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Cisco CSR 1000V Series Cloud Services Router Software Configuration Guide
OL-27477-07
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 1-5 lists 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
hardware platform.
Managed by the hypervisor. Physical
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
documentation.
Gigabit Ethernet x ports only.
ISSU Supports In-Service Software
Upgrades (ISSU).
Not supported.
Subpackage upgrades Supports installation of
subpackages for specific SPAs
and SIP SPAs.
Subpackages not supported. The
Cisco CSR 1000V does not support
SPAs.
Diagnostic mode Supported. Not supported.
Dynamic addition/deletion
of ports
Supported. Supported.
1
1. Requires reload of the VM.