Brocade 6910 Ethernet Access Switch Configuration Guide (Supporting R2.2.0.0) - Manual (Page 593)

Brocade 6910 Ethernet Access Switch Configuration Guide 537
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CFM Commands
Continuity Check Operations
ethernet cfm cc ma interval
This command sets the transmission delay between continuity check messages (CCMs). Use the no
form to restore the default settings.
Syntax
ethernet cfm cc md domain-name ma ma-name interval interval-level
no ethernet cfm cc ma ma-name interval
domain-name – Domain name. (Range: 1-43 alphanumeric characters)
ma-name – Maintenance association name. (Range: 1-43 alphanumeric characters,
maximum length is 44 minus the length of the domain name)
interval-level – The transmission delay between connectivity check messages. The setting
for this parameter is expressed as levels 4 through 7, which in turn map to specific
intervals of time. (CCM interval field options: 4 - 1 sec, 5 - 10 sec, 6 - 1 min, 7 - 10 min)
Default Setting
4 (1 sec)
Command Mode
Global Configuration
Command Usage
• CCMs provide a means to discover other MEPs and to detect connectivity failures in an MA. If
any MEP fails to receive three consecutive CCMs from any other MEPs in its MA, a connectivity
failure is registered. The interval at which CCMs are issued should therefore be configured to
detect connectivity problems in a timely manner, as dictated by the nature and size of the MA.
• The maintenance of a MIP CCM database by a MIP presents some difficulty for bridges carrying
a large number of Service Instances, and for whose MEPs are issuing CCMs at a high
frequency. For this reason, slower CCM transmission rates may have to be used.
Interface State Interface states include:
No Status – Either no CCM has been received, or no interface status TLV was received
in the last CCM.
Up – The interface is ready to pass packets.
Down – The interface cannot pass packets.
Testing – The interface is in some test mode.
Unknown – The interface status cannot be determined for some reason.
Dormant – The interface is not in a state to pass packets but is in a pending state,
waiting for some external event.
Not Present – Some component of the interface is missing.
isLowerLayerDown – The interface is down due to state of the lower layer interfaces.
Crosscheck Status Shows if crosscheck function has been enabled.
TABLE 127 show ethernet cfm maintenance-points remote detail - display (Continued)
Field Description