Brocade Multi-Service IronWare Administration Guide (Supporting R05.6.00) - Manual (Page 197)

Multi-Service IronWare Administration Guide 179
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CFM monitoring and show commands
6
Tagged ports are configured under a VLAN ID.
3. To specify a tagged endpoint for a VLL instance, enter the following commands.
PE1(config-mpls-vll-test1)vlan 30
PE1(config-mpls-vll-vlan)tagged ethe 1/1
As in the previous case, to monitor the connectivity between CE1 and CE2, you can use “show cfm
connectivity” commands as mentioned in the previous scenario. Also we could use either loopback
or linktrace on CE1 or CE2.
LAG-support for IEEE 802.1ag-over-vll
FIGURE 12 - IEEE 802.1ag over VLL scenerio
As shown in Figure 12 , you can have MEP configuration over a LAG port. On CE1 and CE2 DOWN
MEP is configured on VLAN and on PE1 and PE2 DOWN or UP MEP would be configured, depending
on what to monitor.
The configuration and monitoring of MEPs is similar as mentioned in the previous examples.
Deletion of VLL
NOTE
Deletion of VLL would cause the deletion of Maintenance Association and corresponding MEPs on
that MA.
Sub-second timer support
The ccm-interval command sets the time interval between two successive Continuity Check
messages (CCMs) that are sent by MEPs in the specified Maintenance Domain. The default value is
10 seconds. There is support for sub-second timers 3.3 ms, 10 ms and 100 ms. As in the case of
VLAN and VPLS, for sub-second timers pbif hardware assist is used to transmit and process the
CCM packets.
NOTE
The sub-second timer functionality is not supported on VLL-Local.
The sub-second timer functionality is not supported on NetIron CES devices