80 | 802.1ag
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• MIP Database (MIP-DB): Every MIP must maintain a database of all other MEPs in the MA that
have announced their presence via CCM
MP Database Persistence
Continuity Check Messages
Continuity Check Messages (CCM) are periodic hellos used to:
• discover MEPs and MIPs within a maintenance domain
• detect loss of connectivity between MEPs
• detect misconfiguration, such as VLAN ID mismatch between MEPs
• to detect unauthorized MEPs in a maintenance domain
Continuity Check Messages (CCM) are multicast Ethernet frames sent at regular intervals from each MEP.
They have a destination address based on the MD level (01:80:C2:00:00:3X where X is the MD level of
the transmitting MEP from 0 to 7). All MEPs must listen to these multicast MAC addresses and process
these messages. MIPs may optionally processes the CCM messages originated by MEPs and construct a
MIP CCM database.
Task Command Syntax Command Mode
Display the MEP Database.
show ethernet cfm maintenance-points remote detail [active |
domain {level | name} | expired | waiting]
EXEC Privilege
FTOS#show ethernet cfm maintenance-points remote detail
MAC Address: 00:01:e8:58:68:78
Domain Name: cfm0
MA Name: test0
Level: 7
VLAN: 10
MP ID: 900
Sender Chassis ID: Force10
MEP Interface status: Up
MEP Port status: Forwarding
Receive RDI: FALSE
MP Status: Active
Display the MIP Database.
show ethernet cfm mipdb
EXEC Privilege
Task Command Syntax Command Mode
Set the amount of time that data
from a missing MEP is kept in
the Continuity Check Database.
database hold-time minutes
Default: 100 minutes
Range: 100-65535 minutes
ECFM DOMAIN
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