https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/fec-edit-interfaces-optics-options-qfx-series.html
The default value is gfec. ( in 19.4R1 )
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| ????? to be checked | https://www.juniper.net/documentation/en_US/junos/topics/reference/configuration-statement/fec-edit-interfaces-optics-options-qfx-series.html
edit interfaces interface-name optics-options fec (efec | gfec | gfec-sdfec |hgfec | sd-fec | ufec | none); |
| Ethernet FEC Mode : FEC91 |
{master:0}
lab@MRFB_JL_047> show interfaces terse
Interface Admin Link Proto Local Remote
. . .
et-0/0/48 up down
et-0/0/48.0 up down inet 10.1.34.185/31
et-0/0/49 up down
et-0/0/49.0 up down inet 10.1.34.187/31
bme0 up up
bme0.0 up up inet 128.0.0.1/2
128.0.0.4/2
128.0.0.63/2
cbp0 up up
dsc up up
{master:0}
lab@MRFB_JL_047> show interfaces et-0/0/48
Physical interface: et-0/0/48, Enabled, Physical link is Down
Interface index: 664, SNMP ifIndex: 530
Description: SPINE - MRFB_JS_001 - et-1/0/15
Link-level type: Ethernet, MTU: 9216, LAN-PHY mode, Speed: 100Gbps,
BPDU Error: None, Loop Detect PDU Error: None, Ethernet-Switching Error: None,
MAC-REWRITE Error: None, Loopback: Disabled, Source filtering: Disabled,
Flow control: Disabled, Media type: Fiber
Device flags : Present Running Down
Interface flags: Hardware-Down SNMP-Traps Internal: 0x4000
Link flags : None
CoS queues : 12 supported, 12 maximum usable queues
Current address: 3c:8c:93:51:13:35, Hardware address: 3c:8c:93:51:13:35
Last flapped : 2020-01-22 16:59:10 UTC (00:27:53 ago)
Input rate : 0 bps (0 pps)
Output rate : 0 bps (0 pps)
Active alarms : LINK
Active defects : LINK, LOCAL-FAULT
Pre-emphasis(reg 236/237)
Register-value 0
Ctle(reg 234/235)
Register-value 0
Differential-amplitude(reg 238/239)
Register-value 0
PCS statistics Seconds
Bit errors 0
Errored blocks 0
Ethernet FEC Mode : FEC91
Ethernet FEC statistics Errors
FEC Corrected Errors 0
FEC Uncorrected Errors 0
FEC Corrected Errors Rate 0
FEC Uncorrected Errors Rate 0
PRBS Statistics : Disabled
Interface transmit statistics: Disabled
Logical interface et-0/0/48.0 (Index 571) (SNMP ifIndex 532)
Flags: Device-Down SNMP-Traps 0x4004000 Encapsulation: ENET2
Input packets : 0
Output packets: 0
Protocol inet, MTU: 9202
Max nh cache: 75000, New hold nh limit: 75000, Curr nh cnt: 0,
Curr new hold cnt: 0, NH drop cnt: 0
Flags: Sendbcast-pkt-to-re
Addresses, Flags: Dest-route-down Is-Preferred Is-Primary
Destination: 10.1.34.184/31, Local: 10.1.34.185
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