This MIB module consists of two parts.

1) Auto-Ethernet-CFM Control:
  |-- ipslaEthernetGrpCtrlTable
  |-- ipslaEthernetGrpReactTable

2) ethernetJitter Stats:
  |-- ipslaEtherJitterLatestStatsTable
  |-- ipslaEtherJitterAggStatsTable

The first part defines a mechanism to manage IP SLA 
Auto-Ethernet-CFM operation.  

IP SLA is a capability which utilizes active monitoring for 
network perfomance.  It can be used for network 
troubleshooting, network assessment and health monitoring.

IEEE 802.1ag defines Connection Fault Management (CFM) for 
Ethernet layer.  CFM can be used to detect, isolate and report
the connectivity faults, and allows discovery and verification 
of the path through briges and LANs.  

Auto-Ethernet-CFM operation integrates the capabilities of 
IP SLA and IEEE 802.1ag.  It's capable of discovering all the
existing MEPs in a specified VLAN or Ethernet Virtual Connection
within a specified maintenance domain.  After which, it creates, 
configures, and schedules an IP SLA operation for each MEP 
automatically.

IP SLA currently supports two types of operations for 
end-to-end Ethernet connectivity - 'ethernetPing' and 
'ethernetJitter'.

'ethernetPing' can be used to monitor the connectivity and
measure RTT by sending the regular 802.1ag loopback frame
to a particular MEP.

'ethernetJitter' can be used to measure metrics such as 
RTT, Jitter, frame loss, one-way latency by sending multiple 
enhanced CFM frames at specified interval to a particular MEP.

Without Auto-Ethernet-CFM operation, the two types of operations
can also be created, configured, and scheduled manually through 
CISCO-RTTMON-MIB by specifing the target MEP's identifier 
in addition to the VLAN or Ethernet Virtual Connection and 
Maintenance Domain.

With Auto-Ethernet-CFM operation, the two types of operations
will be created automatically.  The Auto-Ethernet-CFM will pass
all the values specified in this module to the corresponding 
objects in CISCO-RTTMON-MIB for each MEP discovered.

   CISCO-IPSLA-ETHERNET-MIB         CISCO-RTTMON-MIB

  ipslaEthernetGrpCtrlTable     -> rttMonCtrlAdminTable
                               |
                                -> rttMonEchoAdminTable 

  ipslaEthernetGrpReactTable    -> rttMonReactTable

The second part defines a collection of statistics resulting 
from 'ethernetJitter' operation created either manually or 
automatically.


Glossary:
  CFM - Connection Fault Management 
  DSAP - Domain Service Access Point: A member of a set of 
      SAPs at which a Maintenance Domain is capable of 
      offering connectivity to systems outside the Maintenance 
      Domain.
  IP SLA - Cisco IOS IP Service Level Agreements
  IP SLA operation - Refers to the 'ethernetPing' or 
      'ethernetJitter' operation supported by IP SLA.  
  MEP - Maintenance association End Point: An actively managed 
      CFM entity, associated with a specific DSAP of a 
      service instance, which can generate and receive CFM 
      PDUs and track any responses.  
  maintenance domain - The network or the part of the network 
      for which faults in connectivity are to be managed.  
      The boundary of a Maintenance Domain is defined by a set 
      of DSAPs, each of which can become a point of connectivity
      to a service instance.
  Maintenance Domain Name - The identifier, unique over the 
      domain for which CFM is to protect against accidental 
      concatenation of service instances, of a particular 
      Maintenance Domain.
  RTT - Round Trip Time
  SAP - Service Access Point at which a service is offered.
  service instance - A service instance is a set of SAPs, 
      selected from among the DSAPs defining a Maintenance 
      Domain, such that a Data.Request primitive presented 
      to one SAP can result in a Data.Indication primitive 
      occurring at one or more of the other SAPs in the set.  
      It corresponds to a VLAN or an Ethernet Virtual Connection.
  TLV - Stands for Type, Length, Value, and denotes a method of
      encoding variable-length and/or optional information in a
      PDU.  TLVs are not aligned to any particular word or octet
      boundary.  TLVs follow each other with no padding between 
      TLVs.
  VLAN - Virtual Local Area Network: A subset of the active 
      topology of a Bridged Local Area Network.  Associated 
      with each VLAN is a VLAN Identifier.

REFERENCE:
    IEEE 802.1ag Draft 6.0 'Virtual Briged Local Area Networks 
     - Amendments 5: Connectivity Fault Management' July 2006