Sharing resources

Answer:

If you can provide evidence that sharing the network cabinet will not affect your information security risks (e.g., through a risk assessment), or that there are implemented controls to maintain the risks in acceptable levels, then you will have no complications with your ISO 27001 implementation.

These articles will provide you further explanation about risk assessment:
- ISO 27001 risk assessment & treatment – 6 basic steps https://advisera.com/27001academy/knowledgebase/iso-27001-risk-assessment-treatment-6-basic-steps/
- How to manage network security according to ISO 27001 A.13.1 https://advisera.com/27001academy/blog/2016/06/27/how-to-manage-network-security-according-to-iso-27001-a-13-1/
- How to manage the security of network services according to ISO 27001 A.13.1.2 https://advisera.com/27001academy/blog/2017/02/13/how-to-manage-the-security-of-network-services-according-to-iso-27001-a-13-1-2/
- Requirements to implement network segregation according to ISO 27001 control A.13.1.3 https://advisera.com/27001academy/blog/2015/11/02/requirements-to-implement-network-segregation-according-to-iso-27001-control-a-13-1-3/