mellanox switch SN2700 extremely slow login

My question is: How can I fix this slow login? Does it need new firmware or software, or…?

We have a Mellanox 100Gb switch (SN2700) that is extremely slow to login via ssh. Eg:

root@local:~# ssh admin@sw100

Mellanox MLNX-OS Switch Management


Last login: Mon Apr 23 20:16:31 2018 from

Mellanox Switch

<-------------- hangs right here for a good five minutes or more

sw100 [standalone: master] >

Once logged in, it’s perfectly fine/responsive as expected. It also appears to work just fine for the servers connected to its ports. My thought is that it might need some

type of update on software or firmware? show version gives me:

sw100 [standalone: master] > show version

Product name: MLNX-OS

Product release: 3.5.1006

Build ID: #1-dev

Build date: 2016-03-09 11:29:31

Target arch: x86_64

Target hw: x86_64

Built by: dvirl@fit150

Version summary: X86_64 3.5.1006 2016-03-09 11:29:31 x86_64

Product model: x86onie

Host ID: xxx

System serial num: Defined in system VPD

System UUID: xxx

Uptime: 575d 0h 6m 48.576s

CPU load averages: 1.00 / 1.01 / 1.05

Number of CPUs: 2

System memory: 2136 MB used / 13841 MB free / 15977 MB total

Swap: 0 MB used / 0 MB free / 0 MB total

sw100 [standalone: master] >

I would appreciate any comments or feedback.

PS I placed this in Mellanox OFED for lack of a more obvious (or allowed!) place; if there’s somewhere else more suitable

for this question, please let me know where and I will move the question.


C Moore

Upgrading the switch to the latest mellanox Onyx resolved the issue