38
Transceiver/cable
Central
wavelength
Connector Cable
Max
transmission
distance
SFP-XG-LX220-MM1310
1310 nm
LC
62.5/125
μ
m
multi-mode
optical fiber
220 m (721.8 ft)
SFP-XG-LX-SM1310 1310
nm LC
9/125
μ
m
single-mode
optical fiber
10 km (6.21 miles)
10 GE SFP+ cables
LSWM1STK
N/A
N/A
SFP+ cable
0.65 m (2.1 ft)
LSWM2STK
N/A
N/A
SFP+ cable
1.2 m (3.9 ft)
LSWM3STK
N/A
N/A
SFP+ cable
3 m (9.8 ft)
LSTM1STK
N/A
N/A
SFP+ cable
5 m (16.4 ft)
LSTM2STK
N/A
N/A
SFP+ cable
7 m (22.97 ft)
The following subsections describe several H3C recommended IRF connection schemes. All these
schemes use a ring topology.
IMPORTANT:
In these schemes, all physical IRF ports are located on the same side. If physical IRF ports are on different
sides, you must measure the distance between them to select an appropriate cable.
Connecting the IRF member switches in one rack
Use short-haul and long-haul SFP+ cables to connect the IRF member switches (four switches in this
example) in a rack as shown in
. The switches in the ring topology (see
) are in the
same order as connected in the rack.
Figure 49
Connecting the switches in one rack (Method 1)
