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Cisco Bug: CSCvv16655 - Duplicate entries for Intel X710-DA2 interfaces after disabling DA4 NIC on CIMC

Last Modified

Sep 04, 2020

Products (1)

  • Cisco DNA Center

Known Affected Releases

DNAC1.3.3.6

Description (partial)

Symptom:
In a 3-node cluster of Gen-2 Cisco DNA Center appliances (Cisco part number DN2-HW-APL-XL) version 1.3.3.6, while running the Maglev wizard, 8 interfaces can be seen where the first 4 interfaces are from the DA4 adapter which is enabled from the CIMC side. All the following interfaces have no configuration.

enp237s0f0
enp237s0f1
enp237s0f2
enp237s0f3

Then, 4 interfaces are seen for the DA2 adapter which are in use:

enp53s0f0
enp53s0f1
enp69s0f0
enp69s0f1

Once the DA4 adapter is disabled from the CIMC side, (under Compute > BIOS > I/O) 8 interfaces are seen again on the maglev side, but this time first 4 interfaces are duplicate entries for those from the DA2 adapter, with a blank configuration. 

enp53s0f0 (blank config)
enp53s0f1 (blank config)
enp69s0f0 (blank config)
enp69s0f1 (blank config)
enp53s0f0 (with config)
enp53s0f1 (with config)
enp69s0f0 (with config)
enp69s0f1 (with config)

Conditions:
This was observed in a 3-node cluster of Gen-2 appliances, that have the Intel X710-DA4 network interface card (NIC) disabled as instructed in the Install Guide, at this location:

https://www.cisco.com/c/en/us/td/docs/cloud-systems-management/network-automation-and-management/dna-center/1-3-1-0/install_guide/M5/b_cisco_dna_center_install_guide_1_3_1_0_M5/b_cisco_dna_center_install_guide_1_3_1_0_M5_chapter_011.html#task_cww_dqj_qjb
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