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README_ENG.md

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Split the interface configuration into two parts

Split this interface configuration into two parts:

set interfaces ae0 unit 1001 description "EXAMPLE_1001"
set interfaces ae0 unit 1001 vlan-tags outer 18
set interfaces ae0 unit 1001 vlan-tags inner 10
set interfaces ae0 unit 1001 family inet policer input P-IN-L2
set interfaces ae0 unit 1001 family inet policer output P-OUT-L2
set interfaces ae0 unit 1001 family inet address 60.1.1.1/30

part 1:

set interfaces ae9 unit 1001 description "EXAMPLE_1001"
set interfaces ae9 unit 1001 encapsulation vlan-bridge
set interfaces ae9 unit 1001 vlan-tags outer 18
set interfaces ae9 unit 1001 vlan-tags inner 10
set interfaces ae9 unit 1001 family bridge policer input P-IN-L2
set interfaces ae9 unit 1001 family bridge policer output P-OUT-L2

part 2:

set interfaces irb unit 1001 description "EXAMPLE_1001"
set interfaces irb unit 1001 family inet address 60.1.1.1/30
set interfaces irb unit 1001 mac 00:ff:3c:01:01:01

All parameters must be taken from the initial configuration, except for the MAC address, which is calculated from the IP address. The 00:ff: part is always the same, and the rest of the values are the IP address in hexadecimal.

A picture with a color designation which part goes where:

qa01

The next step is to convert the settings of multiple interfaces

The cfg_data.txt file contains the configuration of several interfaces that need to be converted in the same way as shown above.

Additional feature - mtu string

Some interfaces have a line with the mtu setting:

set interfaces ae0 unit 1001 description "EXAMPLE_1001"
set interfaces ae0 unit 1001 vlan-tags outer 18
set interfaces ae0 unit 1001 vlan-tags inner 10
set interfaces ae0 unit 1001 family inet mtu 1500
set interfaces ae0 unit 1001 family inet policer input P-IN-L2
set interfaces ae0 unit 1001 family inet policer output P-OUT-L2
set interfaces ae0 unit 1001 family inet address 60.1.1.1/30

The mtu line may or may not be present in the configuration. If there is a line, it must be added to the converted version (at the beginning or at the end of the irb section):

set interfaces irb unit 1001 family inet mtu 1500
set interfaces irb unit 1001 description "EXAMPLE_1001"
set interfaces irb unit 1001 family inet address 60.1.1.1/30
set interfaces irb unit 1001 mac 00:ff:3c:01:01:01

Solution

Regular expressions, string formatting, Jinja2 are used.

  • input_cfg_data.txt - is the initial configuration of the interfaces to be converted
  • output_cfg_results.txt - what you need to get in the end
  • solution_1.py - a version of the solution with the compilation of the final template using string formatting
  • solution_2_jinja_template.py - solution with Jinja2 template
  • interface_template.j2 - Jinja2 template for the second solution