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CiberC L3VPN Management Multivendor With Idempotencia and Notify

Project to automatically deploy L3VPN in a multivendor environment, with the ability to send notifications to WebexTeams through a Bot. Plataforms iosxr, ios, huawei_vrp, junos

CiberC L3VPN Notify

Technology stack

Python 3.8+ or higher, Nornir 3.3.0 and Napalm 4.1.0 and WebexTeamsBot.

Status

There is only one version that has been tested and validated in an emulated environment (EVE-NG with a multivendor ISP topology).

Currently, the project has the ability to send notifications to WebexTeams once a registered command has been completed.

Idempotence (Configs)

The idempotence of the system will depend on the 'dry run' manually sent by the user. The user will handle the Napalm system for commits.

Complete

This complete procedure is available for Huawei, Cisco IOS XE, and Junos.

Partial

If we remember, Cisco IOS XR currently does not have a Napalm Commit Confirm process in its system. However, CiberC has created a process to provide partial DIFF support and allow for partial idempotence support with Commit Confirm, based on dry run.

https://napalm.readthedocs.io/en/latest/support/index.html#configuration-support-matrix

Diff (Configs)

Complete

Huawei, Cisco IOS XE, Junos

Partial

Cisco IOS XR

Use Case Description

Service providers who wish to implement L3VPN services in an automated way, with support for multi-vendor environments, can generate a standard model for service deployment using this tool. Additionally, this tool is useful for companies that already have this service and require automated configuration for multiple devices, saving time in implementation and validation. An important process in this platform is the notification system in Webex Teams.

Install

python3 -m pip install ciberc-l3vpn-notify

Manual Steps to install in Ubuntu workstation (automation station)

git clone https://github.com/dev-ciberc/ciberc_l3vpn_notify.git
cd ciberc_l3vpn_notify

python3 -m venv .venv
source .venv/bin/activate

python3 -m pip install -r requirements.txt
bash build.sh

Configuration

Environment Variables

export WEBEX_ACCESS_TOKEN=xxxxxxx
export LIST_USER_NOTIFY=xxxxxxx

WEBEX_ACCESS_TOKEN: Token generated when registering a Bot in WebexTeams Cisco.

LIST_USER_NOTIFY: Each email will be separated by ,

Inventory

For the correct configuration of the inventory, we rely on two Nornir files, specifically hosts.yaml and defaults.yaml, which will be located in the root directory where the CLI program will be executed.

Example of the only variables needed for the L3VPN configuration for each file

defaults.yaml

---
data:
  local_bgp_as: "64512"
  vpn_name: "VPN-A"
  vpn_rd: "64512:65512"
  vpn_rt: "64512:65512"
  neighbor_remote_as: "65512"

hosts.yaml

---
REFLECTOR:
  hostname: 192.168.10.77
  port: 22
  username: user1
  password: passexample1
  platform: ios
  data:
    - 

PE1:
  hostname: 192.168.10.11
  port: 22
  username: user1
  password: passexample1
  platform: iosxr
  data:
    vpn_int_ip: "192.168.10.2"
    vpn_int_mask: "/30"
    interface_connect_CE: "GigabitEthernet0/0/0/0"
    vpn_bpg_ce_neighbor_ip: "192.168.10.1"
    
PE4:
  hostname: 192.168.10.44
  port: 22
  username: user1
  password: passexample1
  platform: ios
  data:
    vpn_int_ip: "192.168.40.2"
    vpn_int_mask: "255.255.255.252"
    interface_connect_CE: "GigabitEthernet2"
    vpn_bpg_ce_neighbor_ip: "192.168.40.1"
    
PE5:
  hostname: 192.168.10.55
  port: 22
  username: user1
  password: passexample1
  platform: junos
  data:
    vpn_int_ip: "192.168.50.2"
    vpn_int_mask: "/30"
    interface_connect_CE: "em1"
    vpn_bpg_ce_neighbor_ip: "192.168.50.1"
    
PE6:
  hostname: 192.168.10.66
  port: 22
  username: user2
  password: passexample2
  platform: huawei_vrp
  data:
    vpn_int_ip: "192.168.60.2"
    vpn_int_mask: "255.255.255.252"
    interface_connect_CE: "Ethernet1/0/2"
    vpn_bpg_ce_neighbor_ip: "192.168.60.1"

Supported platforms

iosxr

ios

huawei_vrp

junos

Examples

Command L3VPN Configure

This command configures L3VPN for one or all devices.

Example for specific devices:

ciberc-l3vpn configure --device=PE1

(.venv) ➜  ciberc_l3vpn_notify git:(main) ✗ ciberc-l3vpn configure --device=PE1
Configuring L3VPN
---- PE1: Diff, =>PARTIAL support<= for IOS-XR ** changed : False -------------- INFO
+   64512:65512
+   64512:65512
+  ipv4 address 192.168.10.2/30
+  no shutdown
+ router bgp 64512
+   address-family vpnv4 unicast
+   vrf VPN-A
+    rd 64512:65512
+    address-family ipv4 unicast
+    !
+    neighbor 192.168.10.1
+      remote-as 65512
+      address-family ipv4 unicast
+       route-policy Policy-PASS in
+       route-policy Policy-PASS out
+       as-override
+       commit
+     !
+    !
+ !

Example for all devices all:

ciberc-l3vpn configure --device=all

Command L3VPN Rollback

ciberc-l3vpn rollback --device=PE1,PE2

(.venv) ➜  ciberc_l3vpn_notify git:(main) ciberc-l3vpn rollback --device=PE1                                         
Configuring L3VPN
2it [00:11,  5.57s/it]

Command L3VPN Reflector

The reflector will show us which devices are being announced and which are not, validating which devices have been configured correctly.

ciberc-l3vpn reflector

Reflector L3VPN
---- REFLECTOR: _report_bgp_neighbors ** changed : False ----------------------- INFO
[ ('1.1.1.1', '4', '64512', '47186', '52292', '1010', '0', '0', '4w4d', '4'),
  ('2.2.2.2', '4', '64512', '47235', '52533', '1010', '0', '0', '4w4d', '0'),
  ('3.3.3.3', '4', '64512', '47177', '52249', '1010', '0', '0', '4w4d', '4'),
  ('4.4.4.4', '4', '64512', '45754', '46067', '1010', '0', '0', '4w0d', '5'),
  ('5.5.5.5', '4', '64512', '86221', '84691', '1010', '0', '0', '3w5d', '4'),
  ('6.6.6.6', '4', '64512', '35473', '34121', '1010', '0', '0', '3w0d', '4')]

Structure

├── ciberc_l3vpn_notify
│   ├── configure.py
│   ├── core.py
│   ├── __init__.py
│   ├── main.py
│   ├── notify.py
│   ├── reflector.py
│   ├── rollback.py
│   └── templates
│       ├── config-templates
│       │   ├── huawei_vrp.j2
│       │   ├── ios.j2
│       │   ├── iosxr.j2
│       │   └── junos.j2
│       └── rollback-templates
│           ├── huawei_vrp.j2
│           ├── ios.j2
│           ├── iosxr.j2
│           └── junos.j2

Usage

To configure these variables, you would need to modify the values in the defaults.yaml and hosts.yaml files.

In defaults.yaml, you can change the values of the following variables:

  • local_bgp_as: This is the local BGP AS number.
  • vpn_name: This is the name of the VPN.
  • vpn_rd: This is the VPN Route Distinguisher.
  • vpn_rt: This is the VPN Route Target.
  • neighbor_remote_as: This is the remote BGP AS number.

In hosts.yaml, you can change the values of the following variables for each host:

  • hostname: This is the IP address or hostname of the device.
  • port: This is the SSH port number.
  • username: This is the SSH username.
  • password: This is the SSH password.
  • platform: This is the platform of the device.
  • vpn_int_ip: This is the IP address of the VPN interface.
  • vpn_int_mask: This is the subnet mask of the VPN interface.
  • interface_connect_CE: This is the interface that connects to the CE device.
  • vpn_bpg_ce_neighbor_ip: This is the IP address of the BGP neighbor on the CE device.

After modifying these variables, you can use the tool to deploy the L3VPN service with the updated configuration.

configuration example

defaults.yaml

data:
  local_bgp_as: "64512"
  vpn_name: "VPN-A"
  vpn_rd: "64512:65512"
  vpn_rt: "64512:65512"
  neighbor_remote_as: "65512"

hosts.yaml

PE8:
  hostname: 192.168.10.88
  port: 22
  username: user2
  password: passexample2
  platform: huawei_vrp
  data:
    vpn_int_ip: "192.168.60.2"
    vpn_int_mask: "255.255.255.252"
    interface_connect_CE: "Ethernet1/0/2"
    vpn_bpg_ce_neighbor_ip: "192.168.60.1"

How to test the software

you can check the configuration in the devices in the generated report.

This command has the ability to view the route reflector, it will display a report of the devices, and will also send a report notification WebexTeams.

ciberc-l3vpn reflector

Route Reflector

Getting help

If you have questions, concerns, bug reports, etc., please create an issue against this repository, or send me an email to: Dev.auto@ciberc.com

Link Video Example

https://www.youtube.com/watch?v=X8RGU7f938M

Topology

View code on GitHub

  • Owner

    ddev-ciberc

  • Contributors

    +2Github contributors

  • Categories

  • Products

    Webex

  • Programming Languages

    Python

  • License

    BSD 3-Clause "New" or "Revised" License
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