Field Notices

Note

This field notice is provided as a service to our customers to proactively update them on major issues. This service is provided without any changes in our SLA. The information in this field notice will be updated as we learn more.

Field Notice 0004 (2019/2/6)

New Site2Cloud connections will not pass traffic for Aviatrix Systems running software prior to 4.0.691

Problem: AWS introduced changes in VGW IPSEC VPN recently which broke VPN traffic passing. Existing VPN connections will not be affected. Customers who establishes a new Transit VPC to VGW connections will not pass traffic, even though they may be reported as being “UP”.

Description: Aviatrix Software uses SHA256 to setup IPSEC VPN connections with AWS VGW. Due to changes that made by AWS recently, we discovered during the week of Feb 4th 2019 that new VPN Connections to VGW IPSEC tunnel were not passing traffic. We have submitted a support ticket with AWS technical support team. AWS has recommended that we use SHA1 instead of SHA256 for the Phase 2 part of IPSec configuration. They have acknowledged the issue and are looking to address the problem. Meanwhile, Aviatrix engineering team made updates based on AWS recommendation and has released a new build 4.0.691 to address this issue.

Solution: Customers running into this issue are requested to upgrade their Aviatrix system to 4.0.691 or later using the instructions here. After upgrading, follow these directions:

  • For a new connection to VGW in Transit Network scenario, customers should login to the Controller, go to Transit Network -> Setup and go to Step 8 to disconnect the VGW and reconnect again via Step 3.
  • For a standalone Site2Cloud connection, rebuild the connection through Controller GUI/Site2Cloud and avoid using SHA256 for Phase 2.

Please test your network connections and if you continue to face further issues after going through the above steps, please open a ticket by sending an email to support@aviatrix.com


Field Notice 0003 (2018/12/1)

TGW Orchestrator customers: Incorrect route advertisements from Aviatrix gateway to on-premise networks affecting 4.0 releases prior to 4.0.590 for TGW Hybrid Connection

Problem: If you use Aviatrix TGW Orchestrator and build hybrid connection using Step 4, 5 and 6, Aviatrix Transit gateway always advertises 10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16 to on-prem. This could affect the on-premise networks if the on-prem routers also advertise any of the three routes.

Description: Aviatrix transit gateways use BGP to summarize and propagate the network routes. Due to an unexpected software change, software releases from 4.0.368 to 4.0.589 advertises 10.0.0.0/8, 172.16.0.0/12 and 192.168.0.0/16 routes to on-prem which affects the on-prem network if the on-prem routers also advertise any of the three routes. This issue has been fixed in 4.0.590 and all customers who have deployed TGW are advised to upgrade to 4.0.590 or later, immediately.

Solution: Customers deploying TGW are requested to upgrade to 4.0.590 or later. Please follow the instructions here to perform the software upgrade. After upgrading to 4.0.590 or later, please go to TGW Orchestrator > Plan > Step 7 to detach Aviatrix Transit GW from TGW and re-attach Aviatrix Transit GW to TGW in Step 6.

Note this issue does not affect customers who are not deploying TGW Orchestrator. But if you have plans to deploy, we advise you to upgrade to the latest software.


Field Notice 0002 (2018/10/19)

Route update propagation inconsistency from on-premise networks affecting 3.5 releases prior to 3.5.362 for Transit Network

Problem: BGP Route propagation could fail intermittently from on-premise networks to cloud networks in Transit Network.

Description: Aviatrix controllers and gateways use BGP to summarize and propagate the network routes. Due to an unexpected software change, 3.5 releases prior to 3.5.362 are affected and cannot forward routes in certain scenarios. This issue has been addressed in 3.5.362 and all customers who have deployed Transit Network and are running any 3.5 release prior to 3.5.362 are advised to upgrade to 3.5.362 or later, immediately. Customers who are running software version prior to 3.5 are not impacted by this issue.

Solution: Customers deploying Transit Network are requested to upgrade to 3.5.362 or later, if they are running any 3.5.(<362) release. Please follow the instructions here to perform the software upgrade.

Support: For further information or to open a support ticket, please visit https://www.aviatrix.com/support/.


Field Notice 0001 (2018/10/19)

SSL UserVPN with SAML function might fail with Chrome v70

Problem Remote users connecting via SSL UserVPN functionality authenticated through SAML cannot establish session.

Description Aviatrix controllers and gateways provide SSL UserVPN service with authentication through SAML as described in this doc. Google Chrome v70 has altered the behavior of an element in HTML (they add an extra whitespace). This affects our product’s ability to interface with the SAML id providers and breaks the authentication process, resulting in remoteVPN users not being able to connect to your network. We have notified Google about this issue.

Solution Customers deploying SSL UserVPN with SAML authentication are requested to upgrade to 3.5.362 or later, if they are running 3.3 or later release. Please follow the instructions here to perform the software upgrade. For software version prior to 3.3, please reach out to us at support@aviatrix.com. Another workaround to restore the service to your users is to use Firefox as their default browser.

Support: For further information, or to open a support ticket, please visit https://www.aviatrix.com/support/.


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