CANOGA PERKINS 9145E NID Software Version 3.1 - Manual (Page 139)

9145E NID Software User’s Manual Service OAM
Service OAM
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If All-to-One Bundling for SOAM is enabled, and the Network port is S-Tagged, then:
• Frames from untagged DOWN MEPs on the user or network port are sent untagged,
using the user or network port MAC address as the source MAC address.
• Frames from C-Tagged DOWN MEPs on the user port are sent C-Tagged, using the user
port MAC address as the source MAC address.
• Frames from C-Tagged DOWN MEPs on the network port are sent as double tagged, on
the network port, using the network port MAC address as the source MAC address.
• Frames from UP MEPs on the user port are sent on the network port as double tagged
frames, using the user port MAC address as the source MAC address.
• Frames from the UP MEPs on the network port are sent on the user port as single tagged
C-tagged frames, using the network port MAC address as the source MAC address.
• A single UP S-Tagged MEP can be configured on the user port, which sends S-Tagged
frames on the network port, using the user port MAC address as the source MAC
address.
If SOAM All-to-One Bundling is disabled, then all SOAM frames are sent and received either
untagged or C-Tagged, based on the SOAM configuration. In this case, the S-Tagged MEP (g in
Figure 11-2) cannot be configured. Figure 11-2 illustrates the logical positioning of MEPs and
MIPs when SOAM All-to-One Bundling is enabled.
Figure 11-2 Logical positioning of MEPs and MIPs with SOAM S-VLAN enabled
User Port
Network Port
S-Component
C-Component
Untagged MEP
(a) (b)
Down C-tagged
MEP User port (c)
UP C-tagged MEP
User port (e)
UP S-tagged MEP (g)
C-tagged MIP on
user port (h)
C-tagged MIP on
network port (i)
Down C-tagged MEP
Network port (d)
UP C-tagged MEP
Network port (f)