SLED-MIB device MIB details by Cable Television Laboratories Inc

SLED-MIB file content

The SNMP protocol is used to for conveying information and commands between agents and managing entities. SNMP uses the User Datagram Protocol (UDP) as the transport protocol for passing data between managers and agents. The reasons for using UDP for SNMP are, firstly it has low overheads in comparison to TCP, which uses a 3-way hand shake for connection. Secondly, in congested networks, SNMP over TCP is a bad idea because TCP in order to maintain reliability will flood the network with retransmissions.

Management information (MIB) is represented as a collection of managed objects. These objects together form a virtual information base called MIB. An agent may implement many MIBs, but all agents must implement a particular MIB called MIB-II [16]. This standard defines variables for things such as interface statistics (interface speeds, MTU, octets sent, octets received, etc.) as well as various other things pertaining to the system itself (system location, system contact, etc.). The main goal of MIB-II is to provide general TCP/IP management information.

Use ActiveXperts Network Monitor 2024 to import vendor-specific MIB files, inclusing SLED-MIB.

Vendor:	Cable Television Laboratories Inc
Mib:	SLED-MIB  [download]  [view objects]
Tool:	ActiveXperts Network Monitor 2024 [download]    (ships with advanced SNMP/MIB tools)

SLED-MIB DEFINITIONS ::= BEGIN
IMPORTS
    MODULE-IDENTITY,
	Integer32,
	OBJECT-TYPE			FROM SNMPv2-SMI
	TruthValue,
	TimeStamp			FROM SNMPv2-TC
	OBJECT-GROUP,
	MODULE-COMPLIANCE 	FROM SNMPv2-CONF 
    clabProjDocsis      FROM CLAB-DEF-MIB
    InterfaceIndex      FROM IF-MIB
    ;
    
sledMib MODULE-IDENTITY
    LAST-UPDATED    "200312300000Z" -- December 30, 2003
    ORGANIZATION    "eDOCSIS Working Group"
    CONTACT-INFO 
            "John Eng
            Postal: 	Cable Television Laboratories, Inc 
			400 Centennial Parkway
			Louisville, CO 80027
            		U.S.A.
            Phone:  +1 303-661-9100
            Fax:    +1 303-661-9199
            E-mail: mibs@cablelabs.com"
    DESCRIPTION
            "This MIB module provides the management objects necessary
            to configure and invoke the Software Loopback Application 
            for eDOCSIS (SLED) functionality. "
    REVISION        "200312300000Z" -- December 30, 2003 
            DESCRIPTION 
                "Initial version of the ITU-T eDOCSIS SLED MIB module. 

                 Acknowledgement:
                 Greg Nakanishi of Motorola, Inc.
                 " 
           
     ::=  { clabProjDocsis 13 } 
-- Administrative assignments
sledNotifications             OBJECT IDENTIFIER ::= { sledMib 0}
sledMibObjects                OBJECT IDENTIFIER ::= { sledMib 1 }
sledMibNotificationsObjects    OBJECT IDENTIFIER ::= { sledMib 2 }
sledMibConformance             OBJECT IDENTIFIER ::= { sledMib 3 }

-- Object Groups
sledGlobal		OBJECT IDENTIFIER ::= { sledMibObjects 1 }
sledLoopback	OBJECT IDENTIFIER ::= { sledMibObjects 2 }
sledPktGen		OBJECT IDENTIFIER ::= { sledMibObjects 3 }

--
-- The following group describes the objects that apply to
-- both loopback and packet generator SLED functionality
-- 
sledGlobalEnable OBJECT-TYPE
SYNTAX      TruthValue 
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
       "This object allows the SLED functionality to be enabled/disabled.
	  
	  This object may only be updated prior to device registration.  If
	  the device has completed registration, any attempt to update
	  the value of this object returns 'notWritable'.

	  Prior to registration, if the value of this object is set to 
        'true', the SLED functionality is enabled and access to this MIB is 
        allowed.
	  
	  Prior to registration, if the value of this object is set to 
        'false', the SLED functionality is disabled and any attempt to  
        update other objects in this MIB returns 'noAccess'.	  
	  "
	DEFVAL {false}
    ::= { sledGlobal 1 } 

--
-- The following group describes the loopback objects 
--
sledLoopbackInterface OBJECT-TYPE
	SYNTAX		InterfaceIndex
	MAX-ACCESS	read-write
	STATUS		current
	DESCRIPTION
	  "The index of the logical CPE interface (LCI) that the SLED
	   loopback function is attached to.  If the index does not
	   correspond to a LCI supported by this device, 'wrongValue'
	   is returned.
          Any attempt to set this object while sledLoopbackEnable is
          set to 'true' returns 'notWritable'."
	::= { sledLoopback 1 }          
	
sledLoopbackEnable OBJECT-TYPE
	SYNTAX      TruthValue 
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
      "Setting this object to 'true' enables the loopback function. 
       Setting this object to 'false' disables the loopback function.
       When enabled, all Ethernet packets received by the SLED from the
       LCI are processed as follows:
       
       1. If the received Ethernet packet is greater than 1472 octets,
          the Ethernet packet is split into two fragments, the first
          consisting of the first 1472 octets of the Ethernet packet 
          and the second containing the remaining octets, resulting in 
          two payloads that are processed as described below.  If
          the received Ethernet packet is less than or equal to 1472 
          octets, the entire packet will be processed as a single payload.  
       2. For each payload generated in step 1, the payload is appended to 
          the contents of sledLoopbackPktHdr.
       3. The mutable fields within sledLoopbackPktHdr MUST be recomputed. 
          The mutable fields are IP Header Checksum, IP Total Length , UDP 
          Checksum, and UDP  Length.
       4. If the Ethernet packet was fragmented in step 1, the appropriate
          IP header fields (Flags and Fragment Offset) are updated to
          indicate IP fragmentation 
          These IP fragmentation header values will differ depending on
          if this is the first or second fragment being processed.
       5. The Ethernet FCS is computed and appended.
       6. The resulting Ethernet packet is transmitted to the LCI."

	DEFVAL {false}
    ::= { sledLoopback 2 }


sledLoopbackPktHdr OBJECT-TYPE
	SYNTAX      OCTET STRING (SIZE(42)) 
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
     "A properly formatted Ethernet(DIX)+IP+UDP headers for use in
      SLED loopback processing as described in sledLoopbackEnable.
      The object value contains mutable fields that are recomputed:
      the IP Header Checksum, IP Total Length, UDP Length,and 
      UDP Checksum. Any attempt to set this object while 
      sledLoopbackEnable is set to 'true' returns 'notWritable'"
    ::= { sledLoopback 3 }		
--
-- The following group describes the packet generation objects 
--

sledPktGenInterface OBJECT-TYPE
	SYNTAX		InterfaceIndex
	MAX-ACCESS	read-write
	STATUS		current
	DESCRIPTION
	  "The index of the logical CPE interface (LCI) that the SLED
	   packet generation function is attached to.  If the index does
	   not correspond to a LCI supported by the device, 'wrongValue'
	   is returned. Any attempt to set this object while 
          sledPktGenTrigger is set to 'start' returns 'notWritable'"
	::= { sledPktGen 1 }
	
sledPktGenPayload OBJECT-TYPE
	SYNTAX      OCTET STRING (SIZE(64..1518)) 
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
      "The properly formatted Ethernet packet payload to be generated. 
       Any attempt to set this object while sledPktGenTrigger  is set 
       to 'start' returns 'notWritable'"
    ::= { sledPktGen 2 }

sledPktGenRate OBJECT-TYPE
	SYNTAX      Integer32 
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
      "The packet rate (in packets per second) that the SLED is to 
       transmit the packet specified in the sledPktGenPayload. Any 
       attempt to set this object while sledPktGenTrigger is set to 
       'start'  returns 'notWritable'"
	DEFVAL {10}
    ::= { sledPktGen 3 }

sledPktGenNumPkts OBJECT-TYPE
	SYNTAX      Integer32 
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
      "Number of packets to be generated at the rate specified by 
       sledPktGenRate. Any attempt to set this object while 
       sledPktGenTrigger has been set to 'start' will return 
       'notWritable'"
	DEFVAL {1}
    ::= { sledPktGen 4 }

sledPktGenTrigger OBJECT-TYPE
	SYNTAX      INTEGER {
	   start(1),
	   stop(2)
	} 
    MAX-ACCESS  read-write
    STATUS      current
    DESCRIPTION
      "This object controls the packet generation.  Setting this object
      to 'start' causes the packet generation to begin.  Reading this 
      object will return 'start' if a packet generation is in progress,
      otherwise it will return 'stop'.  Setting this object to 'stop'
      while packet generation is in progress aborts the packet
      generation.  Setting this object to 'start' while packet
      generation is in progress, 'wrongValue' is returned."
	DEFVAL {stop}
    ::= { sledPktGen 5 }

sledPktGenLastTrigger OBJECT-TYPE
	SYNTAX      TimeStamp 
    MAX-ACCESS  read-only
    STATUS      current
    DESCRIPTION
      "Value of sysUptime when the  packet generation was
       last triggered."
    ::= { sledPktGen 6 }         
         
-- Conformance information *******************************************

sledMibCompliances  OBJECT IDENTIFIER ::= { sledMibConformance 1 }
sledMibGroups       OBJECT IDENTIFIER ::= { sledMibConformance 2 }

-- Compliance statements

sledMibCompliance MODULE-COMPLIANCE
    STATUS     current
    DESCRIPTION
       "The compliance statement for SLED."
    MODULE
       
-- unconditionally mandatory groups

    MANDATORY-GROUPS {
            sledMibBaseGroup
    }

::= { sledMibCompliances 1 }


sledMibBaseGroup OBJECT-GROUP
    OBJECTS {
		sledGlobalEnable,
		sledLoopbackInterface,
		sledLoopbackEnable,
		sledLoopbackPktHdr,
		sledPktGenInterface,
        	sledPktGenPayload,
		sledPktGenRate,
		sledPktGenNumPkts, 
		sledPktGenTrigger,  
		sledPktGenLastTrigger		 
    }
    STATUS    current
    DESCRIPTION
    	"Group of object in SLED MIB"
    ::= { sledMibGroups 1 } 

END