LL(1)

SLR(1) but not LL(1)

LALR(1) but not SLR(1)

LR(1) but not LALR(1)

Recovery from packet losses

Detection of duplicate packets

Packet delivery in the correct order

End to end connectivity

172.57.88.62 and 172.56.87.233

10.35.28.2 and 10.35.29.4

191.203.31.87 and 191.234.31.88

128.8.129.43 and 128.8.161.55

It is possible for a computer to have multiple IP addresses

IP packets from the same source to the same destination can take different routes in the network

IP ensures that a packet is discarded if it is unable to reach its destination within a given number of hops

The packet source cannot set the route of an outgoing packets; the route is determined only by the routing tables in the routers on the way