Packet Flow From Switch To Router

Can you please explain this for me.

Packet flow from switch to router. A layer 2 non managed switch has no layer 3 capabilities at all so cannot dive into the frame payload. Else the packet has to be routed. Today we are going to see how switches and a router interact with each other by tracing arp and icmp packet flow. Packet mode and flow mode.

Packet flow in switch and router the answer is a bit more complicated than a simple yes or not but generally yes. Host d will reject the request and the host b will accept it and generates an arp reply for the mac address 000b be8e 5202 router fa0 1 mac address because the arp reply has to be given to that mac address from which arp request has been recieved. Tracing packet flow between a 2 switches and a router. In flow mode srx processes all traffic by analyzing the state or session of traffic.

The router use the next hop ip and interfaces to be used to build the new data link frame 13. We re going to look at a couple of things here. Checks the ttl value is 1. Router check for the most matching prefix to the destination 12.

The packet exits through the switch cpu port and it will be further processed by the routeros packet flow. Ip packet s flow across the network. The packet is received by the switch which in turn broadcast the request to host b and d. 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.

The biggest thing to keep in the back of your mind is two things. If not packet dropped with icmp time exceeded 11. Here s the network we are going to be playing with today. Run a packet through the switch host table to make a forwarding decision.

All the routers in these detailed steps are using ospfv2 routing protocol already configured with routes and subnets. The functions of a router switch and hub and are all different even if at times they are integrated into a single device. 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. Routers connect two or more logical subnets which do not necessarily map one to one to the physical.

In case any of the above mentioned points are true the packet gets forwarded to the switch cpu port. This is also called stateful processing of traffic.