Rebooting NCNs and PXE Fails

The following are common error messages when PXE fails:

2021-04-19 23:27:09   PXE-E18: Server response timeout.
2021-02-02 17:06:13   PXE-E99: Unexpected network error.

Procedure

  1. Verify the IP helper-address on VLAN 1 on the switches.

    This is the same configuration as above “Aruba Configuration”.

    Verify DHCP packets can be forwarded from the workers to the MTL network (VLAN1).

    • If the worker nodes cannot reach the Metal (MTL) network DHCP will fail
    • ALL WORKERS need to be able to reach the MTL network
    • This can normally be achieved by having a default route

  2. Run connectivity tests.

    ncn-w001# ping 10.1.0.1

    Example output:

    PING 10.1.0.1 (10.1.0.1) 56(84) bytes of data.
64 bytes from 10.1.0.1: icmp_seq=1 ttl=64 time=0.361 ms
64 bytes from 10.1.0.1: icmp_seq=2 ttl=64 time=0.145 ms

    If this fails, CAN may be misconfigured, or a route might need to be added to the MTL network.

    ncn-w001# ip route add 10.1.0.0/16 via 10.252.0.1 dev bond0.nmn0

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