Installation guide

Transceivers are keyed so that they can only be inserted with the correct orientation. If a transceiver
does not slide in easily, ensure that it is correctly oriented.
2. Position a cable so that the key (the ridge on one side of the cable connector) is aligned with the slot
in the transceiver. Insert the cable into the transceiver until the latching mechanism clicks.
Cables are keyed so that they can be inserted in only one way. If a cable does not slide in easily,
ensure that it is correctly oriented.
3. Repeat step 1 and step 2 for the remaining ports.
4. If you are using direct-attach cables, you can insert them at this time.
5. Organize the cables. Refer to Managing cables on page 49
6. Verify the device port status using the show interface command.
7. Verify fabric connectivity using the show fabric all command.
Installing QSFP transceivers and cables
Complete the following steps to install the QSFP transceivers and cables in the 12x40 GbE and 27x40
GbE line cards.
Because each QSFP transceiver consists of four 10 GbE ports, be aware that any problems with one
port could affect all four ports in the quad.
1. Position one of the QSFP transceivers so that the key is oriented correctly to the port.
2. Grasping the edges of the transceiver, insert the it into the port until it is firmly seated. You can feel a
small click when it completely seats. If your transceiver has a bail, pull the bail up until it latches in
the closed position.
Transceivers are keyed so that they can only be inserted with the correct orientation. If a transceiver
does not slide in easily, ensure that it is correctly oriented.
When the transceiver is correctly seated, the status LED will turn solid amber.
3. Remove the protective plug from the QSFP transceiver and the protective cap from the special QSFP
cable and insert it into the transceiver until it is firmly seated.
The cables are also keyed to fit into the transceivers correctly.
When the cable is correctly seated, the status LED will change from amber to green.
4. Repeat step 1 through step 2 for the remaining QSFP ports.
5. Organize the cables. Refer to Managing cables on page 49
Managing cables
Cables can be organized and managed in a variety of ways; for example, using cable channels on the
port sides of the rack or patch panels to minimize cable management. The cable management comb is
located above the modules on the port side of the chassis. Brocade recommends the following best
practices for cable management.
• Leave at least 1 m (3.28 ft.) of slack for each port cable. This provides room to remove and replace
the device, allows for inadvertent movement of the rack, and helps prevent the cables from being
bent to less than the minimum bend radius.
• The minimum bend radius should be no smaller than ten times the cable radius. The minimum radius
to which a 50 micron cable can be bent under full tensile load is 5.1 cm (2 in.). For a cable under no
tensile load, that minimum is 3.0 cm (1.2 in.).
• If ISL trunking is in use, group the cables by trunking group.
Installing QSFP transceivers and cables
Brocade VDX 8770-8 Hardware Installation Guide 49
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