Cisco Catalyst 4900M Serial number issue

[nmccontent]

We need help to confirm which serial number should be used as device serial number for Cisco Catalyst 4900M devices.

We were reporting Supervisor(Slot 1) serial number as special case for 4900M device but customer is complaining for that.

I couldn't find the reason why 4900M is treated differently than other catalyst models.

Here is the command output from the device:

show inventory

NAME: "Switch System", DESCR: "Cisco Systems, Inc. WS-C4900M 3 slot switch "
PID: MIDPLANE          , VID:      , SN: XXX12345678

NAME: "Supervisor(slot 1)", DESCR: "4900M 10GE (X2) with 8 10GE X2 ports"
PID: WS-C4900M         , VID: V07  , SN: YYY12345678

.. .. .. .. .. .. .. .. .. ..

.. .. .. .. .. .. .. .. .. ..

Show version

.. .. .. .. .. .. .. .. .. ..

.. .. .. .. .. .. .. .. .. ..

cisco WS-C4900M (MPC8548) processor (revision 2) with 524288K bytes of memory.
Processor board ID XXX12345678
MPC8548 CPU at 1.33GHz, Cisco Catalyst 4900M

.. .. .. .. .. .. .. .. .. ..

.. .. .. .. .. .. .. .. .. ..

Show hardware

.. .. .. .. .. .. .. .. .. ..

.. .. .. .. .. .. .. .. .. ..

cisco WS-C4900M (MPC8548) processor (revision 2) with 524288K bytes of memory.
Processor board ID XXX12345678

.. .. .. .. .. .. .. .. .. ..

.. .. .. .. .. .. .. .. .. ..

All these command output contains serial number that matches MIDPLANE’s serial number in the ‘show inventory’ output.

My customer is saying MIDPLANE's serial number should be used as device serial number.

I also found that there is another command “sh idprom chassis” gives serial number information and that also matches MIDPLANE’s serial number.  

I need your expert opinion on this.

[Reza Sharifi]

How about "sh ver"?

HTH

[nmccontent]

Thanks for your response.

Here is the complete sh ver output: [I have changed actual serial number with XXX123456 ]

show version

Cisco IOS Software, Catalyst 4500 L3 Switch Software (cat4500e-ENTSERVICESK9-M), Version 15.2(4)E2, RELEASE SOFTWARE (fc2)
Technical Support: http://www.cisco.com/techsupport
Copyright (c) 1986-2016 by Cisco Systems, Inc.
Compiled Mon 27-Jun-16 10:02 by prod_rel_team

ROM: 12.2(44r)SG5
ASEP105A uptime is 3 years, 33 weeks, 4 days, 7 hours, 24 minutes
System returned to ROM by reload
System restarted at 08:04:21 GMT Tue Sep 6 2016
System image file is "bootflash:cat4500e-entservicesk9-mz.152-4.E2.bin"
Sushi Revision 11, Tatooine Revision 141, Forerunner Revision 1.83

Last reload reason: Reload command

This product contains cryptographic features and is subject to United
States and local country laws governing import, export, transfer and
use. Delivery of Cisco cryptographic products does not imply
third-party authority to import, export, distribute or use encryption.
Importers, exporters, distributors and users are responsible for
compliance with U.S. and local country laws. By using this product you
agree to comply with applicable laws and regulations. If you are unable
to comply with U.S. and local laws, return this product immediately.

A summary of U.S. laws governing Cisco cryptographic products may be found at:
http://www.cisco.com/wwl/export/crypto/tool/stqrg.html

If you require further assistance please contact us by sending email to
export@cisco.com.

cisco WS-C4900M (MPC8548) processor (revision 2) with 524288K bytes of memory.
Processor board ID XXX12345678
MPC8548 CPU at 1.33GHz, Cisco Catalyst 4900M
Last reset from Reload
1 Virtual Ethernet interface
40 Gigabit Ethernet interfaces
8 Ten Gigabit Ethernet interfaces
511K bytes of non-volatile configuration memory.

Configuration register is 0x2102
------------------------------------------------------------
[done]
------------------------------------------------------------

[Reza Sharifi]

To confirm, you may want to look at the actual chassis S/N, which is also located in the front of the chassis.

This link show where it is located.

https://www.cisco.com/c/en/us/td/docs/switches/lan/catalyst4900/4900M/installation/guide/4900Mod/01intro.html

HTH

[nmccontent]

Thanks for pointing me to the link.

I don't have physical device access to check serial number. Is there a way to validate using CLI? I can provide complete command output if needed.

 I can still ask customer to check on the physical device. but not sure if he can gets it.

Regards,

Shikha

[Leo Laohoo]

4900M is a chassis system. The serial number of the chassis is the one that counts.
Anything else is a "child" of the chassis.

[nmccontent]

Could you help me to point which one is correct serial number in the below output that should be used as device serial  number? Others are clear to identify but between "Switch System" and "Supervisor(slot 1)" which one is the device serial number is my query.

show inventory

NAME: "Switch System", DESCR: "Cisco Systems, Inc. WS-C4900M 3 slot switch "
PID: MIDPLANE          , VID:      , SN: XXX12345678

NAME: "Supervisor(slot 1)", DESCR: "4900M 10GE (X2) with 8 10GE X2 ports"
PID: WS-C4900M         , VID: V07  , SN: YYY12345678

NAME: "TenGigabitEthernet1/1", DESCR: "10Gbase-SR"
PID: X2-10GB-SR , VID: V04 , SN: FNS12345678

NAME: "TenGigabitEthernet1/2", DESCR: "10Gbase-SR"
PID: X2-10GB-SR , VID: V04 , SN: FNS12345679

NAME: "Linecard(slot 2)", DESCR: "10/100/1000BaseT (RJ45) with 20 10/100/1000 baseT "
PID: WS-X4920-GB-RJ45 , VID: V02 , SN: JAE12345678

NAME: "Linecard(slot 3)", DESCR: "10/100/1000BaseT (RJ45) with 20 10/100/1000 baseT "
PID: WS-X4920-GB-RJ45 , VID: V02 , SN: JAE12345666

NAME: "FanTray 1", DESCR: "FanTray"
PID: WS-X4992 , VID: V02 , SN: FOX12345678

NAME: "Power Supply 1", DESCR: "Power Supply ( AC 960W )"
PID: PWR-C49M-1000AC , VID: V01 , SN: SN12345678

NAME: "Power Supply 2", DESCR: "Power Supply ( AC 960W )"
PID: PWR-C49M-1000AC , VID: V01 , SN: SN12345655

[Reza Sharifi]

NAME: "Switch System", DESCR: "Cisco Systems, Inc. WS-C4900M 3 slot switch "
PID: MIDPLANE          , VID:      , SN: XXX12345678

To me, above S/N the closest to be a chassis S/N. And if someone can match this with the one in front of the switch, than you are good to go.

HTH

[nmccontent]

 Appreciate your response. Thank you.

I will get this confirmed from customer too by checking on the physical device directly.