For the QFX3500 platform, there may be a difference between the chassis serial number and the Flexible PIC Concentrator (FPC) serial number. The FPC serial number will be used to form a Virtual Chassis (VC)/Virtual Chassis Fabric (VCF). In this case, after VC/VCF is formed, 'show chassis hardware' will display only FPC serial number, not the chassis serial number.
'show chassis hardware'
There are two SN format for QFX3500:
The command, ‘show chassis hardware’ will display both the chassis AND the FPC serial numbers for standalone QFX3500.
‘show chassis hardware’
root> show chassis hardware Hardware inventory: Item Version Part number Serial number Description Chassis P0204 QFX3500 Pseudo CB 0 Routing Engine 0 BUILTIN BUILTIN QFX Routing Engine FPC 0 REV 09 750-036931 BBAK8704 QFX3500-48S4Q CPU BUILTIN BUILTIN FPC CPU PIC 0 BUILTIN BUILTIN 48x 10G-SFP+ PIC 1 BUILTIN BUILTIN 4x 40G-QSFP+ Xcvr 0 REV 01 740-032986 QA460315 QSFP+-40G-SR4 Xcvr 1 REV 01 740-032986 QA460318 QSFP+-40G-SR4 MGMT BRD REV 05 750-036946 BBAK8652 QFX3500-MGMT-RJ45-AFI Power Supply 0 Power Supply 1 Fan Tray 0 QFX3500 Fan Tray, Front to Back Airflow Fan Tray 1 QFX3500 Fan Tray, Front to Back Airflow Fan Tray 2 QFX3500 Fan Tray, Front to Back Airflow {master:0} root> {master:0}
'show virtual-chassis ' will display only the FPC serial number for standalone devices . This serial number will be used to form a VC/VCF in pre-provisioned mode.
'show virtual-chassis
root> show virtual-chassis Virtual Chassis ID: 6986.2afe.b198 Virtual Chassis Mode: Enabled Mstr Mixed Route Neighbor List Member ID Status Serial No Model prio Role Mode Mode ID Interface 0 (FPC 0) Prsnt BBAK8704 qfx3500s 128 Master* N VC
virtual-chassis { preprovisioned; no-split-detection; member 0 { role routing-engine; serial-number BBAK8704; member 1 { role routing-engine; serila-number P2020; root@boa-te-3500v> show virtual-chassis status Preprovisioned Virtual Chassis Virtual Chassis ID: 25f2.bb72.5ddb Virtual Chassis Mode: Enabled Mstr Mixed Route Neighbor List Member ID Status Serial No Model prio Role Mode Mode ID Interface 0 (FPC 0) Prsnt BBAK8704 qfx3500s 129 Master* N VC 1 vcp-255/1/0 1 vcp-255/1/1 1 vcp-255/1/2 1 vcp-255/1/3 1 (FPC 1) Prsnt P2020-C qfx3500s 129 Backup N VC 0 vcp-255/1/1 0 vcp-255/1/0 0 vcp-255/1/2 0 vcp-255/1/3
If the device has a different SN for the chassis, and the FPC is not primary in VC/VCF, 'show virtual-chassis status ' and 'show chassis hardware' will display only the FPC serial number, not the chassis. serial number.
'show virtual-chassis status
The following method can be used to retrieve chassis SN of individual FPC.
'show chassis hardware extensive'
Example (Aunit from JTAC lab (Chassis SN:P0822 / FPC SN: BBAK1186):
FPC 1 REV 11 750-036931 BBAK1186 QFX3500-48S4Q Jedec Code: 0x7fb0 EEPROM Version: 0x02 P/N: 750-036931 S/N: S/N BBAK1186 Assembly ID: 0x09a5 Assembly Version: 02.11 Date: 05-21-2011 Assembly Flags: 0x00 Version: REV 11 CLEI Code: CMMFX00BRA ID: QFX3500-48S4Q FRU Model Number: QFX3500-48S4Q Board Information Record: Address 0x00: ad 01 01 04 84 18 88 d5 2c 24 ff ff ff ff ff ff I2C Hex Data: Address 0x00: 7f b0 02 ff 09 a5 02 0b 52 45 56 20 31 31 00 00 Address 0x10: 00 00 00 00 37 35 30 2d 30 33 36 39 33 31 00 00 Address 0x20: 53 2f 4e 20 42 42 41 4b 31 31 38 36 00 15 05 07 Address 0x30: db ff ff ff ad 01 01 04 84 18 88 d5 2c 24 ff ff Address 0x40: ff ff ff ff 01 43 4d 4d 46 58 30 30 42 52 41 51 Address 0x50: 46 58 33 35 30 30 2d 34 38 53 34 51 00 00 00 00 Address 0x60: 00 00 00 00 00 00 42 00 00 ff ff ff ff ff ff ff Address 0x70: ff ff ff 11 50 30 38 32 32 00 00 00 00 00 00 00
The 'show chassis hardware' command should be executed from primary only. If issued from other members, it will be incomplete.
2021-03-25: Updated the article terminology to align with Juniper's Inclusion & Diversity initiatives.