Health monitoring of the PXC sub-ports is based on EFM OAM where the Information OAMPDUs are transmitted by each peer (pxc sub-port) at the configured intervals. Their purpose is to perform keepalive and critical notification functions.
For PXCs with underlying faceplate ports, status monitoring can be enabled for either or both of the faceplate ports.
crc-monitoring (link quality) on the RX side of the port (config>port>ethernet>crc-monitor)
crc-monitoring (link quality) on the path from IOM toward MDA (config>port>ethernet>down-on-internal-error)
The tx-disable flag (disable remote laser on error) is not supported on PXC ports because PXC ports are looped.
CRC monitoring on the RX side of the faceplate ports has the following characteristics:
monitor ingress error conditions
compare error counts against configurable thresholds
CRC errors are only recorded if frames are transmitted
crossing the signal degrade (SD) threshold raises log event
crossing the signal failure (SF) threshold takes down the port’s operational state
error rate thresholds uses format m·10-n; both the threshold (n) and multiplier (m) are configurable
Health monitoring on the faceplate ports level is disabled by default.
In addition to the explicitly configured aforementioned health monitoring mechanisms, PXC operational state transitions are by default reported by a port UP/DOWN trap:
478 2015/10/22 14:08:15.86 UTC WARNING: SNMP #2004 Base pxc-1.b Interface pxc-1.b is not operational
478 2015/10/22 14:08:15.86 UTC WARNING: SNMP #2004 Base pxc-1.b Interface pxc-1.b is operational