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in the source routing example of section 313 the address received by b is not reversible and doesnt help b know how to
using the example network given in figure 333 give the virtual circuit tables for all the switches after each of the
rfc 791 describes the internet protocol and includes two options for source routing describe three disadvantages of
assume that it takes 32 bits to carry each mpls label that is added to a packet when the shim header of figure 442b is
mpls has sometimes been claimed to improve router performance explain why this might be true and suggest reasons why in
determine if your site is connected to the m bone if so investigate and experiment with any m bone tools such as sdr
consider the example internet shown in figure 459 in which sources d and e send packets to multicast group g whose
suppose a network n within a larger organization a acquires its own direct connection to an internet service provider
an isp with a class b address is working with a new company to allocate it a portion of address space based on cidr the
the telephone system uses geographical addressingwhy do you think this wasnt adopted as a matter of course by the
suppose most of the internet uses some form of geographical addressing but that a large international organization has
in the previous problem assume each provider connects to both others suppose customer pa switches to provider q and
suppose p q and r are network service providers with respective cidr address allocations using the notation of exercise
table 416 is a routing table using cidr address bytes are in hexadecimal the notation 12 in c4500012 denotes a net mask
consider the network shown in figure 456 in which horizontal lines represent transit providers and numbered vertical
a site is shown in figure 457 r1 and r2 are routers r2 connects to the outside world individual lans are ethernets rb
propose a plausible addressing plan for ipv6 that runs out of bits specifically provide a diagram such as figure 433
an alternative method for connecting host c in exercise 41 is to use proxy arp and routing b agrees to route traffic to
ip hosts that are not designated routers are required to drop packets misaddressed to them even if they would otherwise
let a be the number of autonomous systems on the internet and let d for diameter be the maximum as path lengtha give a
give an example of an arrangement of routers grouped into autonomous systems so that the path with the fewest hops from
suppose ip routers learned about ip networks and subnets the way ethernet learning bridges learn about hosts by noting
read the man page or other documentation for the unixwindows utility net stat use net stat to display the current ip
use the unix utility trace route windows tracert to determine how many hops it is from your host to other hosts in the
an organization has a class c network 20011 and wants to form subnets for four departments with hosts as followsa 72