Brocade Multi-Service IronWare Switching Configuration Guide (Supporting R05.6.00) - Manual (Page 331)

Multi-Service IronWare Switching Configuration Guide 301
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802.1ag over PBB OAM
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B-VLAN MAs ( Figure 53 )
• B-VLAN MAs manage the B-VLANs within a single PBBN.
• The scope of these 802.1ag frames is the PBB network only. These frames do not leave the
PBB network.
• These CFM frames are only visible within the PBBN where the B-TAG is being processed.
I-SID MAs ( Figure 53 )
• Backbone service instance CFM frames are only visible within the PBBN where the I-TAG is
being processed.
PBB LAN Link Segment MAs ( Figure 53 )
• PBB LAN link MAs optionally manage links within a PBBN.
FIGURE 53 PBB MA Frames
Types of MEPs and MIPs
Associated with the MAs described in the previous section, there are MEPs and MIPs. Support is
provided for the following types of MIPs and MEPs on the appropriate interfaces:
• MIPs and up/down MEPs for C-VIDs: Where C-Tags are processed
• MIPs and up/down MEPs for S-VIDs: Where S-Tags are processed
• Up/down MEPs for I-SIDs: Where I-Tags are processed
• MIPs and up/down MEPs for B-VIDs: Where B-Tags are processed
• Down MEPs for Link MAs
Hierarchical Fault Detection Operation
Ethernet OAM uses a hierarchical fault detection scheme.
• Customer scope: Uses C-VLAN MA and Link MA
• PB scope: Uses S-VLAN MA and Link MA
• PBB scope: Uses B-VLAN MA, I-SID MA, and Link MA