Transcript Architecture of the NAT-MIB

Architecture of the NAT-MIB
By
Rajiv Raghunarayan
Rohit
Nalinaksh Pai
Agenda
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Introduction
Overview/Structure of the MIB
Open Issues
References
Questions??
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Introduction
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The NAT MIB defines managed objects
used for managing Network Address
Translators (NAT).
Can be accessed at
http://www.ietf.org/internetdrafts/draft-ietf-nat-natmib-00.txt
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Overview of NAT MIB
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The MIB is split into 3 groups
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the configuration group
Pertaining to NAT configuration information
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the bind group
Pertaining to NAT BIND/sessions
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The statistics group
Maintains NAT statistics.
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Overview contd..
The Configuration Group
Consists of four configuration related tables
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natConfTable, the generic configuration table
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natConfStaticAddrMapTable, the static address map table
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natConfDynamicAddrMapTable, the dynamic address map
table
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natInterfaceTable, info regarding interfaces on which NAT is
enabled/active
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Overview contd..
The Bind Group
Consists of two scalars and three tables
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natAddrBindNumberOfEntries and
natAddrPortBindNumberOfEntries, the scalars, hold the number of
entries in the Address and Address-Port Bind tables respectively.
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natAddrBindTable, the list of currently active address mappings
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natAddrPortBindTable, the list of currently active address-port
mappings
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natSessionTable, information regarding active NAT sessions.
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Overview contd..
The Statistics Group
Consists of three statistics tables
 natProtocolStatsTable, NAT statistics per protocol
 natAddrMapStatsTable, NAT statistics per address
map
 natInterfaceStatsTable, NAT statistics per
interface
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Open Issues
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No support for IPv6
RSIP yet to be addressed
Notifications yet to be defined
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References
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Srisuresh, P. and Egevang, K., "Traditional IP
Network Address Translator (Traditional
NAT)", RFC 3022, January 2001.
Srisuresh, P. and M. Holdrege, "NAT
Terminology and Considerations", RFC 2663,
August 1999.
Srisuresh, P., "Framework for interfacing with
Network Address Translator", Work in
Progress, November 2000
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Questions/Comments
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Please send in your
questions/comments to either the
authors or [email protected]
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Thanks 
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