44 lines
2.0 KiB
Plaintext
44 lines
2.0 KiB
Plaintext
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This directory contain 2 new classes - macaddr to store mac addresses
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written by (Bergen, Norway, 1998-01-31, Tom Ivar Helbekkmo
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(tih@Hamartun.Priv.NO)), and ipaddr type and ipaddr_ops operator class,
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rewritten by me (alex@relcom.EU.net, Aleksei Roudnev, Moscow, Russia,
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25.05.98) and written first by Bergen.
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To see the description of macaddr type, read README.ORIG file. To see
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the description of ipaddr type, read ipaddr.html file.
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^^^^^^^^^^^
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This ipaddr type differ slightly from the original one. First, if you
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input '193.124.23.0' it sets /24 prefix instead of /32 (this is in
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accordance to CISCO's notification and our internal data bases and
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records); if you input '0.0.0.0' it's '0.0.0.0/0' (default) but not NULL
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or NOADDR value.
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Then, you can store ADDRESS/PREFIX pair, even if ADDRESS is not the
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subnet address (for example, you can store interface address and mask at
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the single attribute). This allow us to determine, for example, which
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interfaces/routers are accessible by connected network for our interface
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(select * from database where '193.124.23.4' @ interface_address);
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Then, it have been written a few new functions and a few operators
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(addr1 @ addr - TRUE if addr1 is the part of subnet addr2);
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'ipaddr_print' function allow you to convert address to any form you
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want; and so on.
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And then, I add ipi.sql setup script and test1.sql + test2.sql test
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scripts to allow and test indexing by this new class.
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This ipaddr type/opclass are used for our internal IP ROUTING and
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ACCOUNTING data base, and I hope it shpuld be usefull for more people.
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For those who like crazy tasks, I propose to realise 'RTREE' indexing
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method to allow effectively use '@' operation for the binding statistic
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records to the customers etc networks. Note 'ipaddr' type can be written
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as 'start,end' coordination pair and it's possible to define all '<<,
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&<, @@, etc graphical operators over this type.
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25.05.1998, Aleksei Roudnev, alex@relcom.EU.net, Relcom, Moscow, Russia. /+7-095-194-1995.
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==========================================================================================
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