There are limitations in SRE-V regarding tracking real time hardware events such as the failure of a hard drive. The Service Ready Engine Virtualization platform (SRE-V) has VMware ESXI 5.0 built into the platform which provides virtualization, and SRE-V installs onto the Service Ready Engine (SRE) service module . ESXI utilizes a technology called CIM as well as SNMP with some limitations to track hardware events. SRE-V uses a software RAID developed by Promise and the release implemented does not support CIM. In addition, SRE-V does not support SNMP. As a result we do not believe that the user can get notification of hardware events such as a disk failure on the SRE service module. The alternative is to use the Promise CLI to check the raid status. These CLI commands are documented in the SRE-V Installation and Configuration Guide in Chapter 7 titled "Managing RAID", and is located at: . Another alternative is the UCS E-Series server which is the next generation service module released after the SRE. This server plugs into the 29xx and 39xx routers and does support SNMP. More information is available at .

More information regarding ESXI CIM vs SNMP is provided here: .


SRE-V 2.0.1 leverage VMware vSphere Hypervisor 5.0 to provide full virtualization for virtual machines (VM). Customers utilizing previous releases of Cisco SRE-V must upgrade their licenses in order to use the Cisco SRE-V 2.0 software.

As of January 4, 2012, all new orders for Cisco SRE-V licenses will ship with VMware vSphere Hypervisor 5.0 license activation codes or VMware vSphere Hypervisor 5.0 license keys if the licenses are ordered with the Cisco SRE hardware.

License keys issued prior to this date will not work when upgrading to Cisco SRE-V Release 2.0 or later, and must be exchanged for new license keys.

Please email to exchange your Cisco SRE-V Release 1.0, 1.1, or 1.5 license keys for Cisco SRE-V 2.0 license keys.

More product licensing and upgrade information can be found at: SRE-V 2.0.1 Upgrade Bulletin


The recently released Service Ready Engine Virtualization 1.1.1 release adds Raid 0 and Raid 1 support on SM-900 service modules. When installing the SRE-V platform onto the SM-900 service module you may now select from the options of Non-Raid, Raid 0 or Raid 1.

The Non-Raid option allows the system to use both hard drives on the SM-900 to write data, but there is no data protection in case a drive should fail. The Raid 0 option, known as striping, improves performance by dividing data being written to both SM-900 hard drives so that the workload is balanced and therefore more efficient. However, again data is not protected if a hard drive should fail. Only Raid 1 offers data protection via mirroring so that data being written to one drive is mirrored to the other drive meaning that the data written twice, once to drive 1 and again to drive 2. If a hard drive should fail the remaining drive contains the complete data so the data is in effect protected.

Please consult the Installation and Configuration Guide for more information.


Upgrading your IOS image on the Integrated Service Router is a relatively straight forward procedure, but with several steps. After the desired IOS image has been downloaded, there are a few pre-upgrade steps that should be taken before upgrading the IOS image on the router. These steps along with the entire upgrade process have been provided below.

The official IOS upgrade documentation is also available here: Cisco IOS Upgrade Documentation

1. Set up a server on your workstation that supports one of these protocols (ftp, http, scp, tftp) and place the IOS image in the public directory.

2. Log into the router and make sure it can ping the workstation.
Command Example:
[linux-ws]$ telnet
Connected to (
Escape character is '^]'.
User Access Verification
Username: user
Password: <enter your password>
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to, timeout is 2 seconds:
Success rate is 100 percent (5/5)

3. Get into privileged mode by typing 'enable' at the router prompt and entering a password if prompted. Notice that when you are in enable mode that the router prompt changes from '>' to '#'.
Command Example:
Password: <enter the enable password>
4. Check that there is enough space in the flash directory for the IOS image that you are about to copy. If there's not enough space you'll need to delete the old image via 'delete flash0:<filename>'.
Command Example:
2951Router#show flash0
-#- --length-- -----date/time------ path
9 60482156 Mar 16 2011 17:36:58 +00:00 c2951-universalk9-mz.SPA.151-3.T.bin
199827456 bytes available (60661760 bytes used)

5. On the router type 'copy <protocol> flash0:'. Enter data as requested by prompt. The router will load the IOS image.
Command Example:
2951Router#copy ftp flash0:
Address or name of remote host []?
Source filename []? pub/c2951-universalk9-mz.SPA.151-4.M.bin
Destination filename [c2951-universalk9-mz.SPA.151-4.M.bin]? <press the enter key>
Loading pub/c2951-universalk9-mz.SPA.151-4.M.bin !!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
[OK - 62590040/4096 bytes]

62590040 bytes copied in 54.948 secs (1139078 bytes/sec)

6. Check that the IOS image file is loaded by typing command 'show flash0'.
Command Example:
2951Router#show flash0
-#- --length-- -----date/time------ path
6 62590040 Apr 20 2011 00:13:08 +00:00 c2951-universalk9-mz.SPA.151-4.M.bin
9 60482156 Mar 16 2011 17:36:58 +00:00 c2951-universalk9-mz.SPA.151-3.T.bin

137236480 bytes available (123252736 bytes used)

7. Check the running configuration and see if the IOS command 'boot-system flash0:<IOS image>' is present. If it is present you'll need to get into configuration mode to remove this command and add a new one to boot up the new flash file. Save changes via 'copy run start'. Note that if there is only one IOS image in your flash0 directory or the image that you want to be loaded is on top of all of the other images that you do not need the 'boot system flash' command as the system will load that top image automatically.
Command Example:
2951Router#show run | sec boot
boot system flash0:c2951-universalk9-mz.SPA.151-3.T.bin

2951Router#configure terminal
Enter configuration commands, one per line. End with CNTL/Z.
2951Router(config)#no boot system flash0:c2951-universalk9-mz.SPA.151-3.T.bin
2951Router(config)#boot system flash0:c2951-universalk9-mz.SPA.151-4.M.bin
2951Router#copy run start
** Make absolutely certain that the IOS image file referenced by the 'boot system flash0:' command is spelled correctly.
8. Reload the router by typing 'reload' and press the 'enter' key when prompted.
Command Example:
Proceed with reload?
9. After the router has booted up, access it and check that the proper IOS image is loaded.
Command Example:
2951Router#show version | sec image
System image file is "flash0:c2951-universalk9-mz.SPA.151-4.M.bin"
10. The router IOS image has been upgraded.


The release of the new Cisco Borderless Network product Service Ready Engine Virtualization (SRE-V), provides the next generation of virtualization functionality for partners desiring to run server applications on the router. Utilizing VMware ESXi as its built-in engine, SRE-V features support of Windows 2003 and 2008 servers on which virtual machines can be created, monitored and maintained via VMware's vSphere client. With this new feature, packaging and porting applications as previously required by the Application Extension Platform (AXP) are no longer required.

SRE-V platform release 1.0.1 runs on the SM-SRE-700-K9 and SM-SRE-900-K9 service modules that plug into the Integrated Service Router Second Generation (ISR G2) routers. These routers are specificially the 29xx and 39xx routers excluding the 2901 model. The procedure for configuring and setting up applications on the service module is now relatively simple. After configuring the router and installing the SRE-V platform onto the service module, simply log into the built-in ESXi server via VMware's vSphere Client. Once logged in, create the virtual machines, install a supported operating system and finally install the application.

Installation and Configuration documentation is available in this Cisco Developer Network (CDN) technical center at the url . Support questions can be posted in the Technical Questions forum category: or by creating a Service Request via and specifying the Technology as: Application Networking Services and Sub Technology: Computing System Express (UCS-Express) on ISR Service Module.


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