I'm having an issue with REP (resilient ethernet protocol). I have it working in several places on the same model switch, IE4000 on 15.2.7E code. The ring won't form and from running debugs, prsm and error it shows no neighbor. Even when REP fails I can see the adjacent switch via CDP. Following is from the log:
Oct 20 18:44:57.310 UTC: %LINK-3-UPDOWN: Interface GigabitEthernet1/13, changed state to up
Oct 20 18:44:59.313 UTC: %LINEPROTO-5-UPDOWN: Line protocol on Interface GigabitEthernet1/13, changed state to up
Oct 20 18:45:03.316 UTC: rep_pr Gi1/13 - pr: during state FAILED_PORT, got event 5(no_ext_neighbor)
Oct 20 18:45:03.316 UTC: @@@ rep_pr Gi1/13 - pr: FAILED_PORT -> FAILED_PORT_NO_EXT_NEIGHBOR[Gi1/13]rep_pr_act_no_ext_neighbor@434: PRSM->fp_no_ext_neighbor state
[Gi1/13]rep_pr_lsl_event_handler@668: REP_MSG_EXT_PEER_GONE rcvd
Oct 20 18:45:03.736 UTC: rep_pr Gi1/13 - pr: during state FAILED_PORT_NO_EXT_NEIGHBOR, got event 1(link_not_op)
Oct 20 18:45:03.736 UTC: @@@ rep_pr Gi1/13 - pr: FAILED_PORT_NO_EXT_NEIGHBOR -> FAILED_PORT[Gi1/13]rep_pr_act_fp@101: PRSM->failed state, 0xC0
[Gi1/13]rep_pr_no_ext_nbr_to_fp_action@457: PRSM->no_ext_nbr_to_fp state
[Gi1/13]rep_pr_lsl_event_handler@654: REP_MSG_LINKOP_FALSE rcvd
