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Featured on Meta. Now live: A fully responsive profile. Related 9. The default interval is 10 seconds. Starting with Junos OS Release The minimum threshold parameter should be 3, when the DPD interval parameter is set less than 10 seconds. The threshold parameter specifies the maximum number of times to send the R-U-THERE message without a response from the peer before considering the peer dead. The default number of transmissions is five times, with a permissible range of 1 to 5 retries.
When DPD is configured, the establish tunnels immediately option must also be configured at the same time to tear down the st0 interface when there are no phase 1 and phase 2 SAs available.
More than one Phase 1 or Phase 2 SA can exist with the same peer because of simultaneous negotiations. When there is a network problem related to a VPN, after the tunnel comes up only the tunnel status is tracked. Many issues can occur before the tunnel comes up. Hence, instead of tracking only the tunnel status, tunnel down issues, or negotiation failures, successful events such as successful IPsec SA negotiations, IPsec rekey, and IKE SA rekeys are now tracked.
These events are called tunnel events. When a tunnel event occurs multiple times, only one entry is maintained with the updated time and the number of times that event occurred. Overall, 16 events are tracked: eight events for Phase 1 and eight events for Phase 2.
Some events can reoccur and fill up the event memory, resulting in important events being removed. To avoid overwriting, an event is not stored unless a tunnel is down. AutoVPN tunnels are created and removed dynamically and consequently tunnel events corresponding to these tunnels are short lived. Sometimes these tunnel events cannot be associated with any tunnel so system logging is used for debugging instead. I can't imagine asking Solarwinds to monitor tunnels is a difficult thing but it sure seems to be.
Any ideas? Also, i believe if a tunnel disconnects and reconnects the index changes from an SNMP table perspective. It does change the index that is why it is so difficult to find a monitoring solution that knows how to keep track of these IPSec site to site tunnels.
The csm. When setting up configuration file collection from routers, be sure that all the routers have the same prompts as in the csm. The default values match the default values on Cisco routers. They are as follows:. If you use nonstandard router prompts in the csm. If DNS is not properly configured on the routers, collections fail due to a time-out.
Otherwise, name resolution is handled by the routers. To disable DNS, it is important to enter the following command on all routers:. Check the output of the show snmp command to see whether the following statement is present: " SNMP agent not enabled. Router configure terminal. Router config snmp-server community userstring RO. Router config snmp-server community userstring RW.
Router copy running startup. SNMPv3 provides secure access to devices by a combination of authenticating and encrypting packets over the network. This section describes how to set the SNMPv3 parameters on the routers in the service provider network. Also, using the SNMP set command, packets that change a router's configuration can be encrypted to prevent its contents from being exposed on the network.
SNMPv3 provides for both security models and security levels. A security model is an authentication strategy that is set up for a user and the group in which the user resides.
A security level is the permitted level of security within a security model. A combination of a security model and a security level determines which security mechanism is employed when handling an SNMP packet. Table identifies the combinations of security models and levels. To set the SNMPv3 server group and server users parameters on a router, execute the following steps:. Each group belongs to a specific security level.
The snmp-server user command configures a new user to an SNMP group. This wizard sets up a scheduled task that collects Cisco router configuration files directly from the selected routers. It also allows you to import Cisco router configuration files from a directory.
Step 2 In this dialog box, select one of the following ways of updating configuration file information:. This task performs a Telnet operation to the routers to collect the running configuration of each router.
To update router configuration files by collecting the information from existing targets, follow these steps:. Step 2 Click the Selection drop-down menu to choose a specific network. As shown in Figure , all the router names in this network appear in the upper pane. If you want to sort the information, click on the column header for which you want to sort. Select the routers from the upper pane that you want to collect router configuration data from, then click Add.
You can also select all the routers listed by clicking Add All. Note You can remove one or more of the routers selected in the bottom pane by selecting specific routers and clicking Remove or Remove All.
When the lower pane includes all the devices from which router configuration data is to be collected, click Next. Step 3 In the next dialog box, you can choose the Mask passwords in collected files option. This allows you to place a group of x marks in the router's password field to mask the actual characters that are typed in the field.
Click Next. Step 4 In the next dialog box, provide a unique task name, then click Next. Step 5 In the next dialog box, you can schedule the task by selecting the Yes radio button and clicking Next.
Step 6 If you chose to schedule the task, in the next dialog box choose the frequency with which you want to schedule the auditing: Once , Hourly , Daily , Weekly , Monthly , or Yearly. Step 7 In this next dialog box, click Next to save the auditing collection task. If you chose to schedule the auditing collection task, that will also occur when you click Next.
Step 8 Click Close to close the wizard. You can update configuration information by importing Cisco configuration files from a specified directory where the configuration files reside.
Tips If your fully qualified device target name includes a domain name, then the configuration filenames must include the domain name as specified here. To update router configuration information by importing the configurations from files, follow these steps:. Note All files in the directory must be configuration files. Each filename must be the same as the name of the router to be imported, including the use of a domain name, if it exists.
This task imports the configuration files that exist in a specified directory. Step 3 Enter the name of the directory that has the configuration files that you want to import, then click Next. Step 4 In the next dialog box, select the name of the service provider network, then click Next. Step 5 In the next dialog box, enter a unique task name, then click Next.
Step 6 In the next dialog box, schedule the task by selecting the Yes radio button, then click Next. Step 7 In the next dialog box, click Next to save the auditing collection task. Step 8 To close the wizard, click Close. Router configuration files are usually collected at regular intervals and then examined for changes that affect the way the routers function.
While the routers whose configuration files have changed are the only ones that need to be collected, the normal collection process does not separate the routers whose configuration files have changed from the routers whose configuration files have not.
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