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Sonic Basic L2 Mode Test plan.md

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#SONiC Basic L2 Mode Test Plan

Overview

This document outlines the test plan for SONiC as a basic L2 switch. This test plan validates the functionality by running the tests as described in below sections. More details can be found in this document. This must be followed to configure a Sonic device in L2 switch and verify the associated commands before running the below test cases.

Scope

This is limited to Sonic device in basic L2 mode with the minimal functional verification.

Test structure

Setup configuration

L2 configuration on a T0 topology

Configuration scripts

Configuration is created from https://github.com/sonic-net/SONiC/wiki/L2-Switch-mode#3-generate-a-configuration-for-l2-switch-mode. After applying configuration, this also has basic verifications of interfaces and oper status.

The following is an example script to create config file for Mellanox platform

sonic-cfggen -H -p -k $HWSKU --preset l2

We make sure that the config has a mac by providing -H option, and correct ports (based on port_config.ini) by providing HWSKU to -k and -p options. The config contains all the ports set to admin-up and configure as untagged member ports of Vlan 1000.

Test cases

Test case #1

Test objective

Verify basic sanity. This checks if the orchagent and syncd processes are running and the links are up. Triggered before and after each test case

Test description

Run sanity check - https://github.com/sonic-net/sonic-mgmt/blob/master/tests/common/sanity_check.py

Test case #2

Test objective

Verify FDB learning happens on all ports.

Test description

Run fdb test - https://github.com/sonic-net/sonic-mgmt/blob/master/tests/fdb/test_fdb.py

Test case #3

Test objective

Verify Vlan configurations, ARP and PING. The current vlan test (vlantb) has two parts - vlan_configure and vlan_test. vlan_configure cannot be run on basic L2 mode without modification as it takes into account port-channels. Test must also configure an IP address on Vlan interface.

This test covers Vlan, ARP and PING tests.

Test description

Run fdb test - https://github.com/sonic-net/sonic-mgmt/blob/master/tests/vlan/test_vlan.py

Test case #4

Test objective

Verify SNMP. This document can be referred for basic SNMP verification and configuring public community string

The Basic L2 mode test can cover to get

  1. MAC table
  2. Interface table
  3. CPU
  4. PSU

Test description

Run SNMP tests:

# Test Description Expected Result
1. Sanity Pass
2. FDB MAC Learn
3. VLAN PING,ARP succeeds
4. SNMP Walk succeeds
5.