![H3C S6826 Series Installation Manual Download Page 52](http://html1.mh-extra.com/html/h3c/s6826-series/s6826-series_installation-manual_4230245052.webp)
4-8
•
Table4-16 SFP28 transceiver modules available for the SFP28 ports
SFP28
transceiver
module
Central
wavelength
(nm)
Connector
Fiber type
and diameter
(µm)
Modal
bandwidth
(MHz*km)
Maximum
transmission
distance
SFP-25G-SR
-MM850
850
LC
Multi-mode,
50/125
2000
•
FEC negotiation
disabled: 30 m
(98.43 ft)
•
FEC negotiation
enabled: 70
(229.66 ft)
4700
•
FEC negotiation
disabled: 40 m
(131.23 ft)
•
FEC negotiation
enabled: 100 m
(328.08 ft)
NOTE:
For more information about FEC negotiation, see Ethernet interface configuration in
H3C S6826 &
S9826 Switch Series Layer 2 –LAN Switching Configuration Guide
.
Table4-17 25G SFP28 copper cables available for the SFP28 ports
25G SFP28 copper cable
Max transmission distance
SFP-25G-D-CAB-1M
1 m (3.28 ft)
SFP-25G-D-CAB-3M
3 m (9.84 ft)
Table4-18 25G SFP28 fiber cables available for the SFP28 ports
25G SFP28 fiber cable
Max transmission distance
SFP-25G-D-AOC-3M
3 m (9.84 ft)
SFP-25G-D-AOC-5M
5 m (16.40 ft)
SFP-25G-D-AOC-7M
7 m (22.97 ft)
SFP-25G-D-AOC-10M
10 m (32.81 ft)
SFP-25G-D-AOC-20M
20 m (65.62 ft)
IMPORTANT:
An SFP28 port does not support speed and duplex autonegotiation. To connect an SFP28 port to a
peer interface, you must execute the
speed
and
duplex full
commands on both interfaces.
Configure the same speed and duplex mode for the two interfaces and the speed must be the same
as that of the transceiver module or cable installed in the interface.