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Need suggestion for IOS of Cisco 3845

Sunil Patil
Level 1
Level 1


I have one Cisco 3845 Router. It has c3845-spservicesk9-mz.123-14.T4.bin IOS. I need to upgarde it with c3845-spservicesk9-mz.124-22.T5.bin because the old has been deffered on Cisco site.

I am facing one problem related to bandwidth shaping. In old IOS i am unable to configure 155 Mbps for Cisco router with 12.3 IOS. please check below

R1#    sh policy-map CTS-PUN-Parent-Out

  Policy Map PUN-Parent-Out

    Class class-default

      Traffic Shaping

         Average Rate Traffic Shaping

         CIR 154400000 (bps) Max. Buffers Limit 1000 (Packets)

      service-policy PUN-Child-Out


R1(config-pmap-c)#shape average ?

  <8000-154400000>  à Supports upto 150MB only

Can any one check that 12.4 IOS can support upto 155 Mbps. or suggest any other IOS.

For your reference i am also attaching Show Version of that box.

R1#sh version

Cisco IOS Software, 3800 Software (C3845-SPSERVICESK9-M), Version 12.3(14)T4, RELEASE SOFTWARE (fc2)

Technical Support:

Copyright (c) 1986-2005 by Cisco Systems, Inc.

Compiled Thu 08-Sep-05 21:49 by kehsiao

ROM: System Bootstrap, Version 12.3(11r)T2, RELEASE SOFTWARE (fc1)

hostname uptime is 6 weeks, 3 days, 18 hours, 57 minutes

System returned to ROM by power-on

System restarted at 16:07:21 IST Sun Dec 25 2011

System image file is "flash:c3845-spservicesk9-mz.123-14.T4.bin"

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 produXXX 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 produXXX may be found at:

If you require further assistance please contact us by sending email to

Cisco 3845 (revision 1.0) with 222208K/39936K bytes of memory.

Processor board ID

2 FastEthernet interfaces

2 Gigabit Ethernet interfaces

4 Serial(sync/async) interfaces

DRAM configuration is 64 bits wide with parity enabled.

479K bytes of NVRAM.

125184K bytes of ATA System CompactFlash (Read/Write)

Configuration register is 0x2102



5 Replies 5

Level 1
Level 1

i have checked this as latest release hopefully it will work for you.

Description:SP SERVICES
Release Date:09/Dec/2011
File Name:c3845-spservicesk9-mz.151-4.M3.bin
Min Memory:DRAM 512 MB Flash 128 MB



Hi Syed,

Thanks for your reply.

I just want one more information from you is c3845-spservicesk9-mz.124-22.T5.bin IOS support bandwidth shaping upto 155 Mbps or I will have to directly go for c3845-spservicesk9-mz.151-4.M3.bin Suggested by you.



Hello Sunil,

I checked the 15.1(4)M and 15.2(2)T images but the shaping rate is the same for all of them:

R1(config-pmap-c)#shape average ?

  <1000-154400000>  Target Bit Rate (bits/sec). (postfix k, m, g optional;

                    decimal point allowed)

If you consider an upgrade, you should take into account that the 12.4(22)T (and the whole 12.4T train) is end of life.

Warm Regards,


HI Rozas,

Thanks for the information.

Can you please tell me which IOS i will prefered for upgradation to recover this problem.



Hello Sunil,

Unfortunately, these are the latest IOS versions so even after upgrading (be that 12.4T or 15.1), the limitation would be the same.

Warm Regards,


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