4.4.3 CFM Services Configuration

Configure CFM Service parameters on the CFM Service Configuration page, as shown in the following figure.

Figure 4-20. CFM Service Configuration

The CFM Service Configuration page has the following parameters:

  • Delete: Check to delete the entry. It is deleted during the next save.
  • Domain: Name of Domain under which this Service resides.
  • Service: Name of Service. Value is a single word which begins with an alphabetic letter A–Z or a–z with length 1–15.
  • Format: Select the short Service name format. This decides how the value of the Name parameter is interpreted. To mimic Y.1731 MEG IDs, create an MD instance with an empty name and use Y1731 ICC or Y1731 ICC CC.

    The following are the possible values (look under Name parameter for explanation):

    • String
    • Two Octets
    • Y1731 ICC
    • Y1731 ICC CC
  • Name: The contents of this parameter depend on the value of the format member. Besides the limitations explained for each of them, the following applies in general:

    • If the Domain Format is None, the size of this cannot exceed 45 bytes. If the Domain format is not None, the size of this cannot exceed 44 bytes.

  • If format is String, then the following applies:
    • Length must be in range [1–44]
    • Contents must be in range [32–126]
  • If format is Two Octets, then the following applies:
    • Name [0] and Name [1] are interpreted as unsigned 8-bit integers (allowing a range of [0; 255]). Name [0] is placed in the PDU before Name [1].
    • The remaining available bytes in name are not used
  • If format is Y1731 ICC, then the following applies:
    • Length must be 13. Contents must be in range [a–z, A–Z, and 0–9].
    • Y.1731 specifies that it is a concatenation of ICC (ITU Carrier Code) and UMC (Unique MEG ID code):
      • ICC: 1–6 bytes
      • UMC: 7–12 bytes

      In principle, UMC can be any value in range [1; 127], but API does not allow this for specifying length of ICC. Therefore, the underlying code does not know where ICC ends and UMC starts. The Domain Format must be None.

  • If format is Y1731 ICC CC, then the following applies:
    • Length must be 15.
    • First 2 chars (CC): Must be amongst [A–Z]
    • Next 1–6 chars (ICC): Must be amongst [a–z, A–Z, 0–9]
    • Next 7–12 chars (UMC): Must be amongst [a–z, A–Z, 0–9]
    • There may be ONE (slash) present in name [3–7]
    • The Domain format must be None
  • VLAN: The MA's primary VID. A primary VID of 0 means that all MEPs created within this MA are created as port MEPs (interface MEPs). There can only be one port MEP per interface. A given port MEP may still be created with tags if that MEP's VLAN is non-zero. A non-zero primary VID means that all MEPs created within this MA are created as VLAN MEPs. A given MEP may be configured with another VLAN than the MA's primary VID, but it is impossible to have untagged VLAN MEPs.
  • CCM Interval: The CCM rate of all MEPs bound to this Service.
  • TLV Option Select:
    • Sender ID: Default Sender ID TLV format to be used in CCMs generated by this service.
      • None: Do not include Sender ID TLVs
      • Chassis: Enables Sender ID TLV and send Chassis ID (MAC Address)
      • Manage: Enables Sender ID TLV and send Management address (IPv4 Address)
      • ChassisManage: Enables Sender ID TLV and send both Chassis ID (MAC Address) and Management Address (IPv4 Address)
      • Defer: Lets the Domain configuration decide if Sender ID TLVs are included
    • Port Status: Include or exclude Port Status TLV in CCMs generated by this Service or let higher level determine
      • Disable: Does not include Port Status TLVs
      • Enable: Includes Port Status TLVs
      • Defer: Let the Domain configuration decide if Port Status TLVs are included
    • Interface Status: Include or exclude Interface Status TLV in CCMs generated by this Service or let higher level determine
      • Disable: Does not include Interface Status TLVs
      • Enable: Includes Interface Status TLVs
      • Defer: Lets the Domain configuration decide if Interface Status TLVs shall be included
    • Org. Specific: Excludes Organization-Specific TLV in CCMs generated by this service or let higher level determine
      • Disable: Does not include Organization-Specific TLVs
      • Defer: Lets the Domain configuration decide if Organization-Specific TLVs are included