I have a couple of basic questions that is related to the time a packet takes ...
1. If a router receives a packet on one interface, it first checks the routing table, determines if the route exists and then checks the next hop, finds the exiting interface. What is the average time a router takes to switch a packet from one interface to another interface. Is it somewhere between 5 - 10 ms. I know this also depends on the number of routing table entries you might have, but i just need an average figure.
2. Suppose i have 5 routers connected back to back using a 64 Kbps link. Is there any way i can check what is the round trip delay. The simple PING command can give this information. But practically i want to know how if the delay calculated. I understand there are again multiple delays associated as the packet travese across a network. But in between the links only, how is the delay calculated?
Thanks in advance.