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Foundry NetIron M2404C and M2404F Metro Access Switches
Network Administration Tools (Rev. 03)
802.1ag Connectivity Fault Management (CFM)
© 2008 Foundry Networks, Inc.
Page 100 of 155
default
Specifies that MIPs will always be created.
defer
The decision regarding the MIPs is taken considering the setting of the enclosing
domain. This is the default value.
The following table displays the MIP creation rules.
Table 21: MIP Creation Rules
MEP at Higher
MD Level Exists
MIP at Lower
MD Level Exists
MIP Policy
MEP at Lower
MD Level Exists
MHF(s) Created
True
- - - No
False
True
- - No
False False MIP
policy-none
-
No
False False MIP
policy-
default
the MIP Policy
default always
creates MIPs
Yes
False False MIP
policy-
explicit
True Yes
False False MIP
policy
explicit depends
on the presence
of MEPs at lower
level.
False No
All above
All above
MIP policy-defer
-
No, if the domain
MIP
configuration
does not exist.
The decision
regarding the
MIPs is taken
considering the
setting of the
enclosing
domain.
The table above defines the Level of MIP on a given port and on a given VLAN.
Note that the Levels are set optionally by the administrator and depend on that part of the network
that should be under monitoring or the place of the device in the network.
Therefore the MIPs will appear on ports if there is [are] any Domains and MAs already defined
It is recommended the levels 7, 6 and 5 to be explored by the users. Levels 3 and 4 are distributed
for the Service Providers. Level 1 and 2 serve the Operators. Level 0 is intended to be closer to the
physical Level.
An Intermediate Service Access Point (ISAP) is a SAP, from a Maintenance Domain, through
which frames can pass in transit from DoSAP to DoSAP.