! #369/#394: Convert cross-rack trunk ch1 from static (mode=on) to LACP
! Switch: core-sw01 (Dell PowerConnect 5448, rack 5)
! WHEN: Friday maintenance window — BOTH switches must change together
! RISK: Brief storage-net outage during transition (seconds)
!
! Current: g13-g16 in ch1, mode=on (static, no failure detection)
! Target:  g13-g16 in ch1, mode=auto (LACP active partner negotiation)
!
! NOTE: core-sw01 hash stays layer-2-3 (hardware limit — best available)
!       tor3-stor hash stays layer-2-3-4 (already set)
!
! IMPORTANT: Run this SIMULTANEOUSLY with tor3-stor change.
!   If one side is LACP and other is static, trunk goes down until
!   both sides match. Plan for ~30s storage-net outage.
!
enable
configure
interface range ethernet g13-g16
  no channel-group
  channel-group 1 mode auto
exit
exit
show interfaces status port-channel 1
show lacp port-channel 1
copy running-config startup-config