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Addressing
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... switches or stacks of switches may not have
significant impact on addressing, as long as it is remembered that
each system of switches is a single broadcast ...
... port to another within the same "color" VLAN will not
cause major changes in addressing. Many discussions of this
technology do not make it clear that moving the same end station
...
... prefixes for these subnets. This
typically means the addressing and routing plan must support multiple
prefix ...
... To understand how use of NBMA services affects the addressing
structure and routers, it is worth reviewing what would appear to be
...
... Dynamic Addressing ...
... These can include failures of components to understand arbitrary
prefix addressing (i.e., classless routing), reachability due to
...
... CIDR) is the administrative
realization of prefix addressing in the global Internet. Inside
enterprises, arbitrary prefix length ...
... Internet. Inside
enterprises, arbitrary prefix length addressing often is called
Variable Length Subnet Masking (VLSM) or "subnetting a subnet ...
...
The general rules of prefix addressing must be followed in CIDR.
Among these are permitting use of the all-zeroes and all-one subnets ...
... address has been allocated using CIDR rules rather than traditional
classful addressing. If CIDR rules have been followed in address
assignment, then steps need to be taken to assure the router ...
... routing mechanisms
that do not understand arbitrary length prefix addressing is that of
discontiguous networks. This problem is easy to create ...
... hosts do not understand prefix
addressing but routers do. Methods exist for hiding a VLSM structure
...
... Hosts that only understand default routers also are apt only to
understand classful addressing. If the host is told its major (i.e.,
...
... General caveat: tools should know whether the environment supports
classless addressing. If it does not, newly generated addresses
should be checked to see they do not fall into the all-zeroes or
...
... should be examined. If the renumbering process moves the domain to
classless addressing, then serial links can be given addresses with a
...
... Dynamic Addressing Support ...
... PPP. In a renumbering effort, several kinds of changes may made
to be made on routers participating in dynamic addressing.
If the router ...
... routing applications.
In a renumbering effort that involves classless addressing, RIPv1 may
not be able to cope with the new addressing scheme. Officially, this
...
... In a renumbering effort that involves classless addressing, RIPv1 may
not be able to cope with the new addressing scheme. Officially, this
protocol is Historic and should be avoided in new routing plans.
...
... especially if area boundaries change.
Special addressing techniques, such as unnumbered interfaces and
physical interfaces ...
... effort, the need to disable IGRP automatic route summarization needs
to be considered. This is likely if classless addressing is being
implemented.
...
...
IP addressing information can be hard-coded in several aspects of a
BGP speaker. These include:
...
... enterprise.
If dynamic addressing is used, dynamic DNS should be considered.
Since this is under development, it may be appropriate to consider
...