Summary:
Upon inserting a SFP into port 0/0 of MIC-3D-20GE-SFP, the following is printed:
fpc1 MIC(1/0)(1): SFP plugged in
This can be confusing, as the interface name is ge-1/0/0, not ge-1/0/1.
Symptoms:
Consider this hardware:
FPC 1 REV 21 750-031088 ZX7000 MPC Type 2 3D Q
MIC 0 REV 16 750-049846 CAGV8000 3D 20x 1GE(LAN)-E,SFP
PIC 0 BUILTIN BUILTIN 10x 1GE(LAN) -E SFP
Xcvr 0 REV 01 740-013111 8177000 SFP-T
Xcvr 4 REV 01 740-038291 PTA1AAA SFP-T
PIC 1 BUILTIN BUILTIN 10x 1GE(LAN) -E SFP
Xcvr 8 REV 02 740-011613 AM0926SAAAA SFP-SX
Which creates these interfaces:
ge-1/0/0
ge-1/0/4
ge-1/1/8
When inserting a SFP, messages are printed:
fpc1 MIC(1/0)(1): SFP plugged in
fpc1 MIC(1/0)(2): SFP plugged in
fpc1 MIC(1/1)(3): SFP plugged in
Cause:
This comes from the FPC's view of the SFP index, which does not have a 0 index to begin, so port 1 is index 2:
NPC1(lab-MX480-RE0 vty)# show sfp list
...
Index Name Presence ID Eprom PNO SNO calibr Toxic
----- -------------- ---------- -------- ---------- ----------- ------- -------
1 MIC(1/0)(0) Present Complete 740-013111 8177047 Unknown
2 MIC(1/0)(4) Present Complete 740-038291 PTA1CBE Unknown
3 MIC(1/1)(8) Present Complete 740-011613 AM0926SBX2V int Unknown
If SFP's are not installed in order, the indexes may be out of order as well, so it is necessary to check this command when reading the FPC syslog.
Solution:
Take note of log entries which start with "fpc1" or similar, as these lines come directly from the 'pfe notice' syslog configuration. As such, some knowledge of how the FPC indexes the SFP's is needed. It may also be helpful to check these commands:
show chassis pic
show chassis hardware
Other platforms do not have this problem, like MX204.