IPsec re-keying between MX68 and ASA5525 sometimes fails

Apr 17, 2020
Security and SD-WAN


Welcome to Integrity Hotel Partners, your trusted destination for comprehensive information related to business and consumer services in the real estate industry. In this guide, we will explore the process of IPsec re-keying between MX68 and ASA5525 and discuss potential failures, troubleshooting techniques, and effective solutions.

About IPsec Re-keying

IPsec, which stands for Internet Protocol Security, is a widely used network protocol suite that ensures secure communication over a public network like the internet. Re-keying is an integral part of IPsec, which involves generating new cryptographic keys to maintain the security of the communication channel.

Understanding the Re-keying Process

The re-keying process in IPsec involves several crucial steps. Initially, the initiating device (MX68) and responding device (ASA5525) establish a secure communication channel by exchanging security parameters. Once the secure channel is established, the devices periodically re-key to refresh the cryptographic keys and maintain the highest level of security.

Potential Failures in IPsec Re-keying

While IPsec re-keying is designed to ensure smooth and secure communication, there are instances where it may encounter failures. Some potential reasons for re-keying failures between MX68 and ASA5525 include:

  • Network connectivity issues
  • Misconfiguration of IPsec parameters
  • Incompatible security policies
  • Failure to synchronize time settings
  • Hardware or firmware limitations

Troubleshooting Re-keying Failures

Resolving re-keying failures requires a systematic troubleshooting approach. Here are the steps you can follow to troubleshoot IPsec re-keying issues between MX68 and ASA5525:

Step 1: Validate Network Connectivity

Ensure that both the MX68 and ASA5525 devices have uninterrupted network connectivity. Check for any network issues, such as firewall restrictions, routing problems, or connectivity interruptions that may affect the re-keying process.

Step 2: Verify IPsec Configuration

Double-check the IPsec configuration on both devices to ensure that the security parameters, encryption algorithms, and authentication methods match. Any discrepancies in the configuration may lead to re-keying failures.

Step 3: Review Security Policies

Review the security policies implemented on both the MX68 and ASA5525 devices. Ensure that the security policies are compatible and allow the necessary IPsec traffic for successful re-keying.

Step 4: Synchronize Time Settings

IPsec relies on accurate time settings for secure communication. Ensure that the MX68 and ASA5525 devices have synchronized time settings to prevent re-keying failures due to time-related discrepancies.

Step 5: Update Firmware and Hardware

If all other troubleshooting steps fail to resolve the re-keying failures, consider updating the firmware or hardware of the devices. Outdated firmware or hardware limitations can sometimes impact the IPsec re-keying process.

Effective Solutions for IPsec Re-keying

To ensure successful IPsec re-keying between MX68 and ASA5525, follow these effective solutions:

  1. Regularly monitor and maintain network connectivity.
  2. Document and review IPsec configuration periodically to avoid misconfiguration issues.
  3. Implement consistent security policies across both devices.
  4. Utilize reliable time synchronization protocols to keep time settings accurate.
  5. Stay updated with firmware releases and consider hardware upgrades when required.


In conclusion, IPsec re-keying between MX68 and ASA5525 is an essential process for maintaining secure communication. While re-keying failures can occur due to various reasons, following the troubleshooting steps and implementing effective solutions discussed in this guide can help resolve them. For further assistance or expert guidance, trust Integrity Hotel Partners, your reliable source in the real estate industry.

Eric Linden
Great article! It's crucial for network admins to understand potential failures and effective solutions for IPsec re-keying 🚀💡🔒
Nov 10, 2023
Feb Declue
Thanks for the detailed guide. The troubleshooting tips are very helpful.
Nov 6, 2023
Dottia Bilic
I appreciate the comprehensive overview of the IPsec re-keying process. Looking forward to more related content.
Sep 20, 2023
Frank Jansen
The troubleshooting steps provided are clear and concise, making it easy to understand and address IPsec re-keying issues.
Sep 19, 2023
Rich Luders
Hey, exploring any tunnel aggregation or fragmentation settings affecting the IPsec re-keying might reveal potential mismatches leading to failures.
Sep 16, 2023
Denise O'Malley
Investigating any IPsec-specific quality of service (QoS) policies and configurations might unearth network prioritization issues impacting the re-keying process.
Sep 16, 2023
Andy Zhou
Hello! It could be enlightening to scrutinize the Diffie-Hellman group settings and key exchange standards used for the IPsec re-keying process.
Sep 14, 2023
Regan Jones
Hello! Delving into any IPsec-specific system logs or diagnostics tools provided by the MX68 and ASA5525 can reveal detailed information about the re-keying failures.
Sep 7, 2023
Melissa Morris
If possible, conducting a controlled environment test with simulated traffic and re-keying scenarios may help in understanding the failure patterns.
Aug 31, 2023
Kendall Kunz
Hello! Have you considered analyzing any changes in the network topology or routing configurations that could intersect with the IPsec re-keying processes?
Aug 27, 2023
Joann Carlson
Hello! Exploring the feasibility of running debug and trace utilities for the IPsec re-keying process could provide detailed error information.
Aug 21, 2023
Sue Taylor
Hello! Ensuring that any network address translation (NAT) considerations are uniform and consistent across the MX68 and ASA5525 can assist in resolving re-keying failures.
Aug 17, 2023
User User
The guide is a valuable resource for anyone dealing with IPsec re-keying failures. Thanks for the detailed troubleshooting steps.
Aug 6, 2023
Kris Gregersen
Have you checked for any potential network or firewall rules that could be interfering with the re-keying process?
Aug 1, 2023
Angie Elconin
Have you examined the memory and CPU usage on the MX68 and ASA5525 during re-keying attempts? High resource utilization can hinder the process.
Jul 16, 2023
Siggy Zerweckh
Have you tried updating the firmware/software on both the MX68 and ASA5525 to see if it resolves the re-keying failures?
Jul 16, 2023
Andrew Leung
Hey, have you checked if there are any specific IPsec-related limitations or guidelines for the hardware versions of the MX68 and ASA5525?
Jul 8, 2023
Jeff Daniel
Hello! Investigating any intrusion prevention system (IPS) or deep packet inspection (DPI) features influencing the IPsec traffic could aid in diagnosing the failures.
Jun 24, 2023
Eves Apples
The troubleshooting steps provided are truly helpful for those dealing with IPsec re-keying issues. Thanks for sharing.
Jun 21, 2023
Dee Costello
While troubleshooting the re-keying issues, considering the potential impact of hardware acceleration or offloading features on the MX68 and ASA5525 is essential.
May 8, 2023
The troubleshooting steps are well explained and easy to follow. Thanks for sharing.
Apr 24, 2023
Mary Bruns
Thank you for sharing these detailed troubleshooting steps. It's reassuring to have a clear process for addressing IPsec re-keying failures.
Apr 19, 2023
Mike Kennedy
Great overview of potential IPsec re-keying failures and how to troubleshoot them. The tips are very practical and helpful.
Apr 19, 2023
Patricia Sullivan
Ensure high MTU settings for IPsec connections to resolve re-keying issues.
Apr 6, 2023
Tom Bridgewater
Perhaps looking into any recent changes or updates made to the MX68 or ASA5525 configurations could provide insights into the re-keying issues.
Mar 31, 2023
Benjamin Bledsoe
Have you explored the utilization of alternative ports for IPsec communication between the MX68 and ASA5525 to bypass any port-based restrictions causing re-keying failures?
Mar 29, 2023
Alex Subramanyan
The stability and consistency of the internet connection utilized by the MX68 and ASA5525 could also impact the re-keying process. Worth investigating!
Mar 8, 2023
Eduardo Fischer-Torres
Considering the broader network impact, have you reviewed any potential routing anomalies or changes that could affect the IPsec re-keying between the MX68 and ASA5525?
Mar 8, 2023
Sarah Sprague
👏 Great breakdown of potential issues with IPsec re-keying. Looking forward to implementing the troubleshooting steps.
Feb 27, 2023
Patricia Acosta
Hello! Considering the debug and verbose logging options on the MX68 and ASA5525 during re-keying attempts may reveal detailed error causes.
Feb 6, 2023
Kimberly Greene
Have you considered analyzing the IPsec traffic patterns and volumes during the re-keying attempts to detect anomalies or spikes causing failures?
Jan 23, 2023
Steve Boyazis
I recommend checking the network stability and latency between the MX68 and ASA5525, as it can impact the success of re-keying.
Jan 4, 2023
Ravi Saraf
Consider engaging the technical support teams of the MX68 and ASA5525 for further assistance in diagnosing and resolving the re-keying issues.
Dec 24, 2022
Hello! Have you engaged with the vendor support teams for the MX68 and ASA5525 to explore any specific recommendations or patches related to IPsec re-keying issues?
Dec 14, 2022
Scot Moir
Hello! I believe identifying the specific phase of the re-keying process where failures occur can significantly narrow down the troubleshooting scope.
Nov 25, 2022
Adriana Schlarb
Implementing regular health checks and maintenance tasks for the MX68 and ASA5525 can proactively prevent re-keying failures.
Nov 18, 2022
Keith Mincey
The troubleshooting guide provides clarity on addressing IPsec re-keying failures. Thanks for the valuable information.
Nov 6, 2022
Have you considered the influence of any stateful inspection, deep packet inspection, or layer 7 filtering mechanisms on the MX68 or ASA5525 for re-keying failures?
Nov 2, 2022
Daniel Deeney
Hello! Ensuring that the time-sensitive parameters such as re-keying thresholds and retry intervals are well optimized can contribute to the success of IPsec re-keying.
Oct 12, 2022
Magnus Gerbola
Considering the extensive nature of IPsec re-keying, detailed packet captures and protocol analysis might provide crucial insights into the failure modes.
Oct 1, 2022
Tony Stone
Investigating the impact of security group policies and firewall rules on the IPsec re-keying process could offer valuable insights for troubleshooting.
Sep 29, 2022
Margaret Casey
Useful insights into diagnosing and resolving IPsec re-keying issues. Thanks for the helpful guide.
Aug 27, 2022
Michele Dionne
Considering the affected scope, have you cross-verified the IPsec settings with similar setups to identify any variations that could lead to re-keying failures?
Aug 7, 2022
Stephen Crawford
Investigating the use of dynamic routing protocols integrated with the IPsec connections might reveal any route flapping or convergence issues impacting re-keying.
Jul 20, 2022
Chun-Yuan Hou
Hello! Have you reviewed any environmental factors such as temperature or power fluctuations that might affect the operation of the MX68 and ASA5525 during re-keying attempts?
Jul 10, 2022
Rui Lopes
Is there a possibility of conflicting NAT traversal methods or protocols affecting the IPsec re-keying process between the MX68 and ASA5525?
Jul 7, 2022
Sue Myers
Hello! Monitoring the traffic patterns and volume during the re-keying attempts can provide crucial insights into the fluctuation in successful re-keying operations.
Jul 4, 2022
Kegan Schouwenburg
Metrics such as round-trip time (RTT) and jitter could be influential in determining the success of IPsec re-keying between the MX68 and ASA5525.
May 30, 2022
Ashvini Rao
Check if the VPN hardware is creating sites-to-site tunnels to identify the issue.
May 29, 2022
Gary Austin
Ping all VPN devices to ensure there are no packet losses, causing failures in re-keying.
May 27, 2022
Martin Anzaldo
It could be beneficial to verify that the time and date settings on both devices are accurate and synchronized to avoid re-keying discrepancies.
May 26, 2022
Donal McGranaghan
It's great to see such specific troubleshooting information. This will definitely come in handy for many IT professionals.
May 26, 2022
Michael Kuiper
Hey, exploring the use of encapsulation security payload (ESP) or authentication header (AH) protocols for the IPsec re-keying process might reveal compatibility challenges.
May 11, 2022
Breanna Lochowicz
Hi there! Have you explored the possibility of a mismatch in the IKE versions or parameters between the MX68 and ASA5525?
Apr 30, 2022
Thanks for addressing these specific issues with IPsec re-keying. The detailed troubleshooting steps are very useful.
Apr 23, 2022
Diane Abbott
Considering the potential impact of virtual private network (VPN) concentrators or other network devices, it's worth examining their configurations and interactions with the re-keying.
Apr 19, 2022
Brian McDonnell
Have you explored the use of transport mode IPsec instead of tunnel mode to observe how it affects the re-keying process between the MX68 and ASA5525?
Apr 3, 2022
Phyllis Lafauci
Untwist the various layers of the OSI model to identify where the re-keying is failing.
Mar 30, 2022
Hello! Consider analyzing the continuous logs of both devices to identify re-keying patterns.
Mar 17, 2022
Hi there! Have you explored the utilization of different cryptographic algorithms and integrity protocols for the IPsec re-keying process to identify compatibility challenges?
Mar 15, 2022
Joe Losavio
Consider observing the negotiation and exchange of security parameters during the IPsec re-keying to identify any discrepancies.
Mar 6, 2022
Matt Jones
Could there be any compatibility issues between the MX68 and ASA5525 that are causing the re-keying failures?
Feb 3, 2022
Lee Lamp
The troubleshooting steps provided help simplify the process of addressing IPsec re-keying failures.
Jan 7, 2022
Chate Luu
Hello! Have you reviewed any fragmenting or datagram size constraints across the network paths traversed during the IPsec re-keying process?
Jan 1, 2022
Don Fornes
Hello, have you reviewed the event logs and system messages on both the MX68 and ASA5525 to identify any recurring patterns related to re-keying failures?
Dec 28, 2021
Bill Schreffler
Interesting read, I've had similar issues with IPsec re-keying. Looking forward to learning more about troubleshooting.
Dec 14, 2021
Kara Peterson
Hey, have you examined the potential impact of asymmetric data plane paths or packet forwarding mechanisms on the MX68 and ASA5525 for IPsec re-keying?
Dec 6, 2021
George Webb
Is there any specific error message or log that gets generated when the re-keying fails? Understanding the error codes could shed light on the issue.
Dec 1, 2021
Tom Green
Let me clarify! Investigating any inter-site routing protocols and configurations might uncover deviations impacting the IPsec re-keying operations.
Nov 29, 2021
Tim Counihan
Reviewing the transport modes and encapsulation settings being used for the IPsec tunnels might uncover configuration mismatches causing re-keying issues.
Nov 19, 2021
Alana Bryan
Hello! Ensuring that the pre-shared keys or digital certificates used for authentication are consistent and valid on both devices is crucial for successful re-keying.
Nov 19, 2021
Debra Heesch
I appreciate the detailed troubleshooting steps provided. It makes the process of addressing IPsec re-keying failures much more manageable.
Nov 12, 2021
Chris Coalston
What are the re-keying parameters and configurations currently in place? It might be helpful to review and optimize them.
Nov 9, 2021
John Madden
Have you explored the use of load balancing or failover configurations that could potentially interact with IPsec re-keying between the MX68 and ASA5525?
Nov 7, 2021
Rebecca Robinson
Hello! I recommend consulting the documentation and release notes for both devices to identify any known issues or limitations related to IPsec re-keying.
Oct 21, 2021
Ed Elder
Exploring any potential MTU (Maximum Transmission Unit) limitations or configurations that could be impacting the IPsec re-keying process might be worthwhile.
Oct 21, 2021
I've been struggling with IPsec re-keying, and this guide is exactly what I needed. The troubleshooting tips are invaluable.
Oct 10, 2021
Simon Li
Greetings! Checking if the IPsec re-keying port numbers are open and not blocked by any firewall can resolve the issue.
Oct 4, 2021
Greg Shustrick
Hey, have you explored the use of alternative logging and monitoring tools that might uncover additional insights into the IPsec re-keying failures?
Sep 30, 2021
Josue Alvarez
Have you considered a phased approach to reconfiguring the IPsec settings, starting with default values and gradually adjusting parameters to isolate the issue?
Sep 19, 2021
Sarah Deckard
What are the specific failure behaviors observed during the IPsec re-keying process? Detailed descriptions of the failure patterns can aid in troubleshooting.
Sep 18, 2021
Shawn Asmuth
Hey, have you examined the security group tags and policies associated with the IPsec connections for discrepancies or conflicts?
Sep 16, 2021
Implementing thorough monitoring and alerting systems can help in identifying patterns or triggers leading to re-keying failures.
Sep 16, 2021
Wallingford Quarry
An insightful guide to understanding and troubleshooting IPsec re-keying failures. The detailed explanations are appreciated.
Aug 27, 2021
Brady Na
How about turning the devices off and on again? It sometimes magically fix the issues.
Aug 26, 2021
Oryany Odlo
Have you scrutinized the hardware and software versions of the MX68 and ASA5525 for any specific compatibility requirements related to IPsec re-keying?
Aug 8, 2021
Gurpinder Singh
Investigating the specific algorithms used for encryption and integrity checks during the IPsec re-keying could uncover any mismatches leading to failures.
Jul 30, 2021
Asdfa Asdfsdf
Have you considered adjusting the re-key time intervals for the IPsec connections? It may help in reducing re-keying failures.
Jul 22, 2021
Jeff Brown
Ensuring that the cryptographic algorithms and key exchange mechanisms are uniformly configured on both devices is crucial for successful re-keying.
Jul 18, 2021
Francisco Licarraga
I've experienced similar challenges with IPsec re-keying. It's reassuring to see these issues being addressed.
Jul 8, 2021
Tverizovski Konstantin
I recommend exploring any firmware or software updates for the specific IPsec modules or components used by the MX68 and ASA5525, as it can address known issues.
Jul 8, 2021
Barbara Gonzalez
It's important to troubleshoot each phase of the IPsec re-keying process separately to pinpoint the exact cause of the failures.
May 24, 2021
Gerold Vonbank
Could there be any IP address conflicts or overlapping subnets causing disruptions during the IPsec re-keying process?
May 22, 2021
Miguel Mota
Analyzing the packet captures during failed re-keying attempts might provide valuable data for diagnosing the root cause.
May 11, 2021
Tbd Tbd
Hello! Have you considered conducting performance benchmarks to gauge the resilience and stability of IPsec re-keying operations under varying load scenarios?
May 10, 2021
Derek Gaul
This breakdown of potential IPsec re-keying failures is helpful for understanding the underlying issues.
Apr 29, 2021
Brent Holland
Considering the potential for network congestion or burst traffic, have you monitored the bandwidth utilization during IPsec re-keying attempts?
Apr 25, 2021
John Fulginiti
Hey, have you scrutinized the interaction and compatibility of IKEv1 and IKEv2 negotiation on the MX68 and ASA5525 for the IPsec re-keying process?
Apr 24, 2021
Tien Ta
Hello! Checking for any potential non-standard behaviors or deviations in the IPsec implementations of the MX68 and ASA5525 might shed light on the re-keying failures.
Apr 21, 2021
Scott Leisawitz
Is there a possibility of network address translation (NAT) interfering with the source or destination IP addresses used in the IPsec re-keying process?
Mar 29, 2021
Pat McKeough
Hello, is there any chance that intermittent network congestion or packet loss is contributing to the IPsec re-keying failures?
Feb 22, 2021
Jim Hottinger
Could adjusting the lifetime parameters for the IPsec security associations help in maintaining consistent re-keying processes?
Feb 13, 2021
Consider reviewing the security policies and access controls on both devices to ensure they are not conflicting with the re-keying process.
Feb 3, 2021
Chris Kourouniotis
This guide provides a valuable insight into IPsec re-keying failures. Looking forward to more solutions and best practices.
Jan 9, 2021
Scott Sumner
Hello! Reviewing the access control lists (ACLs) on both devices for potential influences on the IPsec re-keying process could help in pinpointing the issue.
Jan 8, 2021
Ray Davila
Are there any site-to-site VPN tunnels or other connections active during the re-keying attempts? They might contribute to the failures.
Dec 5, 2020
Jalen Lubbers
It might be beneficial to perform a peer review or consultation with colleagues experienced in IPsec configurations to gain diverse perspectives on the re-keying issues.
Nov 28, 2020
Liz Glidewell
I'll definitely bookmark this for future reference. The troubleshooting steps are well laid out.
Nov 20, 2020
Gary Neff
Hello! Have you considered the possibility of asymmetric routing paths or dynamic routing protocol interactions contributing to the IPsec re-keying failures?
Nov 17, 2020
Charles Henry
Hello! Investigating the support documentation and community forums for the MX68 and ASA5525 may reveal insights from similar re-keying failure scenarios.
Nov 7, 2020
Jim Kinerson
Hello! Have you investigated the possibility of network address translation (NAT) interference during IPsec re-keying, especially for traffic traversing public networks?
Oct 31, 2020
Mike Carlson
This article provides valuable insights into addressing IPsec re-keying issues. Looking forward to more troubleshooting tips.
Sep 22, 2020
Jeffrey Koekebacker
From my experience, reviewing and optimizing the IPsec security associations (SAs) on both devices has helped in resolving re-keying failures.
Sep 21, 2020
Nelson Costa
It's essential to ensure that the IPsec policies and proposals are aligned between the MX68 and ASA5525 for seamless re-keying.
Aug 26, 2020
Harry Kantrovich
Considering the complexity of IPsec re-keying, have you engaged with professional services or consulting teams specializing in network security to diagnose the failures?
Aug 12, 2020
Chris Latham
Hello! I'm experiencing a similar issue with IPsec re-keying between MX68 and ASA5525. Could you share any successful troubleshooting steps you've taken?
Jul 26, 2020
Pat Becker
Hi techs! Ensure both VPN hardware and software of both devices comply with the FIPS standard to avoid re-key failure.
Jul 9, 2020
Stephen Holmes
Hello, have you explored the use of DPD (Dead Peer Detection) mechanisms to detect and recover from failed IPsec associations during re-keying?
Jul 1, 2020
Elena Anisimova
Hello, investigating the use of hardware offload features for IPsec processing on the MX68 and ASA5525 might provide insights into the re-keying failures.
Jun 29, 2020
Carissa Howell
The troubleshooting process is well-explained and easy to follow. Very helpful guide for addressing IPsec re-keying challenges.
Jun 27, 2020
Bruce Weis
Wink at the devices; a little charm sometimes helps to solve technical issues.
Jun 7, 2020
Tom Doherty
Useful tips for diagnosing IPsec re-keying failures. Will definitely refer back to this.
Jun 2, 2020
Richard Buckingham
Hello! Investigating the phase 1 and phase 2 negotiation logs and parameters could provide insights into the variations causing re-keying failures.
May 30, 2020
Damian Senior
Appreciate the insights into potential IPsec re-keying failures and the troubleshooting steps provided. Very helpful guide.
May 16, 2020
John Donley
Hey, have you evaluated the CPU and memory utilization during peak re-keying periods to identify resource constraints causing the failures?
Apr 30, 2020