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Verify management interface IP address after system board swap

How To


Summary

Verifying the management interface of a Qradar managed host has an IP after a system board swap.

Objective

On occasion, where a hardware appliance has had a system board replacement, the MAC address associated with the management interface might have changed. This can cause the management interface not to get an IP when the network service is started.

Steps

  1. In order to verify, the following commands can be run (on out of band console, for example IMM, iLO).
  2. Confirm the HWADDR configured is correct: 
    ip link show dev `cat /etc/management_interface`
    Note the value returned.
  3. Compare with configured value: 
    grep HWADDR /etc/sysconfig/network-scripts/ifcfg-`cat /etc/management_interface`
    NOTE: using back-tick (ascii 96) not single quotation mark.
  4. If the HWADDR values are different, edit the file /etc/sysconfig/network-scripts/ifcfg-`cat /etc/management_interface` setting the HWADDR to be the same as return value from ip link show dev `cat /etc/management_interface`.
  5. Restart network service: 
    systemctl restart network
  6. Verify IP: 
    ip addr show dev `cat /etc/management_interface`
  7. Verify default gateway: 
    route -n
  8. Verify host accessible with ssh from a workstation terminal: 
    ssh {user}@{IP}

Document Location

Worldwide

[{"Type":"MASTER","Line of Business":{"code":"LOB24","label":"Security Software"},"Business Unit":{"code":"BU059","label":"IBM Software w\/o TPS"},"Product":{"code":"SSBQAC","label":"IBM Security QRadar SIEM"},"ARM Category":[{"code":"a8m0z000000cwtNAAQ","label":"Deployment"}],"ARM Case Number":"","Platform":[{"code":"PF025","label":"Platform Independent"}],"Version":"All Versions"}]

Document Information

Modified date:
16 June 2022

UID

ibm16584443

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