# RAD process unexpectedly exits when a cluster failover or a Security Gateway reboot occurs

**Product**: Anti-Bot, Anti-Virus, Application Control, URL Filtering  
**Version**: R80.40 (EOS), R81 (EOS), R81.10 (EOS), R81.20, R82, R82.10  
**OS**: Gaia  
**Last Modified**: 2026-07-23

## Symptoms

- When a cluster failover or a Security Gateway reboot occurs, the `RAD` process unexpectedly exits and creates a core dump file in the `/var/log/dump/usermode/` directory.

## Cause

On the Security Gateway, in the `$FWDIR/conf/rad_conf.C` file, the value of the parameter "`max_flow`" is greater than the value of the parameter "`queue_max_capacity`".

## Solution

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#### NOTE

This solution has been verified for the specific scenario, described by the combination of Product, Version and Symptoms. It may not work in other scenarios.

## Article Properties

**Access Level**: Advanced  
**Status**: Approved by TAC  
**Date Created**: 2024-03-27  
**Last Modified**: 2026-07-23