IP Address of the Infiniband Switch changes during firmware upgrade

Asset ID:	1-72-2397110.1
Update Date:	2018-05-14
Keywords:

Solution Type Problem Resolution Sure

Solution 2397110.1 : IP Address of the Infiniband Switch changes during firmware upgrade

Applies to:

Sun Datacenter InfiniBand Switch 36 - Version All Versions to All Versions [Release All Releases]
Sun Network QDR InfiniBand Gateway Switch - Version All Versions to All Versions [Release All Releases]
Information in this document applies to any platform.

Symptoms

IP address of the Infiniband Switch changes during firmware upgrade from 2.1.8 to 2.2.x or reboot

Changes

During firmware upgrade of the Infiniband Switch from version 2.1.8 to 2.2.7-1 or 2.2.x IP Address of the Infiniband Switch changes

Before Firmware Upgrade:

[root@ibswitch-ib1 ~]# ibswitches
Switch : 0x0010e0b11e11a0a0 ports 36 "SUN DCS 36P QDR ibswitch-ib1 32.21.66.101" enhanced port 0 lid 9 lmc 0
Switch : 0x0010e0b1220ca0a0 ports 36 "SUN DCS 36P QDR ibswitch-ib2 32.21.66.102" enhanced port 0 lid 3 lmc 0

After/During Firmware Upgrade OR Reboot:

Cause

1. This issue occurs due to incorrect interface configuration on the Infiniband switch.

2. This issue occurs due to incorrect configuration of ib interface as eth0 instead of ib0 which is used for managing the IB Switch (eth0)

Solution

IP address of an Infiniband Switch changes to a private IP or Incorrect IP Address during FW Upgrade from 2.1.8 to 2.2.x or reboot.

This issue occurs due to incorrect interface configuration on the Infiniband Switch where other infiniband interface such as ib0 has been configured incorrectly as an eth0 interface.

[root@ibswitch-ib2 ~]# cat /etc/sysconfig/network-scripts/ifcfg-ib0
DEVICE=eth0 <================
BOOTPROTO=static
IPADDR=10.196.67.2
NETMASK=255.255.255.0
ONBOOT=yes

Due to above misconfiguration during the firmware upgrade from the 2.1.8 to 2.2.7-1 or 2.2.X the IP Address of the Infiniband Switch will change to the incorrect IP Address.

Configuring the IP Address for the IB Switch by modifying ifcfg-eth0 file via root login or undocumented commands is not supported.

Infiniband command usage should be restricted to documented commands and documented config files by using ILOM shell instead of root shell.

The correct way of configuring IP Address of the Infiniband Switch is shared as below:

1. Log in to the ILOM CLI as an Administrator via Serial Console

2. At the command prompt, type:

-> cd /SP/network
/SP/network

-> set pendingipaddress=x.x.x.x
Set 'pendingipaddress' to 'x.x.x.x'

-> set pendingipgateway=x.y.x.y
Set 'pendingipgateway' to 'x.y.x.y'

-> set pendingipnetmask=x.x.y.z
Set 'pendingipnetmask' to 'x.x.y.z'

-> set commitpending=true
Set 'commitpending' to 'true'

-> show /SP/network/ ipaddress

/SP/network
Properties:
ipaddress = x.x.x.x

Note:
1. Changing the IP address will disconnect your active session if you are connected to ILOM over a network.
2. Settings take effect as soon you set commitpending to true.

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