0x0000363a – Error_Ipsec_Ike_Mm_Limit – Max Number of Established MM SAS to Peer Exceeded

The error code "0x0000363a – Error_Ipsec_Ike_Mm_Limit" means that there are too many connections trying to communicate at once, reaching the limit allowed between two devices.

This can happen if too many people are using the VPN, or if there are problems with the settings. You might notice that your VPN isn't working, it's slow, or you're losing data.

To fix this, try closing some connections, checking the settings, or updating the device's software. To avoid this problem in the future, manage how many connections are open at once and consider using more than one VPN gateway.

Error meaning:

The "Error_Ipsec_Ike_Mm_Limit" means that a computer has too many secure connections open with another computer.

It can't make new connections until some of the old ones are closed or the limit is raised.

Causes:

Potential Reasons for "Error_Ipsec_Ike_Mm_Limit":

1. Too many connections: Trying to connect too many devices at the same time.
2. Network traffic: Lots of data moving through the network can cause problems.
3. Misconfigured settings: Wrong settings on devices can lead to connection issues.
4. IKE parameters: Incorrect Internet Key Exchange settings can cause too many connection attempts.
5. Network latency: Delays in the network can disrupt connections.
6. Packet loss: Missing data packets can cause devices to retry connections, filling up the limits.

Symptoms:

Signs that you might have the "Error_Ipsec_Ike_Mm_Limit" include:

1. Trouble connecting to VPN – sometimes it fails.
2. Delays in starting secure connections.
3. Error messages in system logs saying the limit for connections has been reached.
4. More packets being dropped during VPN use.
5. Increased lag or slow internet while using VPN.
6. Difficulty accessing important resources safely.

It's important to notice these signs so you can fix the problem quickly!

Solutions:

Step 1: Check the limit of IKE MM Security Associations (SAs) on your device.

If it's too low, try to increase it if possible.

Step 2: Look for any old or unused connections.

Close them to free up resources.

Step 3: Make sure your VPN device has the latest firmware.

Update it to get better performance and fixes.

Step 4: Check how many users are connected at the same time.

Try to limit the number of active sessions.

Step 5: If you have multiple VPN gateways, use them to share the traffic.

This will help reduce the load on one device.

Impact:

1. Connection Failures: When too many connections are made, new ones can't be created, causing interruptions in communication.
2. Service Quality Drops: Users may notice slower connections or a poorer experience because the system can't handle more connections.
3. Delays and Outages: People might have to wait longer to connect or may not be able to connect at all.
4. Less Secure Data: If new connections can't be made, important information might not be sent safely, making it easier for bad guys to steal it.
5. More Work for Teams: IT teams have to spend extra time fixing these problems, which takes them away from other important tasks.
6. Lower Productivity: When systems are slow or failing, it can make it harder for everyone to get their work done efficiently.

Relevance:

The Ipsec IKE MM limit is important for secure communications in Windows operating systems like Windows Server 2008, Windows Server 2012, and Windows 10.

This limit affects how many secure connections (called Main Mode Security Associations or MM SAS) can be made at once. If too many connections are tried, it can cause problems and make it hard to send sensitive information safely.

Knowing this limit helps with planning and managing networks, so organizations can avoid issues. IT professionals need to keep an eye on these limits to ensure everything runs smoothly and securely.

Prevention:

To avoid problems with the Ipsec IKE MM limit in the future, follow these steps:

1. Check Active Connections: Regularly look at how many connections (SAs) are currently being used.
2. Adjust Settings: Change the settings for IKE to use resources more efficiently.
3. Increase Limits: If needed, raise the limit on the number of Main Mode SAs if your network needs it.
4. Clean Up Old Sessions: Regularly check for old or unnecessary VPN connections and remove them.
5. Train Staff: Teach your team how to correctly set up and manage IPsec VPNs to keep everything running smoothly.

People Also Ask

What Devices Are Commonly Affected by This Error?

Common devices that can have this error are routers, firewalls, and VPNs. These devices may struggle when they have to manage many secure connections at once, which can cause problems with connecting to the internet or other networks.

How Can I Check the Current MM SAS Count?

To see how many MM Security Associations (SAs) are active, go to the device's command line. You can type commands like "show crypto ipsec sa" or "show vpn-sessiondb" to find the information, based on your device's setup.

Is This Error Specific to Certain Operating Systems?

This error isn't just for certain operating systems. It can happen on any system, but how often it happens can change depending on how each operating system uses IPsec and IKE protocols. This can affect how many Security Associations can be set up.

What Is the Default Limit for MM SAS Connections?

The default limit for MM Security Associations (SAs) is usually 1024 connections. This means that up to 1024 devices can connect at the same time. This limit helps keep everything running smoothly and safely in network communications.

Can This Error Affect Network Performance Temporarily?

Yes, having too many MM Security Associations (SAs) can slow down the network for a little while. When there are too many connections, it might take longer to connect or cause problems, making it harder for everyone to use the network smoothly.