https://www.cisco.com/c/en/us/td/docs/wireless/asr_5000/21-23/VPC-DI-Sys-Admin/21-23-vpc-di-sys-admin/21-17-VPC-DI-Sys-Admin_chapter_01001.html
VPC-DI System Administration Guide, Release 21.23 - System Interfaces and Ports - Cisco
System Interfaces and Ports
system administration guideinterfaces and ports
https://www.cisco.com/c/en/us/td/docs/wireless/asr_5000/21-16_6-10/VPC-DI-Sys-Admin/21-16-VPC-DI-Sys-Admin/21-16-VPC-DI-Sys-Admin_chapter_01001.html
VPC-DI System Administration Guide, Release 21.16 - System Interfaces and Ports - Cisco
System Interfaces and Ports
system administration guideinterfaces and ports