Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

 
ON THIS PAGE
 

What Is cJunosEvolved

This topic provides an overview, key features, benefits, and limitations of cJunosEvolved.

Overview

cJunosEvolved is a containerized version of the two Junos OS Evolved single form factor PTX platforms. It can run directly on an x86 server or within a VM running on an x86 server.

Either of the following PTX platforms can be emulated with cJunosEvolved:

  • PTX10001-36MR–Simulates the Express 4 (BT) chipset
  • PTX10002-36QDD–Simulates the Express 5 (BX) chipset
Note:

In this document, wherever there is a difference in behavior between BT and BX platforms cJunosEvolved-BT will refer to PTX10001-36MR and cJunosEvolved-BX will refer to PTX10002-36QDD. Generically, the product family is referred to as cJunosEvolved.

cJunosEvolved is intended only for lab use and not for commercial deployments. Being a containerized virtual product, it does not support the same bandwidth and speed as the physical PTX.

Note:

You do not need feature licenses, and we do not provide any. You can ignore any license check messages if you receive an alert.

Key Features

This topic provides a list of key features that the cJunosEvolved platform supports.

The cJunosEvolved platforms support the following interface scaling:

  • cJunosEvolved-BT supports up to 12 WAN interfaces and 72 channelized interfaces.

  • cJunosEvolved-BX supports up to 36 WAN interfaces and 144 channelized interfaces.

For more information on the PTX platforms that cJunosEvolved is based on, please refer to the platform datasheets:

For details on configuration of these features, refer to Software Documentation.

Benefits and Uses

The benefits and use cases of cJunosEvolved on standard x86 servers are as follows:

  • Reduced capital expenditure (Capex)—cJunosEvolved is available for free to build test labs reducing costs associated with physical routers.
  • Reduced deployment time—You can use cJunosEvolved to build and to test topologies virtually without building expensive physical labs. Virtual labs can be built instantly. As a result, you can reduce costs and delays associated with physical hardware deployment.
  • Eliminate lab hardware—cJunosEvolved helps you eliminate waiting time for lab hardware to arrive after procurement. cJunosEvolved is available for free and can be downloaded instantly.
  • Education and training—Allows you to build labs for learning and education services for your employees.
  • Automate, build and validate—You can validate various data center routing and switching topologies, pre-build configurations examples, and get automation ready.

Limitations

The cJunosEvolved has the following limitations:

Limitations Common to BT and BX Versions

  • cJunosEvolved is intended only for lab use and not for commercial deployment.
  • Fixed form factor: a single Routing Engine and single FPC architecture.
  • The EVO RE and FPC image can be upgraded at run-time, but the data plane simulator can only be upgraded via installing a new container image. The release notes for every release will list the changes for that release and mention if there is a need to upgrade the data plane simulator in the list of fixed defects.
  • The cJunosEvolved does not support in-service software upgrade (ISSU).
  • You cannot attach or detach interfaces while cJunosEvolved is running.
  • Supports a maximum bandwidth of 2 kpps or 3-5 Mbps over all the interfaces.
  • Does not support Single Root I/0 Virtualization (SR-IOV)
  • The BT or BX data simulators, also known as COSIM reliably work up to 2000 pps across 128B-1500B packet length. You do not need a bandwidth license.
  • Routing Engine and PFE Resiliency support
  • Timing and Synchronization
  • QOS features that operate in real time e.g., shaping, policing BFD and other protocols with aggressive (sub-second) timers
  • Fabric chip functionality (not to be confused with network fabrics)
  • Hardware components like temperature, voltage sensors, etc.
  • TPM
  • For cJunosEvolved to function correctly as a Virtual Extensible LAN (VXLAN) Tunnel End Point (VTEP), you must configure tunnel termination using the set forwarding-options tunnel termination command. Otherwise, the traffic in the tunnel drops on the egress VTEP.

cJunosEvolved-BT Limitations and Unsupported Features

The following are the limitations on cJunosEvolved-BT platform:

  • The only channelization factor supported is 8x25G or 4x25G.
  • FPC restart is not supported.

The following features are the unsupported features on cJunosEvolved-BT platform:

  • Storm control
  • Multichassis link aggregation (MC-LAG)
  • VXLAN seamless stitching for Data Center Interconnect (DCI)
  • Virtual Router Redundancy Protocol (VRRP)
  • Q-in-Q tunneling through an Ethernet VPN–Virtual Extensible LAN (EVPN-VXLAN) fabric
  • Layer-2 egress filtering on EVPN-VXLAN-enabled integrated routing and bridging (IRB) interfaces
  • IPv6 underlay and overlay
  • MAC filtering in EVPN-VXLAN fabric using a MAC list

cJunosEvolved-BX Limitations and Unsupported Features

The following are the limitations on cJunosEvolved-BX platform:

  • Only 4x100G channelization is supported

The following features are the unsupported features on cJunosEvolved-BX platform:

  • Port mirroring with policers
  • Firewall policer and Firewall filter flex offset match
  • MACsec IFD support
  • Inline CFM
  • Optics and EM policy