---
title: Charmhub | Deploy Advanced Routing using Charmhub - The Open Operator Collection
description: Deploy the latest version of Advanced Routing on any cloud.
url: https://charmhub.io/advanced-routing/docs/h-migrate-from-the-policy-routing-charm
---

# Advanced Routing

[Llama (LMA) Charmers](https://charmhub.io/publisher/llama-charmers "View all packages from Llama (LMA) Charmers")

* [Llama (LMA) Charmers](https://charmhub.io/publisher/llama-charmers "View all packages from Llama (LMA) Charmers")

Platform:

26.04

24.04

22.04

20.04

18.04

stable b5c9100-dirty

```
juju deploy advanced-routing
```

[Learn to deploy on juju >](https://juju.is/docs/juju/manage-applications)

---

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# Migration steps from the policy-routing charm

## Initial deployment

The following steps assume that an ubuntu unit with a subordinate policy-routing charm
with the following config has been deployed:

```
application: policy-routing
application-config:
  trust:
    default: false
    description: Does this application have access to trusted credentials
    source: default
    type: bool
    value: false
charm: policy-routing
settings:
  cidr:
    description: |
      CIDR of the network interface to setup a policy routing.
      e.g. 192.168.0.0/24
    source: user
    type: string
    value: 10.10.51.0/24
  gateway:
    description: |
      The gateway to be used from the network interface specified with
      the CIDR. e.g. 192.168.0.254
    source: user
    type: string
    value: 10.10.51.1
```

juju status looks like:

```
$ juju status
Model        Controller  Cloud/Region         Version  SLA          Timestamp
model1  lxd         localhost/localhost  2.7.2    unsupported  11:52:19Z

App                       Version     Status   Scale  Charm                     Store       Rev  OS      Notes
policy-routing                        waiting      0  policy-routing            jujucharms    3  ubuntu
ubuntu                    18.04       active       1  ubuntu                    jujucharms   15  ubuntu

Unit                   Workload  Agent      Machine  Public address  Ports               Message
ubuntu/0*              active    idle       127      10.0.8.155                          ready
  policy-routing/0*    active    idle                10.0.8.155                          Unit ready
```

## Deploy advanced-routing charm

* `juju deploy advanced-routing`
* `juju add-relation ubuntu advanced-routing`

Advanced-routing is in status blocked with message: “Please disable charm-policy-routing”

Apply the following config:

```
$ cat ./advanced_routing_config
advanced-routing:
  enable-advanced-routing: true
  advanced-routing-config: |
      [ {
          "type": "table",
          "table": "SF1"
      }, {
          "type": "route",
          "default_route": true,
          "gateway": "10.10.51.1",
          "table": "SF1"
      }, {
          "type": "rule",
          "from-net": "10.10.51.0/24",
          "to-net": "10.10.51.0/24",
          "priority": 100
      }, {
          "type": "rule",
          "from-net": "10.10.51.0/24",
          "table": "SF1",
          "priority": 101
      } ]
```

with the command:

```
juju config advanced-routing --file ./advanced_routing_config
```

## Disable the old config

```
juju run -u ubuntu/0 "sudo systemctl stop charm-pre-install-policy-routing ; sudo systemctl disable charm-pre-install-policy-routing ; sudo rm -f /etc/systemd/system/charm-pre-install-policy-routing.service; "
```

## Apply the routing configuration with the new charm

Using the action apply-changes, add the routes using the advance-routing charm

```
juju run-action advanced-routing/0 apply-changes --wait
```

---