CHAPTER
5-1
Cisco IR829 Integrated Services Router Hardware Installation Guide
5
Guest Operating System (Guest OS) Installation
and Configuration
This chapter details Guest Operating System (Guest OS) installation for the Cisco IR829.
This chapter contains the following sections:
• Guest Operating System Overview, page 5-1
• Prerequisites, page 5-2
• Guidelines and Limitations, page 5-2
• Installation and Upgrade, page 5-2
• Configuring Cisco IOS, page 5-3
• Configuring Guest OS, page 5-6
• Configuring NAT, page 5-8
• Troubleshooting, page 5-9
• Related Documentation, page 5-9
Guest Operating System Overview
The IR829 supports a Hypervisor architecture to support multiple user-specified operating systems
within independent Virtual Machines (VMs). Specific functions include Serial Relay and Network
Address Translation (NAT).
Cisco IOS interacts closely with the platform and underlying Hypervisor. Cisco Guest OS allows you to
run the Linux operating system (if within the memory, disk, and CPU budget) next to Cisco IOS on the
Hypervisor. Cisco Guest OS does not require signing, allowing maximum deployment latitude; however
you must ensure the integrity and proper behavior for any Guest OS that you install.
When you install the IR829 software bundle (image) on the router, the image automatically installs the
supported Guest OS (Cisco IOS and Linux OS) instance(s). You can use the Linux Guest OS running on
a VM on the IR829 to run utility applications.
The following example shows connectivity of Guest OS and Cisco IOS. A virtual interface (see
Configuring Guest OS Interface on Cisco IOS) managed by Cisco IOS provides network connectivity to
Guest OS. Cisco IOS forwards traffic from Guest OS through regular IP forwarding mechanisms.
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