IEEE Std. 802.1ag-2007 Topic: Linktrace Message reception, forwarding and replying SUBSECTION: 20.3.2 If an Up MEP, as shown in Figure 20-13, case 8, transmits a Linktrace, the Linktrace Responder should see it, decrement the TTL field, respond (to the MEP) and forward the LTM out the appropriate port, as shown in that diagram. However, according to point f) of 20.3.2 on page 144, the LTM would not be forwarded; it must have been received by an MHF in order to be forwarded. The case of an LTM generated by an internal Up MEP seems to have not been taken into account when writing point f). Clearly, an LTM generated by an Up MEP should be forwarded. Point f) now reads: f) The LTM was received by an MHF, not a MEP;
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