Collecting the BMC MAC Addresses

This guide will detail how to collect BMC MAC Addresses from a Shasta system with configured switches. The BMC MAC Address is the exclusive, dedicated LAN for the onboard BMC.

If you are here with an unconfigured switch, mileage may vary.

Requirements

  1. Configured switch with SSH access or unconfigured with COM access (serial-over-lan/DB-9)
  2. Another file to record the collected BMC information.

Procedure

  1. Establish an SSH or serial connection to the leaf switch.

    Note: These IPs are examples; 10.X.0.4 may or may not match your setup.

    # SSH over METAL MANAGEMENT
pit# ssh admin@10.1.0.4

# SSH over NODE MANAGEMENT
pit# ssh admin@10.252.0.4

# SSH over HARDWARE MANAGEMENT
pit# ssh admin@10.254.0.4

# or.. serial (device name will vary).
pit# minicom -b 115200 -D /dev/tty.USB1

  2. If you know the ports of your BMCs, you can print out the MAC for those ports -or- if they exist on the same VLAN you should be able to dump the VLAN.

    Syntax is for Onyx and Dell EMC devices - please resort to your CLI usage (press ? or tab to assist on-the-fly).

    If you know the VLAN ID:

    # DellOS 10
sw-leaf-001# show mac address-table vlan 4 | except 1/1/52
VlanId	Mac Address		Type		Interface
4	00:1e:67:98:fe:2c	dynamic		ethernet1/1/11
4	a4:bf:01:38:f0:b1	dynamic		ethernet1/1/27
4	a4:bf:01:38:f1:44	dynamic		ethernet1/1/25
4	a4:bf:01:48:1e:ac	dynamic		ethernet1/1/28
4	a4:bf:01:48:1f:70	dynamic		ethernet1/1/31
4	a4:bf:01:48:1f:e0	dynamic		ethernet1/1/26
4	a4:bf:01:48:20:03	dynamic		ethernet1/1/30
4	a4:bf:01:48:20:57	dynamic		ethernet1/1/29
4	a4:bf:01:4d:d9:9a	dynamic		ethernet1/1/32

    If you know the interface and trunk:

    # DellOS 10
sw-leaf-001# show mac address-table interface ethernet 1/1/32
VlanId	Mac Address		Type		Interface
4	a4:bf:01:4d:d9:9a	dynamic		ethernet1/1/32

    Print everything:

    # DellOS 10
sw-leaf-001# show mac address-table
VlanId	Mac Address		Type		Interface
4	a4:bf:01:4d:d9:9a	dynamic		ethernet1/1/32
....
# Onyx and Aruba
sw-leaf-001# show mac-address-table

  3. In the output from the previous “show mac address-table” command, information will be available for all management NCNs which do not have an external connection for their BMC, such as ncn-m001. The information from these nodes is also needed in ncn_metadata.csv, but will have to be collected via another method, such as the “ipmitool lan print” command. All of the management NCNs should be present in the ncn_metadata.csv file.

    Tip: Mind the index (3, 2, 1…. ; not 1, 2, 3)

    Xname,Role,Subrole,BMC MAC,Bootstrap MAC,Bond0 MAC0,Bond0 MAC1
x3000c0s9b0n0,Management,Storage,94:40:c9:37:77:26,94:40:c9:5f:b5:de,94:40:c9:5f:b5:de,14:02:ec:da:b9:98
                                 ^^^^^^^^^^^^^^^^^

The column heading must match that shown above for csi to correctly parse it. You can take the file you have started and move onto NCN Metadata BondX.