Chapter 13
| Basic Administration Protocols
Connectivity Fault Management
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◆ MA Name Format – Specifies the name format for the maintenance
association as IEEE 802.1ag character based, or ITU-T SG13/SG15 Y.1731 defined
ICC-based format.
â–
Character String – IEEE 802.1ag defined character string format. This is an
IETF RFC 2579 DisplayString.
â–
ICC Based – ITU-T SG13/SG15 Y.1731 defined ICC based format.
◆ Interval Level – The delay between sending CCMs. The setting for this
parameter is expressed as levels 4 through 7, which in turn map to specific
intervals of time. (Options: 4 - 1 second, 5 - 10 seconds, 6 - 1 minute, 7 - 10
minutes)
◆ Connectivity Check – Enables transmission of CCMs. (Default: Disabled)
◆ Cross Check – Enables cross-checking between a static list of MEPs assigned to
other devices within the same maintenance association and the MEPs learned
through CCMs.
Before starting the cross-check process, first configure the remote MEPs that
exist on other devices inside the maintenance association using the Remote
MEP List (see "Configuring Remote Maintenance End Points"). These remote
MEPs are used in the cross-check operation to verify that all endpoints in the
specified MA are operational.
The cross-check start delay, which sets the maximum delay this device waits for
a remote MEP to come up before starting the cross-check operation, is a
domain-level parameter. To set this parameter, use the CFM MD Configuration
screen (see "Configuring CFM Maintenance Domains").
◆ AIS Status – Enables/disables suppression of the Alarm Indication Signal (AIS).
(Default: Disabled)
◆ AIS Period – Configures the period at which AIS is sent in an MA. (Range: 1 or
60 seconds; Default: 1 second)
◆ AIS Transmit Level – Configure the AIS maintenance level in an MA.
(Range: 0-7; Default is 0)
AIS Level must follow this rule: AIS Level >= Domain Level
◆ AIS Suppress Alarm – Enables/disables suppression of the AIS.
(Default: Disabled)
Web Interface
To create a maintenance association:
1. Click Administration, CFM.
2. Select Configure MA from the Step list.
3. Select Add from the Action list.
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