4-44
•
For more information about SFP28 port configurations, see Ethernet interface
configuration in
H3C S6805 & S6825 & S6850 & S9850 Switch Series Layer
2
—
LAN Switching Configuration Guide
Transceiver modules
and cables
•
S6850-56HF and S6850-56HF-SAN switches support 25G SFP28 transceiver
modules/cables, 10G SFP+ transceiver modules/cables, and 1G SFP
transceiver modules
•
The LSWM124TG2H interface module supports 25G SFP28 transceiver
modules/cables (instead of SFP-25G-LR-SM1310), 10G SFP+ transceiver
modules/cables, and 1G SFP transceiver modules
•
LSWM116FC interface modules support only SFP-25G-LR-SM1310
transceiver modules
NOTE:
For information about support for transceiver modules and cables of an SFP28 port,
see
H3C S6850 & S9850 Switch Series and Transceivers Compatibility Matrix
You must use two BIDI transceiver modules in pairs. For example, if one end uses
the SFP-XG-LX-SM1270-BIDI transceiver module, the peer end must use the
SFP-XG-LX-SM1330-BIDI transceiver module
The maximum transmission distance for SFP-25G-SR-MM850 depends on the
enabling status of FEC negotiation, as shown in
. For more information
about FEC negotiation, see Ethernet interface configuration in
H3C S6805 & S6825
& S6850 & S9850 Switch Series Layer 2
—
LAN Switching Configuration Guide
Other restrictions
•
The LS-6850-56HF, LS-6850-56HF-H1, or S6850-56HF-SAN switch supports
a maximum of eight long-haul SFP+ transceiver modules. If you install
LSWM124TG2H interface modules on the S6850-2C or S9850-4C switch,
each interface module supports a maximum of eight long-haul SFP+
transceiver modules. The available long-haul SFP+ transceiver module models
are as follows:
SFP-XG-LH40-SM1550
SFP-XG-LH40-SM1550-D
SFP-XG-LH80-SM1550
SFP-XG-LH80-SM1550-D
•
Installed with an SFP-GE-T or SFP-GE-T-D transceiver module, an SFP28 port
can operate only at 1 Gbps
•
If the switch connects to the peer device through an SFP-GE-T or SFP-GE-T-D
transceiver module, packet loss occurs when the switch restarts, because the
peer interface comes up before the local interface can come up. As a best
practice, configure dynamic link aggregation to avoid such an issue if the
switch is connected to the peer device through an aggregate link
Table4-5 Maximum transmission distance for SFP-25G-SR-MM850
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)
