Description

SRX1500 in cluster deployment or standalone, showing Major FPC 0 Hard errors due to EEPROM corruption

Symptoms

  • Chassis Alarms will prompt Major FPC 0 hard Errors

> show chassis alarms no-forwarding
1 alarms currently active
Alarm time               Class  Description
2023-07-12 09:44:37 CEST Major  FPC 0 Hard errors

  • Hardware details will be missing the SN:

> show chassis hardware detail no-forwarding
Hardware inventory:
Item             Version  Part number  Serial number     Description
Chassis
Midplane
CB 0             REV 12   711-053838   BCAK1234          CPU Board

  • Hardware inventory will point out random values instead of the SN

> show chassis hardware extensive
Item       Version Part number Serial number   Description
Chassis
 Jedec Code:  0x7fb0      EEPROM Version:  0x02
                 S/N:        \x10‡fl\x06        <<<<<<<<<<<
 Assembly ID: 0xe0ff      Assembly Version: 00.00
 Date:     00-00-0000    Assembly Flags:  0x1e
 Board Information Record:
 Address 0x00: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 I2C Hex Data:
 Address 0x00: 7f b0 02 ff e0 ff 00 00 00 00 00 00 00 00 00 00
 Address 0x10: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 Address 0x20: 10 e0 df 06 00 00 00 00 00 00 00 00 1e 00 00 00
 Address 0x30: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 Address 0x40: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 Address 0x50: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 Address 0x60: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
 Address 0x70: 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00 00
Midplane
 Jedec Code:  0x51ab      EEPROM Version:  0x0d
                 S/N:        …Ÿ\x06\x01@\x1z\x07\x01        <<<<<<<<<<<
 Assembly ID: 0xe0ff      Assembly Version: 127.63
 Date:     04-44-0000    Assembly Flags:  0x1e

 

  • Logs will indicate Corruption on midplane ID EEPROM:

LCC: send: lcc 1 sending swversion CHASSISD release 21.4R3.15 built by builder on 2022-09-03 07:34:06 UTC
LCC: ch_srxtvp_sno_macaddr_init: Failed sysctl for hw.product.pvi.config.mac_address.from_interface.
LCC: chassis serial number: 10 d0 df 6 0 0
CHASSISD_I2C_MIDPLANE_CORRUPT: Corruption on midplane ID EEPROM (ID: 0xE0FF, MAC address: 0x0, 0x0)
LCC: send: lcc 16777216 sending mac addresses

Solution

Reinstalling the current Junos or upgrading to a different Junos version (any version) might recover the EEPROM from the issue state. If it does not help we must proceed with the RMA of the chassis. 

Modification History

25 Aug 2023: Initial Verison