{{indexmenu_n>3}}
======Recommendations for Updating to Beta Version, Configuration, and Log Collection======

1. Update the service to the beta version using the command:<code>yum --enablerepo vasexperts-beta update fastdpi</code>  
If you are using BNG functionality and FastPCRF is located on a separate server, execute the following command on the FastPCRF server to update:<code>yum --enablerepo vasexperts-beta update fastpcrf</code>  
<note tip>The current version — [[dpi:changelog:versions:beta|14.2 BETA2.1]]\\ Release date 16.02. If the new version is not visible, clear the cache: <code>yum clean all</code></note>

2. In the configuration file ''/etc/dpi/fastdpi.conf'', set the following parameter values:<code>
nat_whp_max_viewq=1
nat_dstaddr_cache_size=0
</code>  
<note> ''nat_whp_max_viewq'' - changes the translation view depth \\

''nat_dstaddr_cache_size'' - disables sending postNATport in IPFIX, optional as it affects NAT translation export \\

Optionally, if there is a shortage of connection ports \\  
''nat_whp_lifetime=10'' - sets the short queue time in seconds for NAT translation for TCP SYN, TCP FIN, UDP. This parameter overrides ''lifetime_flow'' only for NAT translations. After this time, the port may be reused, but only when the queue for that port on a specific public IP address is reached. Helps reduce port release time. \\  
''nat_gcache_slice_k100=150'' - changes the port allocation logic, use only if the Private to Public density is low (less than 10:1)
</note>

3. Restart SSG. Note that if FastPCRF is on a separate server, restart the fastpcrf service on the FastPCRF server. Restart will interrupt subscriber traffic processing.\\ Restart SSG in the following order:<code>service fastdpi stop
service fastpcrf restart
service fastdpi start</code>

4. Collect a flow dump using the command:<code>mkdir -p /var/log/dpi/$(date +%Y%m%d) && fdpi_cli dump flow cache > /var/log/dpi/$(date +%Y%m%d)/2_flow.txt</code>

5. Backup fastdpi logs using the command:<code>tar -jcvf /var/log/dpi/BACKUPLOG_$(date +"%Y%m%d").tar.bz2 /var/log/dpi/fastdpi_*.log /var/log/dpi/fastpcrf_*.log</code>

6. Collect statistics for all subscribers with CG-NAT using the command:<code>fdpi_ctrl list all status --service 11 > /var/log/dpi/$(date +%Y%m%d)/all_nat.txt</code>

7. Collect statistics for subscribers with more than 800 TCP sessions:<code>fdpi_ctrl list all status --service 11 | grep -E '^[0-9]' | awk '{for(i=1;i<=NF;i++) if($i ~ /active_sess_tcp=/) {split($i,a,"="); if(a[2]+0 > 800) print}}' > /var/log/dpi/$(date +%Y%m%d)/subscriber_with_T800_nat.txt</code>

8. Collect statistics for subscribers with more than 800 UDP sessions:<code>fdpi_ctrl list all status --service 11 | grep -E '^[0-9]' | awk '{for(i=1;i<=NF;i++) if($i ~ /active_sess_udp=/) {split($i,a,"="); if(a[2]+0 > 800) print}}' > /var/log/dpi/$(date +%Y%m%d)/subscriber_with_U800_nat.txt</code>

9. Record the outputs of the following commands:<code>ll -h /var/lib/dpi/proto*
ll -h /etc/dpi/as*</code>

10. Notify us so we can download the archive with logs and flow dump from the server. You can also download them yourself and send via any convenient file-sharing service.