SG meaning in software version

[csmv]

I want to upgrade a 4506-E installed software is 151-2.SG3, cisco suggested version is 15.2(2)E8. 

There is also a newer version ending with SG, 15.1.2-SG8, what's the meaning of SG? Which version i should upgrade to?

Thanks a lot!

Pat

[Leo Laohoo]

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@csmv wrote:

I want to upgrade a 4506-E

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Post the complete output to the command "sh module". 

NOTE:  Please avoid posting screenshots.

[csmv]

Hi Leo,

Thanks for reply, here is the output:

Chassis Type : WS-C4506-E

Power consumed by backplane : 0 Watts

Mod Ports Card Type Model Serial No.
---+-----+--------------------------------------+------------------+-----------
1 6 Sup 6-E 10GE (X2), 1000BaseX (SFP) WS-X45-SUP6-E JAE15300I2S
2 6 1000BaseX (GBIC) WS-X4306-GB JAE155009BM
3 6 1000BaseX (GBIC) WS-X4306-GB JAE155009BN
4 6 1000BaseX (GBIC) WS-X4306-GB JAE1551007X
5 6 1000BaseX (GBIC) WS-X4306-GB JAE1551008T
6 48 10/100/1000BaseT Premium POE E Series WS-X4648-RJ45V+E JAE15430AR9

M MAC addresses Hw Fw Sw Status
--+--------------------------------+---+------------+----------------+---------
1 0007.7d4d.7640 to 0007.7d4d.7645 1.1 12.2(44r)SG1 15.1(2)SG3 Ok
2 68ef.bdcd.ec64 to 68ef.bdcd.ec69 4.4 Ok
3 68ef.bdcd.ebfe to 68ef.bdcd.ec03 4.4 Ok
4 68ef.bdcd.ebc2 to 68ef.bdcd.ebc7 4.4 Ok
5 68ef.bdcd.ec28 to 68ef.bdcd.ec2d 4.4 Ok
6 7081.057d.8320 to 7081.057d.834f 2.0 Ok

[Leo Laohoo]

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@csmv wrote:

12.2(44r)SG1

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12.2(44r)SG1 is the ROMMON version.

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@csmv wrote:

15.1(2)SG3

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Currently the supervisor card is on IOS version 15.1(2)SG3.  

Read the Release Notes very carefully.  Pay close attention to the following: 

Upgrading the System Software

In most cases, upgrading the switch to a newer release of Cisco IOS software does not require a ROMMON upgrade. However, if you are running an early release of Cisco IOS software and plan to upgrade, refer to the following tables for the minimum Cisco IOS image and the recommended ROMMON release, respectively.

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