Edge-Core ECS4810-12M Layer 2, Management Manual

Page: 454 / 1236

C
HAPTER
15
| Basic Administration Protocols
Connectivity Fault Management
– 454 –
Continuity Check Errors
◆
Connectivity Check Config – Sends a trap if this device receives a
continuity check message (CCM) with the same maintenance end point
identifier (MPID) as its own but with a different source MAC address,
indicating that a CFM configuration error exists.
◆
Connectivity Check Loop – Sends a trap if this device receives a CCM
with the same source MAC address and MPID as its own, indicating that
a forwarding loop exists.
◆
Connectivity Check MEP Down – Sends a trap if this device loses
connectivity with a remote maintenance end point (MEP), or
connectivity has been restored to a remote MEP which has recovered
from an error condition.
◆ Connectivity Check MEP Up – Sends a trap if a remote MEP is
discovered and added to the local database, the port state of a
previously discovered remote MEP changes, or a CCM is received from a
remote MEP which as an expired entry in the archived database.
MEP Up traps are suppressed when cross-checking of MEPs is enabled
7
because cross-check traps include more detailed status information.
Cross-check Errors
◆
Cross Check MA Up – Sends a trap when all remote MEPs in an MA
come up.
An MA Up trap is sent if cross-checking is enabled
7
, and a CCM is
received from all remote MEPs configured in the static list for this
maintenance association
8 .
◆
Cross Check MEP Missing – Sends a trap if the cross-check timer
expires and no CCMs have been received from a remote MEP configured
in the static list.
A MEP Missing trap is sent if cross-checking is enabled
7
, and no CCM is
received for a remote MEP configured in the static list
8
.
◆
Cross Check MEP Unknown – Sends a trap if an unconfigured MEP
comes up.
A MEP Unknown trap is sent if cross-checking is enabled
7
, and a CCM is
received from a remote MEP that is not configured in the static list
8
.
7. Cross-checking must be enabled for this type of trap to be reported (see
"Configuring
CFM Maintenance Associations"
).
8. See
"Configuring Maintenance End Points"
.