Nokia 7250 IXR-10 power-module provisioning

When it comes to the initial configuration of the Nokia/Alcatel equipment, card provisioning is necessary before the first use. I’ve covered the whole process in this article. But there are situations when it’s not enough. I’ve learned it the hard way, and that’s why I want to cover such a scenario in this article.

Platform

This article is based on the physical device, Nokia 7250 IXR-10 interconnect router. It can be equiped with a 8 IMM cards, and 12 power supply units.

In this case, the router is equipped with 2 imm36-100g-qfsp28 cards. As you can conclude from the card name, it’s an IMM card with 36 QSFP28 ports, 100Gb/s each.

Card provisioning

First of all, let’s provision both cards. To achieve that, the following commands were used.

*A:GARZUM.NET-NOKIA-7250-IXR10# configure card 1 card-type "imm36-100g-qsfp28"
*A:GARZUM.NET-NOKIA-7250-IXR10# configure card 2 card-type "imm36-100g-qsfp28"

After card provisioning, we can check card status with show card command.

As we can see on the screenshoot, the cards are now provisioned, and administratively up, but the operational state is failed.

We can fetch more information about a card using show card 1 detail command. Down below there is a part of the output from that command.

There is clear information, that card is not working because there is not enough power.

We can also take look at the logs during troubleshooting. You can display device logs using show log log-id 99 command. Looking at log entries, there is clear information, that we’re struggling with the lack of power.

*A:GARZUM.NET-NOKIA-7250-IXR10# show log log-id 99

===============================================================================
Event Log 99
===============================================================================
Description : Default System Log
Memory Log contents  [size=500   next event=84  (not wrapped)]

83 2020/05/06 15:52:06.973 UTC MINOR: CHASSIS #2109 Base Power Zone 1
"The peak nodal power for zone 1 consumption dropped below the configured safety level threshold of 100 percent"

82 2020/05/06 15:52:06.072 UTC MINOR: CHASSIS #2108 Base Power Zone 1
"The peak nodal power for zone 1 consumption exceeded the configured safety level threshold of 100 percent"

81 2020/05/06 15:47:03.577 UTC MAJOR: CHASSIS #2001 Base Card 1
"Class IO Module : failed, reason: Not enough power"

80 2020/05/06 15:47:03.577 UTC MINOR: CHASSIS #2002 Base Card 1
"Class IO Module : inserted"

Nokia 7250 IXR-10 can be equipped with 12 power supplies, in this case, 4 power modules are present in the chassis. All of them are connected to the PDU(power distribution unit). The power from present supplies should support the current setup. So why do we have this failure?

Power-module provisioning

It turned out, that besides card provisioning, there is also power-module provisioning necessary on the Nokia 7250 IXR-10 platform.

You can get information about power-modules using show chassis power-module command.

The output is similar to the show card command. We can clearly see, that the chassis is equipped with 4 power supply units. There is also information on their type, and that they’re not provisioned yet.

To provision power modules the following commands were used.

*A:GARZUM.NET-NOKIA-7520-IXR-10# configure system power-module 1 power-module-type "ixr-ac-hvdc-3000"
*A:GARZUM.NET-NOKIA-7520-IXR-10# configure system power-module 2 power-module-type "ixr-ac-hvdc-3000"
*A:GARZUM.NET-NOKIA-7520-IXR-10# configure system power-module 3 power-module-type "ixr-ac-hvdc-3000"
*A:GARZUM.NET-NOKIA-7520-IXR-10# configure system power-module 4 power-module-type "ixr-ac-hvdc-3000"

After the provisioning we can check the status of the power modules.

As we can see, they’re all provisioned and in the up/up state.

Next, let’s check line card status.

The operational status has changed from failed to the up state. Problem solved!

Let’s look at the logs now.

*A:GARZUM.NET-NOKIA-7250-IXR10# show log log-id 99

===============================================================================
Event Log 99
===============================================================================
Description : Default System Log
Memory Log contents  [size=500   next event=95  (not wrapped)]

94 2020/05/06 16:58:51.243 UTC MINOR: CHASSIS #2002 Base Mda 2/1
"Class MDA Module : inserted"

93 2020/05/06 16:56:12.377 UTC MINOR: CHASSIS #2002 Base Card 2
"Class IO Module : inserted"

92 2020/05/06 16:55:54.914 UTC MAJOR: CHASSIS #2003 Base Card 2
"Class IO Module : removed"

91 2020/05/06 16:55:54.914 UTC MAJOR: CHASSIS #2016 Base Equipment
"Clear IO Module 2 failure"

90 2020/05/06 16:55:54.904 UTC MAJOR: CHASSIS #2095 Base Power Zone 1
"The system has reached a sustainable power capacity."

89 2020/05/06 16:55:54.904 UTC MINOR: CHASSIS #2116 Base Power Zone 1
"The provisioned power capacity now supports configured devices."

88 2020/05/06 16:55:52.903 UTC MINOR: CHASSIS #2002 Base Mda 1/1
"Class MDA Module : inserted"

87 2020/05/06 16:53:14.037 UTC MINOR: CHASSIS #2002 Base Card 1
"Class IO Module : inserted"

86 2020/05/06 16:52:56.574 UTC MAJOR: CHASSIS #2003 Base Card 1
"Class IO Module : removed"

85 2020/05/06 16:52:56.574 UTC MAJOR: CHASSIS #2016 Base Equipment
"Clear IO Module 1 failure"

84 2020/05/06 16:51:47.834 UTC CRITICAL: CHASSIS #2097 Base Power Zone 1
"The system has reached a sustainable power capacity for critical equipment."

There is clear information, that we now have enough power to support equipped hardware.

That’s how power-module provisioning configuration looks like in the admin display-config command output.

#--------------------------------------------------
echo "System Configuration"
#--------------------------------------------------
    system
        name "GARZUM.NET-NOKIA-7250-IXR10"
        power-module 1
            power-module-type ixr-ac-hvdc-3000
            no shutdown
        exit
        power-module 2
            power-module-type ixr-ac-hvdc-3000
            no shutdown
        exit
        power-module 3
            power-module-type ixr-ac-hvdc-3000
            no shutdown
        exit
        power-module 4
            power-module-type ixr-ac-hvdc-3000
            no shutdown
        exit
        time
            sntp
                shutdown
            exit
            zone UTC
        exit
    exit