0923a2376f
Change-Id: I87cd2eae133c9f5b9f7764a0f7a41bcc28523e4c Signed-off-by: jdenisco <jdenisco@cisco.com>
18 lines
693 B
ReStructuredText
18 lines
693 B
ReStructuredText
.. _prefixes:
|
|
|
|
Prefixes
|
|
^^^^^^^^
|
|
|
|
Some nomenclature used to describe prefixes:
|
|
|
|
* 1.1.1.1 This is an address since it has no associated mask
|
|
* 1.1.1.0/24 This is a prefix.
|
|
* 1.1.1.1/32 This is a host prefix (the mask length is the size of the address).
|
|
|
|
Prefix A is more specific than B if its mask length is longer, and less specific if
|
|
the mask is shorter. For example, 1.1.1.0/28 is more specific than 1.1.1.0/24. A
|
|
less specific prefix that overlaps with a more specific is the **covering** prefix.
|
|
For example, 1.1.1.0/24 is the covering prefix for 1.1.1.0/28 and 1.1.1.0/28 is termed
|
|
the **covered** prefix. A covering prefix is therefore always less specific than its
|
|
covered prefixes.
|