All systems are operational
Scheduled Maintenance
[SEWAN] Technical maintenance - 19.11.2025

Beginning: 19.11.2025 – 10.00 PM

Ending: 20.11.2025 – 01.00 AM

 

Impact: Few packet loss and SSL-VPN disconnection while switchover.

 

Dear Customer, Dear Partner,

 

Please be informed that our technical team will perform maintenance on firewall cluster 6.

During the two scheduled nights, you may experience brief packet loss and temporary SSL-VPN disconnections during the switchover.

No action is required on your side.

 

Thank you for your understanding.

 

Best regards;

 

SEWAN Technical Team

[SEWAN] Technical maintenance - 21.11.2025

Beginning: 21.11.2025 – 00.00 AM

Ending: 21.11.2025 – 05.00 AM

Impact: none

 

Dear customer, dear partner,

 

EUROFIBER will perform a maintenance on our NNI at Leuven.

No impact is expected

No intervention is needed from your side.

Best regards;

 

SEWAN Technical Team

[SEWAN] Technical maintenance - 26.11.2025 - 28.11.2025

Beginning: 26.11.2025 – 10.00 PM

Ending: 28.11.2025 – 06.00 AM

Impact: max 1h of interruption

Dear customer, dear partner,

 

Eurofiber will perform a large-scale network software update that will improve the performance and future proofing of our network.

Your connection will be interrupted only one time, for 1 hour during this upgrade. If you have a redundant connection, they will ensure that it is not down at the same time as the primary one.

No intervention is needed from your side.

Best regards;

 

SEWAN Technical Team

Past Incidents

Thursday 4th May 2023

General communicate service [SEWAN] Unexpected disturbances - 04.05.2023 (SOLVED)

INCIDENT REPORT

 

At 1:06 PM on the 4th of May 23, one of our cached internal routing tables got corrupted. These tables are used to decide to which internal platform a number must be routed towards. The event was immediately identified by our monitoring systems, triggering alerts toward our IT team.

This resulted that part of our DIDs* were no longer reachable. The first impact was felt at 1:10 PM.

We instantly took measures to mitigate this issue.

By 1:38 PM, 90% of the impacted services were already going through the alternate table, located into a separate datacenter.

As a corrective action, we replaced the routing tables with a stronger version, and improved the recovery procedure in case of such issue. Not all platforms were impacted*. During the timeframe, the problem became less impacting throughout the resolution.

We are confident our resolution is profound and future-proof.

 

*Our major “V2” VoIP platform was not impacted.


UPDATE - 1.45 PM

 

Service back to normal. Technical investigation on going.

May you have any remaining issue after 1.45 PM today, please contact us : support@sewan.be


UPDATE - 1.38 PM

 

Service back to normal by 90%.


UPDATE - 1.31 PM

 

Restoration in progress. ETA : 1.45 PM


UPDATE - 1.26 PM

 

Redis issue identify. On our way for fixing.

More info will follow.


   

Beginning: 04.05.2023 – 1.10 PM

Ending: 04.05.2023 – 1.45 PM

Impact: inbound fixed telephony impacted

 

Dear customer, dear partner,

 

We are experiencing a problem on our inbound calls.

Outbound calls are not impacted.

Technical team is on it. More info will follow.

 

Best regards;

SEWAN technical team

Wednesday 3rd May 2023

No incidents reported

Tuesday 2nd May 2023

No incidents reported

Monday 1st May 2023

No incidents reported

Sunday 30th April 2023

No incidents reported

Saturday 29th April 2023

No incidents reported

Friday 28th April 2023

No incidents reported

Thursday 27th April 2023

Office 365 [SEWAN] Unexpected disturbances - 28/04/2023 (SOLVED)

Beginning: 27.04.2023 – 2.00 PM Ending: 28.04.2023– 11.40 AM

Impact: license order issue

 

Dear customer, dear partner,

Since yesterday we have difficulties displaying or ordering Microsoft licenses through Sophia. We confirm that there is no impact on existing licenses. Our engineers solved the issue, all is working again.  

Sorry for the inconvenience.

...............................

 

Best regards;

SEWAN technical team

Wednesday 26th April 2023

No incidents reported

Tuesday 25th April 2023

No incidents reported

Monday 24th April 2023

No incidents reported

Sunday 23rd April 2023

No incidents reported

Saturday 22nd April 2023

No incidents reported

Friday 21st April 2023

No incidents reported

Thursday 20th April 2023

No incidents reported