analyzing the state or session of traffic. Ip packet s flow across the network. The packet exits through the switch cpu port and it will be further processed by the routeros packet flow. Router check for the most matching prefix to the destination 12.

Else the packet has to be routed. Packet flow in switch and router the answer is a bit more complicated than a simple yes or not but generally yes. In packet mode srx processes the traffic as a traditional router on a per packet basis. Routers connect two or more logical subnets which do not necessarily map one to one to the physical.

Thanks for the series i wish to know how the packet flow between two switches with one host 192 168 1 1 24 in one switch and another host 192 168 1 5 24 in another switch. All the routers in these detailed steps are using ospfv2 routing protocol already configured with routes and subnets. An srx device can operate in two different modes. Run a packet through the switch host table to make a forwarding decision.

Packet mode and flow mode. Routers and switches are both computer networking devices that allow one or more computers to be connected to other computers networked devices or to other networks. The functions of a router switch and hub and are all different even if at times they are integrated into a single device. The packet is received by the switch which in turn broadcast the request to host b and d.

Here s the network we are going to be playing with today. If not packet dropped with icmp time exceeded 11. Tracing packet flow between a 2 switches and a router. Checks the ttl value is 1.

This is also called stateful processing of traffic. The biggest thing to keep in the back of your mind is two things.