Basics
IP Forwarding
IP routers use datagram forwarding, to deliver packets, but the “destination” values listed in the forwarding tables are…
July 21, 2021 · Rajil TLBasics
Basics
IP – Internet Protocol
To solve the scaling problem with Ethernet, and to allow support for other types of LANs and point-to-point…
July 21, 2021 · Rajil TLBasics
Password Sniffing
In the fall of 1994 at Loyola University I remotely changed the root password on several CS-department unix…
July 21, 2021 · Rajil TLBasics
LANs and Ethernet
A local-area network, or LAN, is a system consisting of • physical links that are, ultimately, serial lines • common…
July 21, 2021 · Rajil TLBasics
Packets Again
Perhaps the core justification for packets, Baran’s concerns about node failure notwithstanding, is that the same link can…
July 21, 2021 · Rajil TLBasics
Congestion
Switches introduce the possibility of congestion: packets arriving faster than they can be sent out. This can happen…
July 21, 2021 · Rajil TLBasics
Routing Loops
A potential drawback to datagram forwarding is the possibility of a routing loop: a set of entries in…
July 21, 2021 · Rajil TLBasics
Traffic Engineering
In some cases the decision above between routes A S1 S2 S4 B and A S1 S3 S4…
July 21, 2021 · Rajil TLBasics
Topology
In the network diagrammed in the previous section, there are no loops; graph theorists might describe this by…
July 21, 2021 · Rajil TLBasics
Datagram Forwarding
In the datagram-forwarding model of packet delivery, packet headers contain a destination address. It is up to the…
July 21, 2021 · Rajil TL