H3C S7500X-G Series, Installation Manual, Page: 43 / 79

3-14
Connecting a network cable
CAUTION:
When you connect a network cable, follow these restrictions and guidelines:
•
Make sure the two modular ends of a network cable are compatible with the ports into which they
will be inserted.
•
Do not touch the golden plating on the two modular ends of a network cable.
•
To avoid network cable damage and signal loss, do not strain or tangle a network cable.
•
Before inserting a modular end of a network cable into a port, make sure the module aligns with
the port correctly.
•
The bend radius of a copper cable must be a minimum of 15 times the copper cable diameter.
•
The bend radius of a fiber cable must be a minimum of 20 times the fiber cable diameter.
To connect ports over a short distance, use network cables as follows:
•
SFP+ DAC cable —Connects two SFP+ ports over a short distance.
•
QSFP+ DAC cable or QSFP+ fiber cable —Connects two QSFP+ ports over a short distance.
•
QSFP28 fiber cable —Connects two QSFP28 ports over a short distance.
•
QSFP+ to SFP+ DAC cable —Connects one QSFP+ port to four SFP+ ports over a short
distance.
The network cables are hot swappable. The connection procedure is similar for these cables. The
following procedure connects an SFP+ DAC cable.
To connect an SFP+ DAC cable:
1. Wear an ESD wrist strap and make sure it makes good skin contact and is reliably grounded.
For more information, see "
Attaching an ESD wrist strap ."
2. Remove the dust plug from the target fiber port.
3. Unpack the cable.
4. As shown in Figure 3-15 , align the module end of the cable with the fiber port and push it gently
into the port until you feel it snaps into place.
Transceiver modules and fiber ports have disorientation rejection structures. If you cannot
insert a transceiver module easily into a port, remove and reorient the transceiver module.
Figure 3-15 Connecting an SFP+ DAC cable
(1) Pull latch (2) Connector
1 2