Cisco Systems manual Feature Cisco ASR 1000 Series Cisco CSR 1000V Series

Chapter 1 Cisco CSR 1000V Series Cloud Services Router Overview

Cisco CSR 1000V Series Architecture Differences from Hardware Platforms

Cisco CSR 1000V Series Architecture Differences from Hardware Platforms

Unlike traditional Cisco hardware router platforms, the Cisco CSR 1000V Series is a virtual router that runs independently on an x86 machine. As a result, the Cisco CSR 1000V Series architecture has unique attributes that differentiate it from hardware-based router platforms.

For example, Table 1-5lists a comparison of some key areas where the Cisco CSR 1000V Series differs from the Cisco ASR 1000 series routers.

Table 1-5	Cisco CSR 1000V Series Architecture Differences with Cisco ASR 1000 Series Routers
Feature		Cisco ASR 1000 Series	Cisco CSR 1000V Series
Hard Disk		Supported.	The Cisco CSR 1000V does not include
			a hard disk. The software image is
			stored on bootflash only (8 GB).
Physical resources		Managed by architecture of the	Managed by the hypervisor. Physical
		hardware platform.	resources are shared among VMs.
Console types supported		Physical serial port.	•	VMware soft console
			• Network option (virtual terminal
				server)
			•	Named pipe option
			• Physical serial port on the ESXi or
				KVM host
ROMMON		Supported.	The Cisco CSR 1000V does not include
			ROMMON, but uses GRUB to provide
			similar but more limited functionality.
Break Signal		Supported.	Not supported.
Port numbering		See the Cisco ASR1000	Gigabit Ethernet x ports only.
		documentation.
ISSU		Supports In-Service Software	Not supported.
		Upgrades (ISSU).
Subpackage upgrades		Supports installation of	Subpackages not supported. The
		subpackages for specific SPAs	Cisco CSR 1000V does not support
		and SIP SPAs.	SPAs.
Diagnostic mode		Supported.	Not supported.
Dynamic addition/deletion		Supported.	Supported.1
of ports

1. Requires reload of the VM.

	Cisco CSR 1000V Series Cloud Services Router Software Configuration Guide
1-12	OL-27477-07