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Name
Level
TLV option select
The contents of this pamameter depends on the value of the format member.
If format is None: Name is not used, but will be set to all-zeros behind the
scenes. This format is typically used by Y.1731-kind-of-PDUs.
If format is String: Name must contain a string from 1 to 43 characters long.
MD/MEG level of this domain. Valid values are restricted to 0 - 7.
About leak prevention
Leak prevention is about discarding OAM PDUs with MEG levels lower than the
MEP they hit when the OAM PDUs are ingressing the port on which the MEP
resides, and to discard OAM PDUs with MEG levels at or lower than the MEP's
when the OAM PDUs are ingressing other ports.
There are two categories of architectures, when it comes to leak-prevention:
Those that use Shared MEG level and those that use Independent MEG level:
Shared MEG level
On Shared MEG level architectures, Port Down MEPs always perform level
filtering no matter which VLAN ID (VID) OAM PDUs get classified to, unless the
same port has a VLAN MEP on the VID in question. So if you have a Port MEP
in VID X and a VLAN MEP in VID Y, an OAM frame arriving on the port and gets
classified to VID X or VID Z will be handled/level-filtered by the Port MEP,
whereas an OAM frame ingressing the port in VID Y will be handled by the
VLAN MEP. Likewise, if the switch has a Port MEP on VID X on Port X and an
OAM frame ingresses on VID Y on Port Y, it is subject to level filtering before
egressing Port X, unless Port X also has a VLAN MEP on VID Y, in which case
the VLAN MEP will take care of level-filtering the OAM PDU.
On Shared MEG level architectures, all Port MEPs must have the same MEG
level and any VLAN MEP must have a MEG level higher than the Port MEPs'
MEG level.
Independent MEG level
On Independent MEG level architectures, Port Down MEPs never perform level
filtering on frames not classified to the MEP's VID. So if you have a Port MEP on
VID X and a VLAN MEP on VID Y and an OAM frame ingresses any port on VID
Z, it is not subject to handling/level-filtering by any of the two MEPs.
This switch exhibits Independent MEG level.
Sender Id: Default Sender ID TLV format to be used in CCMs
generated by this Domain (may be overridden in service)
None Do not include Sender ID TLVs.
Chassis Enable Sender ID TLV and send Chassis ID (MAC Address).
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User's Manual of WGS-5225-8P2S Series
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