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+CTRON-ALIAS-MIB DEFINITIONS ::= BEGIN
+
+--  ctron-alias-mib.txt
+--
+--  Part Number:
+--
+--
+
+--  This module provides authoritative definitions for Enterasys
+--  Networks' Alias MIB.
+
+--
+--  This module will be extended, as needed.
+
+--  Enterasys Networks reserves the right to make changes in
+--  specification and other information contained in this document
+--  without prior notice.  The reader should consult Enterasys Networks
+--  to determine whether any such changes have been made.
+--
+--  In no event shall Enterasys Networks be liable for any incidental,
+--  indirect, special, or consequential damages whatsoever (including
+--  but not limited to lost profits) arising out of or related to this
+--  document or the information contained in it, even if Enterasys
+--  Networks has been advised of, known, or should have known, the
+--  possibility of such damages.
+--
+--  Enterasys grants vendors, end-users, and other interested parties
+--  a non-exclusive license to use this Specification in connection
+--  with the management of Enterasys products.
+--
+--  Copyright February, 1999-2013 Enterasys Networks, Inc.
+
+IMPORTS
+    MODULE-IDENTITY, OBJECT-TYPE, Integer32, Gauge32, Counter32,
+         TimeTicks
+              FROM SNMPv2-SMI
+    MODULE-COMPLIANCE, OBJECT-GROUP
+              FROM SNMPv2-CONF
+    TEXTUAL-CONVENTION, MacAddress, TruthValue
+              FROM SNMPv2-TC
+    SnmpAdminString
+              FROM SNMP-FRAMEWORK-MIB
+    InterfaceIndex 
+            FROM IF-MIB
+    TimeFilter
+            FROM RMON2-MIB
+    VlanIndex
+            FROM Q-BRIDGE-MIB
+    EnabledStatus 
+            FROM P-BRIDGE-MIB
+    ctAliasMib
+              FROM CTRON-MIB-NAMES;
+
+cabletronAliasMib MODULE-IDENTITY
+    LAST-UPDATED "201302151430Z"  -- Fri Feb 15 14:30 UTC 2013
+    ORGANIZATION "Enterasys Networks, Inc"
+    CONTACT-INFO
+         "Postal: Enterasys Networks
+                  9 Northeastern Blvd.
+                  Salem, NH 03079 USA
+
+          Phone:  +1 603 952 5000
+          E-mail: support@enterasys.com
+          WWW:    http://www.enterasys.com"
+
+    DESCRIPTION
+        "This MIB module defines a portion of the MIB tree
+         under the Enterasys enterprise OID. This branch 
+         defines Enterasys Networks' proprietary Node Alias
+         feature.
+
+         This MIB defines objects which can be used to discover 
+         end systems per port, and to map end system addresses
+         to the layer 2 address of the port."
+
+    REVISION    "201302151430Z"  -- Fri Feb 15 14:30 UTC 2013
+    DESCRIPTION "Added ctAliasInterfaceTable. Also added mdns, 
+                 llmnr, and ssdp as supported protocols."
+
+    REVISION    "201102141525Z"  -- Mon Feb 14 15:25 UTC 2011
+    DESCRIPTION "Added IPv6 as a supported protocol.
+                 Added the CabletronProtocolBits TEXTUAL-CONVENTION
+                 and ctAliasConfigurationProtocolEnableState
+                 object."
+    
+    REVISION    "200304221339Z"  -- Tue Apr 22 13:39 GMT 2003
+    DESCRIPTION "Added the ctAliasMacAddressTable and
+                 ctAliasProtocolAddressTable. Added the objects
+                 ctAliasEntryStatus and ctAliasEntryClearAll.
+                 Deprecated the object ctAliasMarkInactive."
+
+    REVISION    "200201301301Z"  -- Wed Jan 30 13:01 GMT 2002
+    DESCRIPTION "Added the optional ctAliasConfigurationTable."
+
+    REVISION    "200201232056Z"  -- Wed Jan 23 20:56 GMT 2002
+    DESCRIPTION "Added ctAliasAddressText leaf with the syntax of
+                 SnmpAdminString."
+
+    REVISION    "200201182022Z"  -- Fri Jan 18 20:22 GMT 2002
+    DESCRIPTION "Added textual convention AliasAddress.  Changed
+                 the syntax for ctAliasAddress from SnmpAdminString
+                 to AliasAddress.  Added ranges to ctAliasReference
+                 and ctAliasID."
+
+    REVISION    "199909260000Z"
+    DESCRIPTION "Moved the CabletronProtocolTC enumeration value 
+                 unknown to unknown(0).  Updated textual descriptions."
+
+    REVISION    "199909040000Z"
+    DESCRIPTION "Changed removed the ctAliasProtocolDirLocalID.
+                 Updated units of conformance and compliance
+                 statements."
+
+    REVISION    "199908060000Z"
+    DESCRIPTION "Changed object naming to be more cabletron-general.
+                 Changed indexing to simplify access."
+
+    REVISION    "199907280000Z"
+    DESCRIPTION "The initial version of this MIB module"
+
+         ::= { ctAliasMib 1 } 
+
+-- Textual Conventions
+
+CabletronProtocolTC ::= TEXTUAL-CONVENTION
+    STATUS  current
+    DESCRIPTION
+        "Identifies the type of protocol address."
+    SYNTAX  INTEGER {
+                   unknown(0),
+                   ip(1), -- IPv4 
+                   apl(2),
+                   mac(3),
+                   hsrp(4),
+                   dhcps(5),
+                   dhcpc(6),
+                   bootps(7),
+                   bootpc(8),
+                   ospf(9),
+                   vrrp(10),
+                   ipx(11),
+                   xrip(12),
+                   xsap(13),
+                   xnlsp(14),
+                   ipx20(15),
+                   rtmp(16),
+                   netBios(17),
+                   nbt(18),
+                   n802q(19),
+                   bgp(20),
+                   rip(21),
+                   igrp(22),
+                   dec(23),
+                   bpdu(24),
+                   udp(25),
+                   ipv6(26),
+                   mdns(27),
+                   llmnr(28),
+                   ssdp(29)
+    }
+
+AliasAddress ::= TEXTUAL-CONVENTION
+    DISPLAY-HINT "1x "
+    STATUS       current
+    DESCRIPTION
+        "Represents layer 3 or higher addresses."
+    SYNTAX       OCTET STRING (SIZE (0..32))
+
+CabletronProtocolBits ::= TEXTUAL-CONVENTION
+    STATUS  current
+    DESCRIPTION
+        "The list of protocol types that can be enabled for 
+         nodeAlias entries."
+    SYNTAX  BITS {
+                   unknown(0),
+                   ipv4(1),
+                   apl(2),
+                   mac(3),
+                   hsrp(4),
+                   dhcps(5),
+                   dhcpc(6),
+                   bootps(7),
+                   bootpc(8),
+                   ospf(9),
+                   vrrp(10),
+                   ipx(11),
+                   xrip(12),
+                   xsap(13),
+                   xnlsp(14),
+                   ipx20(15),
+                   rtmp(16),
+                   netBios(17),
+                   nbt(18),
+                   n802q(19),
+                   bgp(20),
+                   rip(21),
+                   igrp(22),
+                   dec(23),
+                   bpdu(24),
+                   udp(25),
+                   ipv6(26),
+                   mdns(27),
+                   llmnr(28),
+                   ssdp(29)
+                }
+
+
+-- branches used in this MIB
+
+   ctAlias OBJECT IDENTIFIER ::= { cabletronAliasMib 1 }
+   
+-- Alias Table
+
+ctAliasTable OBJECT-TYPE
+    SYNTAX  SEQUENCE OF CtAliasEntry
+    MAX-ACCESS   not-accessible
+    STATUS  current
+    DESCRIPTION
+        "The ctAliasTable contains information about the aliases
+         known by the agent.  This table is indexed using a unique
+         and arbitrary ID and a TimeFilter to allow a management
+         station to learn all alias entries that have been modified
+         since time X.  This table is NOT designed to do a single
+         GET.  This Table is designed for MIB Walks only.
+
+         This table contains objects that map upper-layer 
+         network services and entities to the physical location 
+         of the associated port, and the MAC address of the
+         associated end-system (node).
+
+         All entries in this table are deleted when sysUpTime
+         is reset to zero.
+
+         This table allows for a time filtered view.  It is useful 
+         for determining what has been modified in the Alias Table 
+         since a specified time.
+
+         If a management station reads the ctAliasTable
+         of an entity at time X, subsequent updates can be 
+         realized by performing get-next requests of this
+         table to determine which entries have been modified 
+         since time X. Then the management station can use
+         GET requests to retrieve only the records of interest
+         from the Alias table. 
+
+         There is a delay between retrieving the Alias Reference 
+         values from this table, and a GET request to retrieve a 
+         modified row from the Alias table. The management 
+         station should be prepared for two possibilities:
+         1) the GET request may fail if the Alias table entry 
+         has been deleted during the delay, and 2) the 
+         entry may have been modified during the delay, so the
+         modification time of the retrieved entry may differ from 
+         the modification time of the Delta entry.
+
+         If the entry in the Alias Control table identified by 
+         ctAliasID is marked inactive by management request, and 
+         subsequently deleted to free resources, all corresponding 
+         entries in this table are also deleted.
+
+         If the agent needs to free resources, it can delete
+         entries from this table. It SHOULD first remove those
+         which have been marked inactive in the ctAliasControlTable, 
+         then it SHOULD remove those entries with the oldest 
+         modification times." 
+    ::= { ctAlias 1 }
+
+ctAliasEntry OBJECT-TYPE
+    SYNTAX  CtAliasEntry
+    MAX-ACCESS   not-accessible
+    STATUS  current
+    DESCRIPTION
+        "Each entry contains information pertaining to 
+         the alias of a node."
+    INDEX   { ctAliasTimeFilter, ctAliasReference }
+    ::=     { ctAliasTable 1 }
+
+CtAliasEntry ::=
+    SEQUENCE 
+    {
+            ctAliasTimeFilter         TimeFilter,
+            ctAliasReference          Integer32,
+            ctAliasInterface          InterfaceIndex,
+            ctAliasMacAddress         MacAddress,
+            ctAliasVlanID             VlanIndex,
+            ctAliasProtocol           CabletronProtocolTC,
+            ctAliasAddress            AliasAddress,
+            ctAliasIsActive           TruthValue,
+            ctAliasAddressText        SnmpAdminString
+    }
+
+ctAliasTimeFilter  OBJECT-TYPE
+    SYNTAX  TimeFilter
+    MAX-ACCESS  not-accessible
+    STATUS  current
+    DESCRIPTION
+        "The value of sysUpTime when this entry 
+         was last modified."
+    ::= { ctAliasEntry 1 }
+
+ctAliasReference  OBJECT-TYPE
+    SYNTAX  Integer32 (0..2147483647)
+    MAX-ACCESS  not-accessible
+    STATUS  current
+    DESCRIPTION
+        "An integer ID assigned by the agent. The value of this
+                     object is equal to an existing ctAliasID."
+    ::= { ctAliasEntry 2 }
+
+ctAliasInterface OBJECT-TYPE
+    SYNTAX InterfaceIndex 
+    MAX-ACCESS  read-only
+    STATUS current
+    DESCRIPTION
+        "The ifIndex of the interface on which this entry was 
+         discovered.
+
+         The ifIndex is an 'external value' that identifies a 
+         physical component associated with the Alias entry.
+         This object can be used to identify the physical
+         location of the interface in the ifTable [RFC2863].  
+
+         The possibility of ifIndex value re-assignment must be
+         accommodated by a management application whenever the 
+         value of sysUpTime is reset to zero.
+
+         Since ifIndex values in different 'naming scopes' are 
+         not related to one another, the interface to physical 
+         component associations are relative to the same
+         logical entity within the agent. For more discussion 
+         of naming scopes, see the ENTITY-MIB [RFC2037]"
+    ::= { ctAliasEntry 3 }
+
+ctAliasMacAddress OBJECT-TYPE
+    SYNTAX MacAddress
+    MAX-ACCESS  read-only
+    STATUS current
+    DESCRIPTION
+        "The MAC address associated with this alias.  
+
+         The TEXTUAL-CONVENTION MacAddress is defined in
+         SNMPv2-TC as an 802 MAC address represented in 
+         'canonical' order as defined by IEEE 802.1a,
+         i.e., as if it were transmitted least significant
+         bit first."
+    ::= { ctAliasEntry 4 }
+
+ctAliasVlanID OBJECT-TYPE
+    SYNTAX VlanIndex
+    MAX-ACCESS  read-only
+    STATUS current
+    DESCRIPTION
+        "The VLAN ID contained in the header of the message
+         associated with this alias.
+
+         On agents which support this MIB but do not support
+         VLANs, the value for this object MUST be (1)."
+    ::= { ctAliasEntry 5 }
+
+ctAliasProtocol OBJECT-TYPE
+    SYNTAX  CabletronProtocolTC
+    MAX-ACCESS  read-only
+    STATUS  current
+    DESCRIPTION
+        "The address type of this alias address."
+    ::= { ctAliasEntry 6 }
+
+ctAliasAddress OBJECT-TYPE
+    SYNTAX       AliasAddress
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The address associated with this entry.  The exact
+         format of this object will depend upon the protocol
+         type in ctAliasProtocol.  The value returned for
+         this object MUST be in a non-textual format."
+    ::= { ctAliasEntry 7 }
+
+ctAliasIsActive  OBJECT-TYPE
+    SYNTAX  TruthValue
+    MAX-ACCESS  read-only
+    STATUS  current
+    DESCRIPTION
+        "The status of this entry.
+
+         A true(1) value indicates the alias is active.
+
+         A false(2) value indicates an entry which has 
+         been marked inactive by network management, using the
+         ctAliasEntryStatus object in the ctAliasControlTable.  
+
+         Entries which have been marked inactive may remain in 
+         the table to allow consistent mappings between network 
+         management stations until an agent needs to free 
+         resources."
+    ::= { ctAliasEntry 8 }
+
+ctAliasAddressText OBJECT-TYPE
+    SYNTAX       SnmpAdminString
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The address associated with this entry in a human
+         readable textual format."
+    ::= { ctAliasEntry 9 }
+
+-- Alias Control Table
+
+ctAliasControlTable OBJECT-TYPE
+    SYNTAX  SEQUENCE OF CtAliasControlEntry
+    MAX-ACCESS   not-accessible
+    STATUS  current
+    DESCRIPTION
+        "This table allows for control of Alias entries.
+
+         Currently control is limited to marking entries
+         as marked for deletion.
+
+         If the entry in the Alias Control table identified by 
+         ctAliasID is marked inactive by management request, and 
+         subsequently deleted to free resources, all corresponding 
+         entries in the ctAlias table are also deleted.
+
+         All entries in this table are deleted when sysUpTime
+         is reset to zero."
+
+     ::= { ctAlias 2 }
+
+ctAliasControlEntry OBJECT-TYPE
+    SYNTAX  CtAliasControlEntry
+    MAX-ACCESS   not-accessible
+    STATUS  current
+    DESCRIPTION
+        "Each entry contains a unique identifier of an Alias 
+         entry and a control object to mark the entry as 
+         'marked for deletion'."
+    INDEX   { ctAliasID }
+    ::=     { ctAliasControlTable 1 }
+
+CtAliasControlEntry ::=
+    SEQUENCE 
+    {
+            ctAliasID               Integer32,
+            ctAliasMarkInactive     TruthValue,
+            ctAliasEntryStatus      INTEGER
+    }
+
+ctAliasID  OBJECT-TYPE
+    SYNTAX  Integer32 (0..2147483647)
+    MAX-ACCESS  not-accessible
+    STATUS  current
+    DESCRIPTION
+        "A unique and arbitrary integer ID assigned
+         by the agent to identify this entry. 
+
+         Each identifier must not be reused until the agent
+         is re-initialized, i.e. sysUpTime is reset to zero."
+    ::= { ctAliasControlEntry 1 }
+
+ctAliasMarkInactive  OBJECT-TYPE
+    SYNTAX TruthValue
+    MAX-ACCESS read-write
+    STATUS deprecated
+    DESCRIPTION
+        "This object provides the control to mark this entry
+         to inactive. 
+
+         When an entry is created by the agent, this is set to
+         false(2). A network management application can set this
+         value to true(1), indicating that the entry is no longer
+         needed. Once this object has been set to true(1), it
+         cannot be set to false(2). 
+
+         If the alias is detected again by the agent, the agent
+         may create a new entry for the Alias.
+
+         When an agent needs to free up resources, it may choose
+         to delete those entries marked inactive."
+    ::= { ctAliasControlEntry 2 }
+
+ctAliasEntryStatus OBJECT-TYPE
+    SYNTAX INTEGER 
+    {
+           active(1),
+           inactive(2),
+           remove(3)
+    }
+    MAX-ACCESS read-write
+    STATUS current
+    DESCRIPTION
+        "This object provides the control to remove or inactivate
+         entries that are no longer needed.
+
+         active(1)   - indicates that this entry is active.
+
+         inactive(2) - indicates that this entry is no longer of any
+                       interest and can be removed, as needed, by
+                       the entity. If the alias is marked inactive
+                       and is seen again by the agent, the alias
+                       ID's status will be changed to active.
+
+         remove(3)   - indicates that the agent SHOULD immediately
+                       remove the entry from the table. If the alias
+                       is seen again by the agent after having been 
+                       removed, it will be added as a new aliasID."
+    ::= { ctAliasControlEntry 3 }
+
+         
+-- Alias Table Statistics
+
+ctAliasStats  OBJECT IDENTIFIER ::= { ctAlias 3 }
+
+ctAliasTableStatsTotalEntries  OBJECT-TYPE
+    SYNTAX  Gauge32
+    MAX-ACCESS      read-only
+    STATUS   current
+    DESCRIPTION
+        "The total number of entries in the ctAliasControlTable."
+    ::=      { ctAliasStats 1 }
+
+ctAliasTableStatsActiveEntries OBJECT-TYPE
+    SYNTAX  Gauge32
+    MAX-ACCESS      read-only
+    STATUS   current
+    DESCRIPTION
+        "The total number of active entries in the 
+         ctAliasControlTable."
+    ::=      { ctAliasStats 2 }
+
+ctAliasTableStatsPurgeTime OBJECT-TYPE
+    SYNTAX  TimeTicks
+    MAX-ACCESS      read-only
+    STATUS   current
+    DESCRIPTION
+        "System time of the most recent purge."
+    ::=      { ctAliasStats 3 }
+
+ctAliasTableStatsState OBJECT-TYPE
+    SYNTAX  INTEGER
+    {
+                notStarted(1),
+                ready(2),
+                full(3)
+    }
+    MAX-ACCESS      read-only
+    STATUS   current
+    DESCRIPTION
+        "Current Alias Table state.
+
+            notStarted(1) indicates the agent has not 
+            completed any required start up routines and
+            therefore the ctAliasTable and ctAliasControlTable
+            are not currently valid.
+
+            ready(2) indicates that the agent has completed 
+            all initialization procedures and that the alias 
+            MIB is running properly.
+
+            full(3) indicates that due to memory restrictions
+            on the agent, the ctaliasTable has reached the 
+            maximum number of entries possible.
+
+            NOTE: If an agent is using a circular queue design, 
+            then the state of full(3) will never be set."
+    ::=       { ctAliasStats 4 }
+
+
+-- Alias Configuration
+
+ctAliasConfiguration OBJECT IDENTIFIER ::= { ctAlias 4 }
+
+ctAliasConfigurationSystemAllocatedEntries  OBJECT-TYPE
+    SYNTAX Gauge32 
+    MAX-ACCESS  read-only
+    STATUS  current
+    DESCRIPTION
+        "The total number of alias entries allocated."
+    ::= { ctAliasConfiguration 1 }
+
+ctAliasConfigurationSystemTotalEntries  OBJECT-TYPE
+    SYNTAX Gauge32 
+    MAX-ACCESS  read-only
+    STATUS  current
+    DESCRIPTION
+        "The total number of alias entries available to be allocated
+         for this system."
+    ::= { ctAliasConfiguration 2 }
+
+ctAliasConfigurationTable OBJECT-TYPE
+    SYNTAX  SEQUENCE OF CtAliasConfigurationEntry
+    MAX-ACCESS   not-accessible
+    STATUS  current
+    DESCRIPTION
+        "This table is used to prevent any single chatty
+         port from monopolizing all of the available alias 
+         buffers in the system by letting an administrator
+         tune each port."
+     ::= { ctAliasConfiguration 3 }
+
+ctAliasConfigurationEntry OBJECT-TYPE
+    SYNTAX  CtAliasConfigurationEntry
+    MAX-ACCESS   not-accessible
+    STATUS  current
+    DESCRIPTION
+        "Each entry contains an enable/disable control variable
+         and variables showing the number of maximum allowable 
+         and currently used entries."
+    INDEX   { ctAliasInterface }
+    ::=     { ctAliasConfigurationTable 1 }
+
+CtAliasConfigurationEntry ::=
+    SEQUENCE 
+    {
+        ctAliasConfigurationInterfaceTotalEntries Gauge32,
+        ctAliasConfigurationInterfaceMaxEntries   Gauge32,
+        ctAliasConfigurationInterfaceEnableState  EnabledStatus,
+        ctAliasConfigurationNumQueueWraps         Counter32
+    }
+
+ctAliasConfigurationInterfaceTotalEntries  OBJECT-TYPE
+    SYNTAX  Gauge32
+    MAX-ACCESS  read-only
+    STATUS  current
+    DESCRIPTION
+        "The total number of alias entries currently in
+         use by this ctAliasInterface."
+    ::= { ctAliasConfigurationEntry 1 }
+
+ctAliasConfigurationInterfaceMaxEntries OBJECT-TYPE
+    SYNTAX  Gauge32
+    MAX-ACCESS  read-write
+    STATUS  current
+    DESCRIPTION
+        "This object represents the maximum number of 
+         alias entries in the ctAliasTable which were 
+         created by this ctAliasInterface. When the object
+         ctAliasConfigurationInterfaceTotalEntries
+         equals this object, the next alias appearing 
+         on this ctAliasInterface causes the oldest entry 
+         created by this ctAliasInterface to be deleted. 
+         The sum of this object across all ctAliasInterface 
+         shall not exceed ctAliasConfigurationSystemTotalEntries. 
+         If the value of this object is increased, then oldest 
+         entry removal ceases until the maximum is reached 
+         again. If management reduces the value of this 
+         object, then, starting with the oldest, alias 
+         entries are removed until the new number of 
+         entries is reached."
+    ::= { ctAliasConfigurationEntry 2 }
+
+ctAliasConfigurationInterfaceEnableState  OBJECT-TYPE
+    SYNTAX  EnabledStatus
+    MAX-ACCESS  read-write
+    STATUS  current
+    DESCRIPTION
+        "The enable state of the alias agent on this
+         ctAliasInterface."
+    DEFVAL { enabled }
+    ::= { ctAliasConfigurationEntry 3 }
+
+ctAliasConfigurationNumQueueWraps  OBJECT-TYPE
+    SYNTAX  Counter32
+    MAX-ACCESS  read-only
+    STATUS  current
+    DESCRIPTION
+        "This object represents the number of times the queue for
+         this ctAliasConfigurationEntry has wrapped.  Since circular
+         queues are used for storing the entries, when all allocated
+         entries are used, the oldest entries are reused, thus
+         creating a wrap condition.  A value of zero indicates the
+         queue has not wrapped, except in the case that the counter
+         itself has wrapped."
+    ::= { ctAliasConfigurationEntry 4 }
+
+ctAliasConfigurationProtocolEnableState  OBJECT-TYPE
+    SYNTAX CabletronProtocolBits
+    MAX-ACCESS  read-write
+    STATUS  current
+    DESCRIPTION
+        "A bit field of the protocol types where a set indicates the
+         detection of that protocol is enabled.  A bit position with
+         a cleared bit indicates detection of that protocol is not
+         enabled."
+    ::= { ctAliasConfiguration 4 }
+
+
+-- Alias Mac Address Table
+
+ctAliasMacAddressTable OBJECT-TYPE
+    SYNTAX SEQUENCE OF CtAliasMacAddressEntry
+    MAX-ACCESS   not-accessible
+    STATUS       current
+    DESCRIPTION
+        "The ctAliasMacAddressTable contains information about
+         the aliases known by the agent indexed by MAC address
+         and protocol.
+
+         This table contains information that is identical to
+         the ctAliasTable, but it is instanced by MAC address
+         and protocol to allow management entities to search for
+         a MAC address and protocol, or part of a MAC address
+         and protocol, using a single SNMP GetNext request."
+     ::= { ctAlias 5 }
+
+ctAliasMacAddressEntry OBJECT-TYPE
+    SYNTAX       CtAliasMacAddressEntry
+    MAX-ACCESS   not-accessible
+    STATUS       current
+    DESCRIPTION
+        "Each entry contains information pertaining to the alias
+         of a node in a table indexed by MAC address, protocol
+         type, protocol address, and alias ID."
+    INDEX   { ctAliasMacAddress, ctAliasProtocol,
+              ctAliasAddress, ctAliasReference }
+    ::= { ctAliasMacAddressTable 1 }
+
+CtAliasMacAddressEntry ::=
+    SEQUENCE 
+    {
+         ctAliasMacAddressInterface     InterfaceIndex,
+         ctAliasMacAddressVlanID        VlanIndex,
+         ctAliasMacAddressIsActive      TruthValue,
+         ctAliasMacAddressAddressText   SnmpAdminString,
+         ctAliasMacAddressTime          TimeTicks
+    }
+
+ctAliasMacAddressInterface OBJECT-TYPE
+    SYNTAX       InterfaceIndex 
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The ifIndex of the interface on which this entry was 
+         discovered.
+
+         The ifIndex is an 'external value' that identifies a 
+         physical component associated with the Alias entry.
+         This object can be used to identify the physical
+         location of the interface in the ifTable [RFC2863].  
+
+         The possibility of ifIndex value re-assignment must be
+         accommodated by a management application whenever the 
+         value of sysUpTime is reset to zero.
+
+         Since ifIndex values in different 'naming scopes' are 
+         not related to one another, the interface to physical 
+         component associations are relative to the same
+         logical entity within the agent. For more discussion 
+         of naming scopes, see the ENTITY-MIB [RFC2037]"
+    ::= { ctAliasMacAddressEntry 1 }
+
+ctAliasMacAddressVlanID OBJECT-TYPE
+    SYNTAX       VlanIndex
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The VLAN ID contained in the header of the message
+         associated with this alias.
+
+         On agents which support this MIB but do not support
+         VLANs, the value for this object MUST be (1)."
+    ::= { ctAliasMacAddressEntry 2 }
+
+ctAliasMacAddressIsActive  OBJECT-TYPE
+    SYNTAX       TruthValue
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The status of this entry.
+
+         A true(1) value indicates the alias is active.
+
+         A false(2) value indicates an entry which has 
+         been marked inactive by network management, using the
+         ctAliasEntryStatus object in the ctAliasControlTable.  
+
+         Entries which have been marked inactive may remain in 
+         the table to allow consistent mappings between network 
+         management stations until an agent needs to free 
+         resources."
+    ::= { ctAliasMacAddressEntry 3 }
+
+ctAliasMacAddressAddressText OBJECT-TYPE
+    SYNTAX       SnmpAdminString
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The address associated with this entry in a human
+         readable textual format."
+    ::= { ctAliasMacAddressEntry 4 }
+
+ctAliasMacAddressTime  OBJECT-TYPE
+    SYNTAX       TimeTicks
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The value of sysUpTime when this entry was last modified."
+    ::= { ctAliasMacAddressEntry 5 }
+
+
+-- Alias Protocol Address Table
+
+ctAliasProtocolAddressTable  OBJECT-TYPE
+    SYNTAX SEQUENCE OF CtAliasProtocolAddressEntry
+    MAX-ACCESS   not-accessible
+    STATUS       current
+    DESCRIPTION
+        "The ctAliasProtocolAddressTable contains information
+         about the aliases known by the agent indexed by protocol
+         and address.
+
+         This table contains information that is identical to the
+         ctAliasTable, but it is instanced by protocol and address
+         to allow management entities to search for a protocol and
+         address, or part of a protocol and address, using a
+         single SNMP GetNext request."
+    ::= { ctAlias 6 }
+
+ctAliasProtocolAddressEntry OBJECT-TYPE
+    SYNTAX       CtAliasProtocolAddressEntry
+    MAX-ACCESS   not-accessible
+    STATUS       current
+    DESCRIPTION
+        "Each entry contains information pertaining to the alias
+         of a node in a table indexed by protocol type, protocol
+         address, MAC address, and alias ID."
+         INDEX   { ctAliasProtocol, ctAliasAddress,
+                   ctAliasMacAddress, ctAliasReference }
+    ::= { ctAliasProtocolAddressTable 1 }
+
+CtAliasProtocolAddressEntry ::=
+    SEQUENCE 
+    {
+         ctAliasProtocolAddressInterface     InterfaceIndex,
+         ctAliasProtocolAddressVlanID        VlanIndex,
+         ctAliasProtocolAddressIsActive      TruthValue,
+         ctAliasProtocolAddressAddressText   SnmpAdminString,
+         ctAliasProtocolAddressTime          TimeTicks
+    }
+
+ctAliasProtocolAddressInterface OBJECT-TYPE
+    SYNTAX       InterfaceIndex 
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The ifIndex of the interface on which this entry was 
+         discovered.
+
+         The ifIndex is an 'external value' that identifies a 
+         physical component associated with the Alias entry.
+         This object can be used to identify the physical
+         location of the interface in the ifTable [RFC2863].  
+
+         The possibility of ifIndex value re-assignment must be
+         accommodated by a management application whenever the 
+         value of sysUpTime is reset to zero.
+
+         Since ifIndex values in different 'naming scopes' are 
+         not related to one another, the interface to physical 
+         component associations are relative to the same
+         logical entity within the agent. For more discussion 
+         of naming scopes, see the ENTITY-MIB [RFC2037]"
+    ::= { ctAliasProtocolAddressEntry 1 }
+
+ctAliasProtocolAddressVlanID OBJECT-TYPE
+    SYNTAX       VlanIndex
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The VLAN ID contained in the header of the message
+         associated with this alias.
+
+         On agents which support this MIB but do not support
+         VLANs, the value for this object MUST be (1)."
+    ::= { ctAliasProtocolAddressEntry 2 }
+
+ctAliasProtocolAddressIsActive  OBJECT-TYPE
+    SYNTAX       TruthValue
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The status of this entry.
+
+         A true(1) value indicates the alias is active.
+
+         A false(2) value indicates an entry which has 
+         been marked inactive by network management, using the
+         ctAliasEntryStatus object in the ctAliasControlTable.  
+
+         Entries which have been marked inactive may remain in 
+         the table to allow consistent mappings between network 
+         management stations until an agent needs to free 
+         resources."
+    ::= { ctAliasProtocolAddressEntry 3 }
+
+ctAliasProtocolAddressAddressText OBJECT-TYPE
+    SYNTAX       SnmpAdminString
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The address associated with this entry in a human
+         readable textual format."
+    ::= { ctAliasProtocolAddressEntry 4 }
+
+ctAliasProtocolAddressTime  OBJECT-TYPE
+    SYNTAX       TimeTicks
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The value of sysUpTime when this entry was last modified."
+    ::= { ctAliasProtocolAddressEntry 5 }
+
+
+-- Alias Table Clear object
+
+ctAliasEntryClearAll  OBJECT-TYPE
+    SYNTAX       TruthValue
+    MAX-ACCESS   read-write
+    STATUS       current
+    DESCRIPTION
+        "This object is used to remove all of the alias entries
+         from all of the tables.
+
+         When set to true(1) all known aliases will be immediately
+         removed from all of their respective tables.
+
+         A read will always return false(2)."
+    ::= { ctAlias 7 }
+
+
+-- Alias Interface Table
+
+
+ctAliasInterfaceTable OBJECT-TYPE
+    SYNTAX SEQUENCE OF CtAliasInterfaceEntry
+    MAX-ACCESS   not-accessible
+    STATUS       current
+    DESCRIPTION
+        "The ctAliasInterfaceTable contains information about
+         the aliases known by the agent indexed by interface 
+         address and alias ID.
+
+         This table contains information that is identical to
+         the ctAliasTable, but it is instanced by interface address
+         and alias ID to allow management entities to search for
+         an interface address, using a single SNMP GetNext request."
+     ::= { ctAlias 8 }
+
+ctAliasInterfaceEntry OBJECT-TYPE
+    SYNTAX       CtAliasInterfaceEntry
+    MAX-ACCESS   not-accessible
+    STATUS       current
+    DESCRIPTION
+        "Each entry contains information pertaining to the alias
+         of a node in a table indexed by  interface address and 
+         alias ID."
+    INDEX { ctAliasInterface, ctAliasReference }  
+    ::= { ctAliasInterfaceTable 1 }
+
+CtAliasInterfaceEntry ::=
+    SEQUENCE 
+    {
+         ctAliasInterfaceMacAddress     MacAddress,
+         ctAliasInterfaceProtocol       CabletronProtocolTC,
+         ctAliasInterfaceAddress        AliasAddress,
+         ctAliasInterfaceVlanID         VlanIndex,
+         ctAliasInterfaceIsActive       TruthValue,
+         ctAliasInterfaceAddressText    SnmpAdminString,
+         ctAliasInterfaceTime           TimeTicks
+    }
+
+ctAliasInterfaceMacAddress OBJECT-TYPE
+    SYNTAX MacAddress
+    MAX-ACCESS  read-only
+    STATUS current
+    DESCRIPTION
+        "The MAC address associated with this alias.  
+
+         The TEXTUAL-CONVENTION MacAddress is defined in
+         SNMPv2-TC as an 802 MAC address represented in 
+         'canonical' order as defined by IEEE 802.1a,
+         i.e., as if it were transmitted least significant
+         bit first."
+    ::= { ctAliasInterfaceEntry 1 }
+
+ctAliasInterfaceProtocol OBJECT-TYPE
+    SYNTAX  CabletronProtocolTC
+    MAX-ACCESS  read-only
+    STATUS  current
+    DESCRIPTION
+        "The address type of this alias address."
+    ::= { ctAliasInterfaceEntry 2 }
+
+ctAliasInterfaceAddress OBJECT-TYPE
+    SYNTAX       AliasAddress
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The address associated with this entry.  The exact
+         format of this object will depend upon the protocol
+         type in ctAliasInterfaceProtocol.  The value returned 
+         for this object MUST be in a non-textual format."
+    ::= { ctAliasInterfaceEntry 3 }
+
+ctAliasInterfaceVlanID OBJECT-TYPE
+    SYNTAX       VlanIndex
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The VLAN ID contained in the header of the message
+         associated with this alias.
+
+         On agents which support this MIB but do not support
+         VLANs, the value for this object MUST be (1)."
+    ::= { ctAliasInterfaceEntry 4 }
+
+ctAliasInterfaceIsActive  OBJECT-TYPE
+    SYNTAX       TruthValue
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The status of this entry.
+
+         A true(1) value indicates the alias is active.
+
+         A false(2) value indicates an entry which has 
+         been marked inactive by network management, using the
+         ctAliasEntryStatus object in the ctAliasControlTable.  
+
+         Entries which have been marked inactive may remain in 
+         the table to allow consistent mappings between network 
+         management stations until an agent needs to free 
+         resources."
+    ::= { ctAliasInterfaceEntry 5 }
+
+ctAliasInterfaceAddressText OBJECT-TYPE
+    SYNTAX       SnmpAdminString
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The address associated with this entry in a human
+         readable textual format."
+    ::= { ctAliasInterfaceEntry 6 }
+
+ctAliasInterfaceTime  OBJECT-TYPE
+    SYNTAX       TimeTicks
+    MAX-ACCESS   read-only
+    STATUS       current
+    DESCRIPTION
+        "The value of sysUpTime when this entry was last modified."
+    ::= { ctAliasInterfaceEntry 7 }
+
+-- -------------------------------------------------------------
+--  Conformance Information
+-- -------------------------------------------------------------
+
+ctAliasConformance OBJECT IDENTIFIER
+    ::= { ctAliasMib 2 }
+
+ctAliasGroups OBJECT IDENTIFIER 
+    ::= { ctAliasConformance 1 }
+
+ctAliasCompliances OBJECT IDENTIFIER
+    ::= { ctAliasConformance 2 }
+
+-- -------------------------------------------------------------
+-- units of conformance
+-- -------------------------------------------------------------
+
+ctAliasBasicGroup OBJECT-GROUP
+    OBJECTS {
+             ctAliasInterface,
+             ctAliasMacAddress,
+             ctAliasVlanID,
+             ctAliasProtocol,
+             ctAliasAddress,
+             ctAliasIsActive,
+             ctAliasAddressText
+    }
+    STATUS   current
+    DESCRIPTION
+        "A collection of objects for the discovery and mapping
+         of end systems and aliases."
+    ::= { ctAliasGroups 1 }
+
+ctAliasStatsGroup OBJECT-GROUP
+    OBJECTS {
+             ctAliasTableStatsTotalEntries,
+             ctAliasTableStatsActiveEntries,
+             ctAliasTableStatsPurgeTime,
+             ctAliasTableStatsState
+    }
+    STATUS   current
+    DESCRIPTION
+        "A collection of objects pertaining to discovery and mapping
+         of end systems and aliases."
+    ::= { ctAliasGroups 2 }
+
+
+ctAliasControlGroup OBJECT-GROUP
+    OBJECTS {
+             ctAliasMarkInactive
+    }
+    STATUS   deprecated
+    DESCRIPTION
+        "This group has been deprecated. See ctAliasControlGroupI."
+   ::= { ctAliasGroups 3 }
+
+ctAliasConfigurationGroup OBJECT-GROUP
+    OBJECTS {
+             ctAliasConfigurationSystemAllocatedEntries,
+             ctAliasConfigurationSystemTotalEntries,
+             ctAliasConfigurationInterfaceTotalEntries,
+             ctAliasConfigurationInterfaceMaxEntries,
+             ctAliasConfigurationInterfaceEnableState 
+    }
+    STATUS   deprecated
+    DESCRIPTION
+        "A collection of objects for configuring port buffer queues."
+    ::= { ctAliasGroups 4 }
+
+ctAliasMacAddressGroup  OBJECT-GROUP
+    OBJECTS {
+             ctAliasMacAddressInterface,
+             ctAliasMacAddressVlanID,
+             ctAliasMacAddressIsActive,
+             ctAliasMacAddressAddressText,
+             ctAliasMacAddressTime
+    }
+    STATUS   current
+    DESCRIPTION
+        "A collection of objects for the discovery and mapping
+         of end systems and aliases."
+    ::= { ctAliasGroups 5 }
+
+ctAliasProtocolAddressGroup  OBJECT-GROUP
+    OBJECTS {
+             ctAliasProtocolAddressInterface,
+             ctAliasProtocolAddressVlanID,
+             ctAliasProtocolAddressIsActive,
+             ctAliasProtocolAddressAddressText,
+             ctAliasProtocolAddressTime
+    }
+    STATUS   current
+    DESCRIPTION
+        "A collection of objects for the discovery and mapping
+         of end systems and aliases."
+    ::= { ctAliasGroups 6 }
+
+ctAliasControlGroupI OBJECT-GROUP
+    OBJECTS {
+             ctAliasEntryStatus
+    }
+    STATUS   current
+    DESCRIPTION
+        "A collection of objects which make the Aliases accessible 
+         using the TimeFilter TEXTUAL CONVENTION."
+    ::= { ctAliasGroups 7 }
+
+ctAliasGroup OBJECT-GROUP
+     OBJECTS {
+              ctAliasEntryClearAll
+     }
+     STATUS  current
+     DESCRIPTION
+         "An object used for removing alias entries."
+    ::= { ctAliasGroups 8 }
+
+ctAliasConfigurationGroupI OBJECT-GROUP
+     OBJECTS {
+              ctAliasConfigurationNumQueueWraps
+     }
+     STATUS   current
+     DESCRIPTION
+         "An object to indicate queue usage."
+    ::= { ctAliasGroups 9 }
+
+ctAliasConfigurationGroup2 OBJECT-GROUP
+    OBJECTS {
+             ctAliasConfigurationSystemAllocatedEntries,
+             ctAliasConfigurationSystemTotalEntries,
+             ctAliasConfigurationInterfaceTotalEntries,
+             ctAliasConfigurationInterfaceMaxEntries,
+             ctAliasConfigurationInterfaceEnableState,
+             ctAliasConfigurationProtocolEnableState
+    }
+    STATUS   current
+    DESCRIPTION
+        "A collection of objects for configuring port buffer queues."
+    ::= { ctAliasGroups 10 }
+
+ctAliasInterfaceGroup OBJECT-GROUP
+    OBJECTS {
+             ctAliasInterfaceMacAddress,
+             ctAliasInterfaceProtocol,  
+             ctAliasInterfaceAddress,  
+             ctAliasInterfaceVlanID,    
+             ctAliasInterfaceIsActive,  
+             ctAliasInterfaceAddressText, 
+             ctAliasInterfaceTime 
+    }
+    STATUS   current
+    DESCRIPTION
+        "A collection of objects for the discovery and mapping
+         of end systems and aliases."
+    ::= { ctAliasGroups 11 }
+         
+-- -------------------------------------------------------------
+-- compliance statements
+-- -------------------------------------------------------------
+
+ctAliasCompliance MODULE-COMPLIANCE
+    STATUS  current
+    DESCRIPTION
+        "The compliance statement for device support of the
+         Cabletron Directory Alias feature."
+
+    MODULE
+        MANDATORY-GROUPS { ctAliasBasicGroup,
+                           ctAliasStatsGroup,
+                           ctAliasGroup } 
+
+-- an implementation which does not support the ctAliasControlGroup 
+-- will not allow for NMS management controlled garbage collection.
+
+    ::= { ctAliasCompliances 1 }
+
+ctAliasCompliance2 MODULE-COMPLIANCE
+    STATUS  current
+    DESCRIPTION
+        "The compliance statement for device support of the
+         Cabletron Directory Alias feature."
+
+    MODULE
+        MANDATORY-GROUPS { ctAliasBasicGroup,
+                           ctAliasStatsGroup,
+                           ctAliasGroup,
+                           ctAliasMacAddressGroup,
+                           ctAliasProtocolAddressGroup,
+                           ctAliasControlGroupI,
+                           ctAliasGroup,
+                           ctAliasConfigurationGroupI,
+                           ctAliasConfigurationGroup2, 
+                           ctAliasInterfaceGroup
+                         }
+    ::= { ctAliasCompliances 2 }
+
+END