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MikroTik MTCTCE lab 8 of 8

Capstone: ISP subscriber shaping with plans, PCQ and a voice class

Fernvale's Riverside access point sells two plans, Bronze and Silver, and carries a voice service that must come first. Its download shaping was set up in a hurry and three faults let one customer run unshaped, make Bronze customers share a single rate, and starve voice of its class. Find and fix them, then build the missing upload shaping, and prove every plan with measurements.

Run this lab

It needs Lite: its 5 nodes are set to 5 vCPU and 1,280 MB in total. That fits the free demo too.

In your workspace: Shared, then MikroTik MTCTCE RouterOS v7 guided labs, then 08 - Capstone - ISP subscriber shaping with plans PCQ and a voice class

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Level
Advanced
Time
About 90 minutes
Nodes need
5 vCPU, 1,280 MB
Smallest plan
Lite

The scenario

Fernvale's Riverside access point (AP) sells two plans, and carries a voice service:

PlanDownloadUploadSubscribers
Bronze256k each128k eachSUB1 (192.168.50.11), SUB3 (192.168.50.13)
Silver512k each256k eachSUB2 (192.168.50.12)
Voice128k guaranteed, up to 256k, before anything elseSUB3's calls, marked DSCP 46 by the voice provider

The download side was configured in a hurry: address lists per plan, a mangle mark per plan, and a queue tree down on ether2 with a PCQ leaf per plan and a voice leaf. Upload shaping was never built. Customers complain: the Silver customer is "unbelievably fast", the two Bronze customers slow each other down, and SUB3's calls stutter when SUB3 downloads.

Small rates are used because of the CHR licence (lab 2 explains); the design is the same at real speeds.

DeviceAddress
NET (Internet, voice provider, bandwidth-test server)192.0.2.1/30
APether1 192.0.2.2/30 (backhaul) · ether2 192.168.50.1/24 (subscribers)
SUB1 · SUB2 · SUB3192.168.50.11 · .12 · .13

For every measurement in this lab use:

:local r [/tool bandwidth-test address=192.0.2.1 direction=receive protocol=tcp duration=10s as-value]; :put ("rx=" . (($r->"rx-total-average") / 1000) . "k")

(direction=transmit and tx-total-average for uploads; protocol=udp on SUB3 to send "voice").

What you’ll practise

  • Design per-plan shaping with address lists, mangle marks, an HTB tree and PCQ leaves
  • Troubleshoot a subscriber missing from its plan, a PCQ classifier and the order of mangle rules
  • Give a DSCP-marked voice class priority within the tree
  • Build upload shaping on the uplink interface with the right classifiers
  • Verify each plan's download and upload rate with measurements

The tasks

  1. Measure each complaint
  2. Find and fix the three download faults
  3. Build upload shaping
  4. Prove every plan

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 Capstone - ISP subscriber shaping with plans PCQ and a voice class5 nodes and 1 network, 5 links. Every link is listed as text below the diagram.NETAPSUB1SUB2SUB3Subscribersether1ether2ether1ether1ether1ether1
5 nodes and 1 network, with the interface names each link uses. On a narrow screen, scroll the diagram sideways.
Every link, as text
  • NET ether1 to AP ether1
  • AP ether2 to Subscribers (network)
  • SUB1 ether1 to Subscribers (network)
  • SUB2 ether1 to Subscribers (network)
  • SUB3 ether1 to Subscribers (network)
Nodes in Capstone: ISP subscriber shaping with plans, PCQ and a voice class, with the image each runs and the vCPU and RAM it’s set to
NodeDeviceImage in Add NodeSet to
NETMikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
APMikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
SUB1MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
SUB2MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 MB
SUB3MikroTik RouterOSmikrotik-7.14.21 vCPU, 256 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 MikroTik MTCTCE RouterOS v7 guided labs.

  3. Open 08 - Capstone - ISP subscriber shaping with plans PCQ and a voice class 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.

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