# Dynamic Routing outage in a Security Group during the Zero Downtime (MVC) Upgrade to R81.20 or Downgrade from R81.20

**Product**: Maestro HyperScale Firewall, Scalable Chassis  
**Version**: R81 (EOS), R81.10 (EOS), R81.20  
**OS**: Gaia  
**Last Modified**: 2024-12-13

## Symptoms

- Dynamic Routing outage may occur in a Security Group during the Zero Downtime (MVC) Upgrade to R81.20 or Downgrade from R81.20 - the required dynamic routes are not present in the routing table on the Standby Security Group Member Members during the upgrade / downgrade.

## Cause

Security Group Members in the Active status are not able to synchronize the route information for any Dynamic Routing protocol to Security Group Members of a different version.

This issue occurs in a Security Group in these scenarios:

- Upgrade from R81 to R81.20
- Downgrade from R81.20 to R81
- Upgrade from R81.10 to R81.20
- Downgrade from R81.20 to R81.10
- On R81.20 with the R81.20 Jumbo Hotfix Accumulator - installation of a higher Take of the R81.20 Jumbo Hotfix Accumulator
- On R81.20 with the R81.20 Jumbo Hotfix Accumulator - uninstall of the latest Take of the R81.20 Jumbo Hotfix Accumulator to revert to a lower Take

## Solution

This problem was fixed. The fix is included in:

- [Jumbo Hotfix Accumulator for R81.20](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm) starting from Take 89
- [Jumbo Hotfix Accumulator for R81.10](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.10/Default.htm) starting from Take 170
- [Jumbo Hotfix Accumulator for R81](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81/Default.htm) starting from Take 106

If you choose not to upgrade, the following workaround is available:

Perform the upgrade / downgrade on **all** Security Group Members at the same time.  
This option requires a downtime and does not preserve the current connections.

### Related Documentation

- Upgrade and Downgrade Procedures:

|     |     |     |
| --- | --- | --- |
| Platform | Upgrade to R81.20 | Downgrade from R81.20 |
| Maestro | [Link](https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_Maestro_AdminGuide/Content/Topics-Maestro-AG/Upgrading-Maestro-Zero-Downtime-MVC.htm) | [Link](https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_Maestro_AdminGuide/Content/Topics-Maestro-AG/Rollback-a-Failed-Upgrade-of-Security-Group-Zero-Downtime.htm) |
| Scalable Chassis | [Link](https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_Chassis_AdminGuide/Content/Topics-Chassis-AG/Upgrading-Chassis-Zero-Downtime-MVC.htm) | [Link](https://sc1.checkpoint.com/documents/R81.20/WebAdminGuides/EN/CP_R81.20_Chassis_AdminGuide/Content/Topics-Chassis-AG/Rollback-a-Failed-Upgrade-of-Security-Group-Zero-Downtime.htm) |

- [R81.20 Jumbo Hotfix Accumulator](https://sc1.checkpoint.com/documents/Jumbo_HFA/R81.20/Default.htm)

## Article Properties

**Access Level**: General  
**Status**: Approved  
**Date Created**: 2024-07-31  
**Last Modified**: 2024-12-13