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When the 100G PSM4-IR is in the 4x25G fanout or breakout mode, inserted into an SFP28 LR, manually turn on FEC on the
LR side for the link to come up. This is because PSM4-IR requires FEC and only supports SMF link distance up to 2km. 25G
SFP28-LR does not require FEC and can support link distance of 10km SMF.
If you connect the 25G SR optics between the S5048-ON and Z9100, enable FEC CL74 on S5048-ON for the link to come
up.
DellEMC#show interfaces hundredGigE 1/49
hundredGigE 1/49 is up, line protocol is up
Hardware is DellEMCEth, address is 00:12:32:12:42:13
Current address is 00:12:32:12:42:13
Pluggable media present, QSFP28 type is 100GBASE-CR4-3M
AutoNegotiation is ON
Forward Error Correction(FEC) configured is cl91
FEC status is cl91Interface index is 2101774
Internet address is not set
Mode of IPv4 Address Assignment : NONE
DHCP Client-ID :001232124213
MTU 9416 bytes, IP MTU 9398 bytes
LineSpeed 100000 Mbit
Flowcontrol rx off tx off
ARP type: ARPA, ARP Timeout 04:00:00
Last clearing of "show interface" counters 00:31:23
Queueing strategy: fifo
Input Statistics:
32992398774 packets, 2243483116632 bytes
0 64-byte pkts, 32992398774 over 64-byte pkts, 0 over 127-byte pkts
0 over 255-byte pkts, 0 over 511-byte pkts, 0 over 1023-byte pkts
0 Multicasts, 0 Broadcasts, 32992398774 Unicasts
0 runts, 0 giants, 0 throttles
0 CRC, 0 overrun, 0 discarded
669 FEC bit errors, 172 FEC uncorrected code words
Output Statistics:
0 packets, 0 bytes, 0 underruns
0 64-byte pkts, 0 over 64-byte pkts, 0 over 127-byte pkts
0 over 255-byte pkts, 0 over 511-byte pkts, 0 over 1023-byte pkts
0 Multicasts, 0 Broadcasts, 0 Unicasts
0 throttles, 0 discarded, 0 collisions, 0 wreddrops
Rate info (interval 299 seconds):
Input 00.00 Mbits/sec, 0 packets/sec, 0.00% of line-rate
Output 00.00 Mbits/sec, 0 packets/sec, 0.00% of line-rate
Time since last interface status change: 00:27:30
View Advanced Interface Information
The following options have been implemented for the show [ip | running-config] interfaces commands for (only)
stack-unit interfaces.
When you use the configured keyword, only interfaces that have non-default configurations are displayed. Dummy stack-unit
interfaces (created with the stack-unit command) are treated like any other physical interface.
The following example lists the possible show commands that have the configured keyword available:
DellEMC#show interfaces configured
DellEMC#show interfaces stack-unit 1 configured
DellEMC#show interfaces twentyFiveGigE 1 configured
DellEMC#show interfaces fortyGigE 1 configured
DellEMC#show ip interface configured
DellEMC#show ip interface stack-unit 1 configured
DellEMC#show ip interface twentyFiveGigE 1 configured
DellEMC#show ip interface hundredGigE 1 configured
DellEMC#show ip interface br configured
DellEMC#show ip interface br stack-unit 1 configured
DellEMC#show ip interface br twentyFiveGigE 1 configured
DellEMC#show running-config interfaces configured
DellEMC#show running-config interface twentyFiveGigE 1 configured
DellEMC#show running-config interface hundredGigE 1 configured
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Interfaces