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JNCIP-ENT lab 11 of 19

CoS classification policing and rewrite

Classify real flows at the edge with a filter, mark them with rewrite rules, hold them to a contract with soft and hard policers, and trust those marks in the core with a BA classifier, reading the proof at the receiver.

Run this lab

It needs Standard: its 4 nodes are set to 10 vCPU and 12,288 MB in total.

In your workspace: Shared, then JNCIP-ENT JN0-650 guided labs, then 11 - CoS classification policing and rewrite

Run it on Standard from £5 a day

The free demo can’t run it: it has 6 vCPU and 8 GB, and this lab’s nodes need 10 vCPU and 12,288 MB together. Every lab plan includes every guided lab.

Level
Advanced
Time
About 80 minutes
Nodes need
10 vCPU, 12,288 MB
Smallest plan
Standard

The scenario

Northmere's depots share a WAN link with voice, stock data and everything else, and when it's busy calls break up. Class of service starts at the edge: decide what each packet is, mark it so that the rest of the network can tell, and hold each class to its contract. You'll do all of that here on a real path from H1 to H2, and prove each step by reading the marks that arrive at H2.

DeviceInterfaceAddress
R1ge-0/0/0, ge-0/0/1, lo010.0.12.1/30, 10.1.1.1/24, 10.255.0.1/32
R2ge-0/0/0, ge-0/0/1, lo010.0.12.2/30, 10.2.2.1/24, 10.255.0.2/32
H1, H2eth010.1.1.10/24, 10.2.2.10/24
Flow from H1 to H2UDP port
Voice5060
Stock data9000
Everything else7000

What you’ll practise

  • Explain the order of CoS processing
  • Configure an MF classifier
  • Configure rewrite rules
  • Use soft and hard policers
  • Configure a BA classifier

The tasks

  1. Read the defaults
  2. Classify at the edge with a firewall filter
  3. Rewrite the marking
  4. Police the stock data softly
  5. Police everything else hard
  6. Trust the mark with a BA classifier

The Lab Tasks pane has the scenario, these tasks, the checks to run, hints and the full solution.

Topology and devices

The network as it opens in EVE-NG, drawn from the lab’s own canvas, and the image each node runs.

Topology of CoS classification policing and rewrite4 nodes, 3 links. Every link is listed as text below the diagram.R1R2H1H2ge-0/0/1eth0ge-0/0/1eth0ge-0/0/0ge-0/0/0
4 nodes, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • R1 ge-0/0/0 to R2 ge-0/0/0
  • R1 ge-0/0/1 to H1 eth0
  • R2 ge-0/0/1 to H2 eth0
Nodes in CoS classification policing and rewrite, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
R1Juniper vJunos-routervjunosrouter-24.2R1-S2.54 vCPU, 5,120 MB
R2Juniper vJunos-routervjunosrouter-24.2R1-S2.54 vCPU, 5,120 MB
H1EVE-NG GUI server (Docker)eve-gui-server:latest1 vCPU, 1,024 MB
H2EVE-NG GUI server (Docker)eve-gui-server:latest1 vCPU, 1,024 MB

How to open this lab

  1. Sign in to your workspace at lab.cloudlabbox.com.

  2. In File Manager, open Shared, then the folder JNCIP-ENT JN0-650 guided labs.

  3. Open 11 - CoS classification policing and rewrite and start its nodes, then open Lab Tasks for the scenario and the steps.

The lab is read-only. You can start the nodes and configure the devices, but changes to the topology can’t be saved. To change it, rebuild it in your own folder.

More JNCIP-ENT labs

All JNCIP-ENT labs

Related labs in other courses

CloudLabBox is independent of Cisco and Juniper Networks. The lab follows exam topics and isn’t vendor training material; vendor names identify the exams and the images in the workspace.