Cisco NCS 4016 System Features
The topics covered in
this chapter are:
based Routing and System Administration
On the Cisco NCS
Series router, the routing functions and the System Administration functions
are run on separate virtual machines (VMs) over a Linux host operating system.
The VMs simulate individual physical computing environments over a common
hardware.. Available hardware resources, like processor, memory, hard disk, and
so on, are virtualized and allocated to individual virtual machines by the
of Virtualized IOS XR on Cisco NCS Series Router
creates and manages individual VM environments.
On every route
two VMs; one for system administration (System Admin VM) and one
for managing the routing functions (XR VM).
The two VMs on
each node operate on their respective planes. On each plane, the VMs are
connected to each other using a dedicated VLAN over a high-speed Control
System Admin VMs can
detect each other's presence by auto discovery and thus maintain complete
To access the
XR VM, connect
XR VM console
port on the RP. To access the
System Admin VM, in the
XR VM CLI,
Virtualized IOS XR on the Cisco NCS Series Router
time—Because the System Admin functions are on a dedicated VM, the boot time is
upgrades—Software packages can be independently installed on the
System Admin VM and the
XR VM, resulting
in minimal system downtime.
System Admin VM and the
XR VM are
automatically launched during router boot-up without any user intervention.
They have a default set-up that is ready for use.
redundancy—In spite of their interconnectivity, there is also a level of
isolation between the VMs. Therefore, if a particular VM experiences any
issues, it does not affect the functioning of other VMs.
Cisco NCS 4000 Series
system runs on virtualized Cisco IOS XR software. Therefore, the CLI
commands must be executed on virtual machines, namely the
XR VM and the
System Admin VM. This
table lists the command modes for the VMs.
XR EXEC mode
(XR VM execution
XR VM to display
the operational state of the entire secure domain router (SDR).
XR Config mode
security, routing, and other XR feature configurations on the
System Admin EXEC mode
(System Admin VM execution
System Admin VM to display
and monitor the operational state of the router hardware. The chassis or
individual hardware modules can be reloaded from this mode.
System Admin Config
(System Admin VM
configuration commands on the
System Admin VM to manage
and operate the hardware modules of the entire chassis.
The system setup of the Cisco NCS 4016 Series system involves
Establish Connection to a Node—Connect to the console port and
boot-up the system. After booting is complete, bring-up the node by
establishing a connection to the node using the console port.
Install and Login to Cisco Transport Controller— Setup a computer for Cisco
Transport Controller (CTC) and login to CTC. CTC is used to perform operations,
administration, maintenance and provisioning activities of the system.
Bring-up the Node for Network Connectivity— Configure the node to connect to
Perform Preliminary Checks—Perform basic verification of the
default setup of the system. This ensures that, if any setup issue is detected,
corrective action is taken at an early stage.
Create User Profiles and Assign Privileges—Create users and assign privileges,
as needed. Users are either permitted, or denied, the use of certain commands
based on assigned privileges.
Perform System Upgrade and Install Feature Packages—Upgrade the operating system, if the
default is not the latest version. Also, install relevant packages to deploy
additional features and software patches on the system.
Perform Disaster Recovery—In the event of a system boot
failure due to image corruption, boot the system using an external bootable USB