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Enable Advanced Routing

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- PAN-OS 11.2
- PAN-OS 8.1 (EoL)
- PAN-OS 9.0 (EoL)
- PAN-OS 9.1 (EoL)

Advanced Routing

Logical Router Overview

Enable Advanced Routing

PAN-OS 10.2 supports an Advanced Routing Engine.

Although a supported firewall can have a configuration that uses the legacy routing engine and a configuration that uses the Advanced Routing Engine, only one routing engine is in effect at a time. Each time you change the engine that the firewall will use (you enable or disable Advanced Routing to access the advanced engine or legacy engine, respectively), you must commit the configuration and reboot the firewall for the change to take effect.

Before you switch to the Advanced Routing Engine, make a backup of your current configuration.

Similarly, if you configure Panorama with a template that enables or disables Advanced Routing, after you commit and push the template to devices, you must reboot the devices in the template for the change to take effect.

When configuring Panorama, create device groups and Templates for devices that all use the same Advanced Routing setting (all enabled or all disabled). Panorama won’t push configurations with Advanced Routing enabled to lower-end firewalls that don’t support Advanced Routing. For those firewalls, Panorama will push a legacy configuration if one is present.

The Advanced Routing Engine supports multiple logical routers (known as virtual routers on the legacy routing engine). The number of logical routers supported depends on the firewall model and is the same as the number of virtual routers supported on the legacy routing engine. The Advanced Routing Engine has more convenient menu options and there are many settings that you can easily configure in a profile (authentication, timers, address family, or redistribution profile) that you apply to a BGP peer group or peer, for example. There are also many static route, OSPF, OSPFv3, RIPv2, multicast, and BFD settings on the Advanced Routing Engine.

The Advanced Routing Engine supports RIB filtering, which means you can create a route map to match static routes or routes received from other routing protocols and thus filter which routes are installed in the RIB for the logical router. This function is useful on firewalls with a smaller RIB or FIB capacity; you can still propagate the necessary routing updates without using memory needed elsewhere.

Make a backup of your current configuration before you enable Advanced Routing.
Enable the Advanced Routing Engine.
1. Select DeviceSetupManagement and edit the General Settings.
2. Enable Advanced Routing.
3. Before you click OK, make sure you have made a backup of your configuration for the legacy routing engine.
4. Click OK.
5. (PAN-OS 10.2.0 to 10.2.3) A message about preview mode appears; click Yes to proceed to Commit step.
6. (PAN-OS 10.2.4 and later 10.2 releases) A warning appears:
  
  Select Yes to have the migration script convert each virtual router to a logical router and migrate your configuration to the advanced routing engine. (Select Skip to restart the system with an empty configuration. Select Cancel to cancel the process to enable Advanced Routing.)
7. Click OK to approve the migration.
8. The virtual routers, links to the logical routers, and their color-coded status are listed. Resolve any issues that require user intervention. Select Continue
9. Click Yes to accept the migrated configuration.
10. (PAN-OS 10.2.5 and later 10.2 releases) Click OK.
11. Commit and then select DeviceSetupOperations and Reboot Device. Then log back into the firewall.
  If the migration is not successful, generate the technical support file, log in to Palo Alto Networks Customer Support Portal, and report your issues to get help with your product.
12. (Optional) After successful migration, you can delete all virtual routers using the configuration mode CLI command:
  1. Access the CLI.
  2. Execute the following command to remove all configurations from the legacy routing engine:
```
username@hostname# delete network virtual-router <vr-name>
```
    You can delete virtual routers if you are going to make changes in the logical router configuration, which makes the virtual router configuration obsolete, causing commit failures. Although deleting virtual routers will avoid commit failures, be aware that deleting virtual routers will also permanently remove all configuration from the legacy routing engine and you won't be able to get the configuration back.
  3. Commit the changes to the firewall.
```
username@hostname# commit
```
  When configuring in Panorama, you can select Network > Virtual Routers to delete all virtual routers. Commit the changes and push them to the relevant firewalls before continuing.
Log back into the firewall.
Select Network.
Notice the menu items, which are more industry-standard and more detailed than the single item (Virtual Routers) on the legacy menu. Routing includes Logical Routers and Routing Profiles, which include BGP, BFD, OSPF, OSPFv3, RIPv2, Filters, and Multicast.
Select Interfaces and configure one or more Layer 3 interfaces with a static IP address or Configure an Interface as a DHCP Client.
(Optional) Create an Admin Role Profile to control granular access to logical routers and routing profiles for an Advanced Routing Engine.
1. Select DeviceAdmin Roles and Add an Admin Role Profile by Name.
2. Select Web UI.
3. Enable, Disable, or select Read Only the following options: Network, Routing, Logical Routers, Routing Profiles, BGP, BFD, OSPF, OSPFv3, RIPv2, Filters, and Multicast (default is Enable).
4. Click OK.
5. Assign the role to an administrator. Configure a Firewall Administrator Account.
Commit the changes.
Continue by configuring a logical router.
If you downgrade from PAN-OS 10.2.5 or 10.2.4-h2 to a previous version, you must remove the SD-WAN virtual interface (VIF) from the logical router configurations before attempting a downgrade procedure.

That is, you must select a different interface instead of SD-WAN VIF interface in the following Logical Router configurations:
- Select Logical RouterGeneralInterface and specify a different Interface.
- Select Logical RouterStatic and specify a different Interface.
- Select Logical RouterBGPPeer GroupPeer and specify a different Interface for Local Address.