Users Guide

Version Description
9.12(0.0) Enabled on 25G and 50G interfaces on the Z9100–ON by default. Introduced
support to enable or disable FEC independent of autonegotiation for 100G
interfaces on the S6100–ON and Z9100–ON.
9.10(0.0) Introduced on the S6100–ON.
9.8(1.0) Introduced on the Z9100–ON.
9.8(0.0P5) Introduced on the S4048-ON.
9.8(0.0P2) Introduced on the S3048-ON.
9.7(0.0) Introduced on the S6000-ON.
9.2(1.0) Introduced on the Z9500.
9.0.2.0 Introduced on the S6000.
8.3.19.0 Introduced on the S4820T.
8.3.11.1 Introduced on the Z9000.
8.3.7.0 Introduced on the S4810.
Usage
Information
This command is not applicable for 10–Gigabit and 40–Gigabit Ethernet interfaces.
You can enable or disable FEC and auto negotiation irrespective of each other on 100G interfaces.
For 100G interfaces, CR4 auto-negotiation is enabled based on the media type. Autonegotiation is enabled
on DAC cables by default.
Example
DellEMC#show interfaces hu 1/49
hundredGigE 1/49 is up, line protocol is up
Hardware is DellEMCEth, address is 34:17:eb:2c:8b:82
Current address is 34:17:eb:2c:8b:82
Non-qualified pluggable media present, QSFP28 type is 100GBASE-CR4-3M
AutoNegotiation is OFF
Forward Error Correction(FEC) configured is cl91
FEC status is cl91
DellEMC(conf-if-tf-1/3)#do show int tw 1/3
twentyFiveGigE 1/3 is up, line protocol is up
Hardware is DellEMCEth, address is 34:17:eb:37:0c:02
Current address is 34:17:eb:37:0c:02
Pluggable media present, SFP28 type is 25GBASE-CR1-1M
AutoNegotiation is ON
Forward Error Correction(FEC) configured is cl74
FEC status is cl74
DellEMC(conf-if-tf-1/3)#do show int tw 1/3
twentyFiveGigE 1/3 is up, line protocol is up
Hardware is DellEMCEth, address is 34:17:eb:37:0c:02
Current address is 34:17:eb:37:0c:02
Pluggable media present, SFP28 type is 25GBASE-CR1-1M
AutoNegotiation is ON
Forward Error Correction(FEC) configured is cl108
FEC status is cl108
DellEMC(conf-if-fi-1/51/1)#do show int fi 1/51/1
fiftyGigE 1/51/1 is up, line protocol is up
Hardware is DellEMCEth, address is 34:17:eb:37:0c:02
Current address is 34:17:eb:37:0c:02
Pluggable media present, QSFP28 type is 2x50GBASE-CR2-1M
AutoNegotiation is ON
Forward Error Correction(FEC) configured is cl74
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Interfaces