CloudEngine 6881 and QSFP+/QSFP28 DAC

Created: Jan 11, 2020 08:44:53Latest reply: Jan 15, 2020 02:15:25 96 3 0 0
  Rewarded Hi-coins: 0 (problem resolved)
When HPE Synergy is connected to the CE6881 switch via 40Gb QSFP+ DAC, interfaces do not up.
Interfaces state - DOWN(Cable for stack or peer-link interface only)

In the "Configuration Guide - Interface Management" found:
"CE6881, CE6820, and CE6863 support QSFP+ QSFP28 or high-speed cables only in stack or M-LAG scenarios. If these cables are used on interfaces of the switches in other scenarios, the interfaces will enter the Down (Cable for stack or peer-link interface only) state"

If instead of 40Gb QSFP+ DAC to use 40Gb QSFP+ AOC will work?
This is a technical limitation or marketing?
Why is there no information about this limitation in the Datasheet?

P.S.
CE6855 has no such limitation and
when HPE Synergy is connected to the CE6855 switch via 40Gb QSFP+ DAC, everything works.
  • x
  • convention:

Featured Answers
chenhui
Admin Created Jan 15, 2020 02:15:25 Helpful(0) Helpful(0)

Posted by lodo at 2020-01-11 10:59 The cable QSFP-40G-CU3M (3 m QSFP+ - QSFP+ high-speed cable)is in the switch compatibility listCE688 ...

From the documentation, 40Gb QSFP+ AOC could work, cable QSFP-40G-CU3M only can be used when the interface are used in stack or M-LAG scenario.

Please refer  CE6881

  • x
  • convention:

All Answers
chenhui
chenhui Admin Created Jan 11, 2020 09:30:07 Helpful(0) Helpful(0)

@lodo hello,

it's recommended to refer the Cables listed in the documentation.

By the way, it's better not to use the third party high speed cables.

  • x
  • convention:

lodo
lodo Created Jan 11, 2020 10:59:28 Helpful(0) Helpful(0)

The cable
QSFP-40G-CU3M (3 m QSFP+ - QSFP+ high-speed cable)
is in the switch compatibility list
CE6881-48S6CQ (CE6881 V200R005C20SPC800)
  • x
  • convention:

chenhui
chenhui Admin Created Jan 15, 2020 02:15:25 Helpful(0) Helpful(0)

Posted by lodo at 2020-01-11 10:59 The cable QSFP-40G-CU3M (3 m QSFP+ - QSFP+ high-speed cable)is in the switch compatibility listCE688 ...

From the documentation, 40Gb QSFP+ AOC could work, cable QSFP-40G-CU3M only can be used when the interface are used in stack or M-LAG scenario.

Please refer  CE6881

  • x
  • convention:

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