Transition Networks
S4224 Web User Guide
33558 Rev. C
Page 226 of 669
Link Trace State
Transaction ID
The transaction ID is incremented for each LTM send. This value is inserted the transmitted LTM PDU
and is expected to be received in the LTR PDU. Received LTR with wrong transaction id is ignored.
There are five transactions in one Link Trace activated.
Time To Live
This is the TTL value taken from the LTM received by the MIP/MEP sending this LTR - decremented as if
forwarded. The valid LT TTL range is 0-255.
Mode
Indicates if it was a MEP/MIP sending this LTR.
Direction
Indicates if MEP/MIP sending this LTR is ingress/egress.
Forwarded
Indicating if MEP/MIP sending this LTR has forwarded the LTM.
Relay
The Relay action can be one of the following:
MAC:
The was a hit on the LT Target MAC
FDB:
LTM is forwarded based on a hit in the Filtering Database.
MFDB:
LTM is forwarded based on hit in the MIP CCM Database.
Last MAC
The MAC identifying the last sender of the LBM causing this LTR - initiating MEP or previous MIP
forwarding.
Next Mac
The MAC identifying the next sender of the LBM causing this LTR - MIP forwarding or terminating MEP.