task 2 updated

2. Verify SSH access to the host and the DPU

Both logins work. Recaptured 2026-09-29.

Dell host root and iDRAC root are the same passwords that already work on the other Dell lab servers. The BF3 ubuntu password is in 1Password. ubuntu is the DPU user.

Host

ssh root@172.22.1.5 → root@dh5. Ubuntu 24.04.5, management eno12399np0 172.22.1.5/16.

This is the live host address. The earlier temporary 172.22.222.14 is gone.

If the host OS is down: ssh root@172.22.2.5 (Dell iDRAC, racadm>>). Virtual Console logs into dh5 as root. That is the Dell BMC, not the DPU.

DPU

From the VPN: ssh ubuntu@172.22.222.3 → hostname localhost.localdomain. Ubuntu 24.04.5, /etc/mlnx-release bf-bundle-3.5.0-89_26.07_ubuntu-24.04_64k_prod. Interface is oob_net0 (unknown pool). Planned 172.22.3.5 is not assigned.

From dh5 (rshim): ssh ubuntu@192.168.100.2 → same hostname, same password. Recaptured 2026-09-29: ping 2/2 and SSH. Host side is tmfifo_net0 192.168.100.1/30.

If /dev/rshim0 is missing on dh5:

systemctl start rshim
ip link set tmfifo_net0 up
ip addr add 192.168.100.1/30 dev tmfifo_net0
ping -c 2 192.168.100.2
ssh ubuntu@192.168.100.2

modprobe rshim fails. This rshim is a userspace service. On 2026-09-29 the service was already running.

Inventory lists bf3 as ansible_user=root at 172.22.3.5. The working OS login is ubuntu at 172.22.222.3 or 192.168.100.2.

BlueField-3 BMC

Not required for this task. Recaptured the same day: ssh root@172.22.222.2 → root@dpu-bmc.

Addresses used

Role	Address	Path
DH5 OS	172.22.1.5	host management (eno12399np0), root
DH5 iDRAC / BMC	172.22.2.5	hardware management, root
BF3 BMC	172.22.222.2	hardware management, root (dpu-bmc)
BF3 Ubuntu	172.22.222.3	SSH via OOB (oob_net0), ubuntu
BF3 Ubuntu via rshim	192.168.100.2	SSH via PCIe (tmfifo_net0), ubuntu
BF3 enp3s0f0s0	172.16.3.26	data network
BF3 enp3s0f1s0	172.16.3.139	data network

Reproduce

1. Connect to the lab VPN.
2. Host: ssh -o ServerAliveInterval=30 root@172.22.1.5.
3. DPU OS: ssh -o ServerAliveInterval=30 ubuntu@172.22.222.3.
4. From dh5, the second path: ssh ubuntu@192.168.100.2.
5. Host down: ssh root@172.22.2.5, then Virtual Console as root.
6. Card BMC: ssh root@172.22.222.2.