Cisco NCS 6008 System
The topics covered in
this chapter are:
Cisco NCS 6008 Product
Cisco Network Convergence System 6000 Series
The Cisco Network Convergence System (NCS) 6000 Series System
delivers outstanding network agility, packet optical convergence, and a system
scale measured in petabits per second. It also facilitates the build-out of
next-generation core to:
Running the Cisco IOS XR operating system, Cisco's innovative
virtualized operating environment, the Cisco NCS 6000 Series advances the
concept of distributed routing and virtualization. With Cisco Virtualized IOS
XR, the Cisco NCS 6000 Series brings new levels of programmability and
support elastic capacity at the lowest total ownership cost
deliver high-bandwidth mobile, video, and cloud services
enhance application service offerings
increase provisioning speed
optimize network economics
The Cisco NCS 6000 Series System is engineered for environmental
efficiency, with the use of adaptable power consumption. The Cisco NCS 6000
Series System is powered by the Cisco nPower Network Processor Units (NPU).
These technologies aid the Cisco NCS 6000 Series the lowest carbon footprint in
service provider routing.
Cisco Network Convergence System 6008 Router
The Cisco NCS 6008 router, part of the Cisco NCS 6000 Series System,
is the next-generation core router that provides industry-leading 8 Tbps of
full-duplex network bandwidth through eight line cards.
The Cisco NCS 6008 router runs on Cisco IOS XR software, with Linux as
the underlying host operating system. A Kernel-based Virtual Machine (KVM)
hypervisor provides a virtualized environment to independently run system
administration and routing functions on separate virtual machines. This
provision makes the new system versatile and robust, providing immense
flexibility for future expansion without the need for a complete system
A multi-slice architecture of line cards enables the system to be
configured to operate in a mixed operating mode, simultaneously supporting
traffic at 10 Gbps and 100 Gbps on slice-level granularity.
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
The VM topology on the Cisco NCS Series router is shown in this
Figure 1. Virtualized
IOS XR on Cisco NCS Series Router
of Virtualized IOS XR on Cisco NCS Series Router
creates and manages individual VM environments.
On every route
and line card (LC) there are
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 6000 Series router 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 mode
(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 6008 Series router involves these stages:
Bring-up the Cisco NCS 6008 Router—Connect to the router's console and
boot-up the router. After booting is complete, specify the root username and
Perform Preliminary Checks—Perform basic verification of the
router's default setup. 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. Privileges are defined by data rules and command rules that are
applied to users. 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 router.
Perform Disaster Recovery—In the event of a router boot
failure due to image corruption, boot the router using an external bootable USB