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NetBackup™ Deduplication Guide

Last Published: 2024-09-29

Product(s): NetBackup & Alta Data Protection (10.5)

Introducing the NetBackup media server deduplication option
1. About the NetBackup deduplication options
Quick start
1. About client-side deduplication
2. About the media server deduplication (MSDP) node cloud tier
  1. Configuring the MSDP node cloud tier
3. About Auto Image Replication (A.I.R.)
Planning your deployment
1. Planning your MSDP deployment
2. NetBackup naming conventions
3. About MSDP deduplication nodes
4. About the NetBackup deduplication destination
5. About MSDP capacity support and hardware requirements
6. About MSDP storage and connectivity requirements
  1. Fibre Channel and iSCSI comparison for MSDP
7. About NetBackup media server deduplication
8. About NetBackup Client Direct deduplication
  1. About MSDP client deduplication requirements and limitations
9. About MSDP remote office client deduplication
  1. About MSDP remote client data security
  2. About remote client backup scheduling
10. About the NetBackup Deduplication Engine credentials
11. About the network interface for MSDP
12. About MSDP port usage
13. About MSDP optimized synthetic backups
14. About MSDP and SAN Client
15. About MSDP optimized duplication and replication
16. About MSDP performance
  1. How file size may affect the MSDP deduplication rate
17. About MSDP stream handlers
  1. Oracle stream handler
  2. Microsoft SQL Server stream handler
18. MSDP deployment best practices
Provisioning the storage
1. About provisioning the storage for MSDP
2. Do not modify MSDP storage directories and files
3. About volume management for NetBackup MSDP
Licensing deduplication
1. About the MSDP license
2. Licensing NetBackup MSDP
Configuring deduplication
1. Configuring MSDP server-side deduplication
2. Configuring MSDP client-side deduplication
3. About the MSDP Deduplication Multi-Threaded Agent
  1. Configuring the Deduplication Multi-Threaded Agent behavior
  2. MSDP mtstrm.conf file parameters
  3. Configuring deduplication plug-in interaction with the Multi-Threaded Agent
4. About MSDP fingerprinting
  1. About the MSDP fingerprint cache
  2. Configuring the MSDP fingerprint cache behavior
  3. MSDP fingerprint cache behavior options
  4. About seeding the MSDP fingerprint cache for remote client deduplication
  5. Configuring MSDP fingerprint cache seeding on the client
  6. Configuring MSDP fingerprint cache seeding on the storage server
  7. NetBackup seedutil options
  8. About sampling and predictive cache
  9. Rebuilding the sampling cache
5. Enabling 400 TB support for MSDP
  1. Creating the data directories for 400 TB MSDP support
  2. Adding volumes to a 400 TB Media Server Deduplication Pool
6. About MSDP Encryption using NetBackup Key Management Server service
  1. Enabling KMS encryption for a local LSU
  2. Upgrading KMS for MSDP
7. About MSDP Encryption using external KMS server
8. Configuring a storage server for a Media Server Deduplication Pool
  1. MSDP storage path properties
  2. MSDP network interface properties
9. About disk pools for NetBackup deduplication
  1. Configuring a disk pool for deduplication
  2. Media Server Deduplication Pool properties
10. Configuring a Media Server Deduplication Pool storage unit
  1. Media Server Deduplication Pool storage unit properties
  2. MSDP storage unit recommendations
11. Configuring client attributes for MSDP client-side deduplication
  1. Disabling MSDP client-side deduplication for a client
  2. Disable client-side deduplication for all clients in a policy
12. About MSDP compression
13. About MSDP encryption
  1. Configuring encryption for MSDP local storage volume
  2. Configuring encryption for MSDP cloud storage volumes
  3. Configuring MSDP encryption on different platforms
  4. Modes of rolling data conversion
  5. MSDP encryption behavior and compatibilities
14. Configuring optimized synthetic backups for MSDP
15. About a separate network path for MSDP duplication and replication
  1. Configuring a separate network path for MSDP duplication and replication
16. About MSDP optimized duplication within the same domain
  1. About the media servers for MSDP optimized duplication within the same domain
  2. About MSDP push duplication within the same domain
  3. About MSDP pull duplication within the same domain
  4. Configuring MSDP optimized duplication within the same NetBackup domain
  5. Configuring NetBackup optimized duplication or replication behavior
  6. Setting NetBackup configuration options by using the command line
17. About MSDP replication to a different domain
18. Configuring MSDP replication to a different NetBackup domain
  1. About NetBackup Auto Image Replication
  2. About trusted primary servers for Auto Image Replication
  3. About the certificate to use to add a trusted primary server
  4. Add a trusted primary server
  5. Remove a trusted primary server
  6. Enable inter-node authentication for a NetBackup clustered primary server
  7. Configuring NetBackup CA and NetBackup host ID-based certificate for secure communication between the source and the target MSDP storage servers
  8. Configuring external CA for secure communication between the source MSDP storage server and the target MSDP storage server
  9. Configuring a target for MSDP replication to a remote domain
    1. Target options for MSDP replication
    2. Configuring a NetBackup Deduplication Engine user with limited permissions for Auto Image Replication
19. About configuring MSDP optimized duplication and replication bandwidth
20. About performance tuning of optimized duplication and replication for MSDP cloud
21. About storage lifecycle policies
  1. About the storage lifecycle policies required for Auto Image Replication
  2. Creating a storage lifecycle policy
  3. Storage Lifecycle Policy dialog box settings
22. About MSDP backup policy configuration
23. Creating a backup policy
24. Resilient network properties
  1. Resilient connection resource usage
  2. Specify resilient connections for clients
25. Adding an MSDP load balancing server
26. About variable-length deduplication on NetBackup clients
  1. Managing the variable-length deduplication using the cacontrol command-line utility
27. About the MSDP pd.conf configuration file
  1. Editing the MSDP pd.conf file
  2. MSDP pd.conf file parameters
28. About the MSDP contentrouter.cfg file
29. About saving the MSDP storage server configuration
  1. Saving the MSDP storage server configuration
  2. Editing an MSDP storage server configuration file
30. Setting the MSDP storage server configuration
31. About the MSDP host configuration file
32. Deleting an MSDP host configuration file
33. Resetting the MSDP registry
34. About protecting the MSDP catalog
  1. About the MSDP shadow catalog
  2. About the MSDP catalog backup policy
  3. Changing the MSDP shadow catalog path
  4. Changing the MSDP shadow catalog schedule
  5. Changing the number of MSDP catalog shadow copies
  6. Configuring an MSDP catalog backup
  7. MSDP drcontrol options
  8. Updating an MSDP catalog backup policy
35. About MSDP FIPS compliance
36. Configuring the NetBackup client-side deduplication to support multiple interfaces of MSDP
37. About MSDP multi-domain support
38. About MSDP application user support
39. About MSDP mutli-domain VLAN Support
40. About NetBackup WORM storage support for immutable and indelible data
  1. About the NetBackup command line options to configure immutable and indelible data
41. Running MSDP services with the non-root user
  1. Changing the service user after installation or upgrade
42. Running MSDP commands with the non-root user
MSDP volume group (MVG)
1. About the MSDP volume group
  1. The MSDP volume group components
2. Configuring the MSDP volume group
3. MSDP volume group disaster recovery
4. The MSDP server maintenance
5. Limitations of the MSDP volume group
6. About the node failure management
7. MSDP volume group best practices
8. MSDP commands for MVG maintenance
9. Troubleshooting the MVG errors
MSDP cloud support
1. About MSDP cloud support
  1. Operating system requirement for configuration
  2. Limitations
2. Create a Media Server Deduplication Pool storage server in the NetBackup web UI
3. Managing credentials for MSDP-C
4. Creating a cloud storage unit
5. Updating cloud credentials for a cloud LSU
6. Updating encryption configurations for a cloud LSU
7. Deleting a cloud LSU
8. Backup data to cloud by using cloud LSU
9. Duplicate data cloud by using cloud LSU
10. Configuring AIR to use cloud LSU
11. About backward compatibility support
12. About the configuration items in cloud.json, contentrouter.cfg, and spa.cfg
13. Cloud space reclamation
  1. Configuring the container aging
  2. Configuring the cloud compaction
14. About the tool updates for cloud support
15. About the disaster recovery for cloud LSU
  1. Common disaster recovery steps
  2. Disaster recovery for cloud LSU in Flex Scale
  3. Additional steps for Veritas Alta Recovery Vault Azure disaster recovery
16. About Image Sharing using MSDP cloud
  1. Things to consider before you use image sharing to convert VM image to VHD in Azure
  2. Converting the VM image to VHD in Azure
17. About restore from a backup in Microsoft Azure Archive
18. About Veritas Alta Recovery Vault Azure and Amazon
19. Configuring Veritas Alta Recovery Vault Azure and Azure Government
20. Configuring Veritas Alta Recovery Vault Azure and Azure Government using the CLI
21. Configuring Veritas Alta Recovery Vault Amazon and Amazon Government
22. Configuring Veritas Alta Recovery Vault Amazon and Amazon Government using the CLI
23. Migrating from standard authentication to token-based authentication for Recovery Vault
24. About MSDP cloud immutable (WORM) storage support
  1. Creating a cloud immutable storage unit using the web UI
  2. Updating a cloud immutable volume
  3. About immutable object support for AWS S3
  4. About immutable object support for AWS S3 compatible platforms
  5. About immutable storage support for Azure blob storage
  6. About bucket-level immutable storage support for Google Cloud Storage
    1. Creating a Google cloud immutable storage using the Web UI
    2. Managing a Google cloud immutable storage using msdpcldutil tool
  7. About object-level immutable storage support for Google Cloud Storage
    1. Google cloud storage user permissions to create the cloud immutable volume
  8. About using the cloud immutable storage in a cluster environment
  9. Troubleshooting the errors when disk volume creation using web UI fails
  10. Deleting the immutable image with the enterprise mode
  11. Deleting the S3 object permanently
  12. About MSDP cloud admin tool
25. About AWS IAM Role Anywhere support
  1. Prerequisites for AWS IAM Role Anywhere configuration
  2. Configure IAM Role Anywhere in AWS
26. About Azure service principal support
  1. Prerequisites for Azure service principal configuration
  2. Configure Azure service principal
    1. Create a new custom role
    2. Create a new service principal
  3. Configure a disk pool using Azure service principal
27. About instant access for object storage
28. About NetBackup support for AWS Snowball Edge
  1. Interfacing with the device
  2. Using Credentials
  3. Configuring NetBackup for AWS Snowball Edge
    1. Configuring SSL for AWS Snowball Edge
    2. Configuring NetBackup for AWS Snowball Edge with SSL Enabled
  4. Shipping the device
  5. Reconfigure NetBackup to work with S3
    1. Bucket is in a default AWS Region
    2. Bucket is in a non-default AWS Region (or storage already exists in the AWS region)
  6. Configuring NetBackup for AWS Snowball Edge using CLI
  7. Using AWS Snowball Edge for large backup restore
  8. Limitations when AWS Snowball Edge is used
29. Upgrading to NetBackup 10.3 and cluster environment
30. About the cloud direct
  1. Configuring the cloud direct for backup
  2. Configuring the cloud direct for restore
S3 Interface for MSDP
1. About S3 interface for MSDP
2. Prerequisites for MSDP build-your-own (BYO) server
3. Configuring S3 interface for MSDP on MSDP build-your-own (BYO) server
  1. Changing the certificate in S3 server
  2. Changing the ETAG type of the S3 objects
4. Identity and Access Management (IAM) for S3 interface for MSDP
5. S3 Object Lock In Flex WORM
6. S3 APIs for S3 interface for MSDP
7. Creating a protection policy for the MSDP object store
8. Recovering the MSDP object store data from the backup images
9. Disaster recovery in S3 interface for MSDP
  1. Recovering the MSDP S3 IAM configurations from cloud LSU
10. Limitations in S3 interface for MSDP
11. Logging and troubleshooting
12. Best practices
Monitoring deduplication activity
1. Monitoring the MSDP deduplication and compression rates
2. Viewing MSDP job details
  1. MSDP job details
3. About MSDP storage capacity and usage reporting
4. About MSDP container files
5. Viewing storage usage within MSDP container files
6. About monitoring MSDP processes
7. Reporting on Auto Image Replication jobs
8. Checking the image encryption status
Managing deduplication
1. Managing MSDP servers
2. Managing NetBackup Deduplication Engine credentials
3. Managing Media Server Deduplication Pools
4. Analyzing the disc space consumption of the backup images
5. Deleting backup images
6. About MSDP queue processing
7. Processing the MSDP transaction queue manually
8. About MSDP data integrity checking
9. Configuring MSDP data integrity checking behavior
  1. MSDP data integrity checking configuration parameters
10. About managing MSDP storage read performance
11. About MSDP storage rebasing
  1. MSDP server-side rebasing parameters
12. About the MSDP data removal process
13. Resizing the MSDP storage partition
14. How MSDP restores work
15. Configuring MSDP restores directly to a client
16. About restoring files at a remote site
17. About restoring from a backup at a target primary domain
18. Specifying the restore server
19. Enabling extra OS STIG hardening on WORM storage server instance
Recovering MSDP
1. About recovering the MSDP catalog
2. Restoring the MSDP catalog from a shadow copy
3. Recovering from an MSDP storage server disk failure
4. Recovering from an MSDP storage server failure
5. Recovering the MSDP storage server after NetBackup catalog recovery
Replacing MSDP hosts
1. Replacing the MSDP storage server host computer
Uninstalling MSDP
1. About uninstalling MSDP
2. Deactivating MSDP
Deduplication architecture
1. MSDP server components
2. Media server deduplication backup process
3. MSDP client components
4. MSDP client - side deduplication backup process
Configuring and managing universal shares
1. Introduction to universal shares
2. Prerequisites to configure universal shares
  1. Build-your-own (BYO) server prerequisites and hardware requirements to configure universal shares
    1. Managing the deduplication web service user and the user group for MSDP BYO server
  2. Configuring universal share user authentication
3. Managing universal shares
4. Mounting a universal share
5. Creating a protection point for a universal share
6. Restoring data using universal shares
7. Advanced features of universal shares
8. Managing universal share services
9. Troubleshooting issues related to universal shares
Configuring isolated recovery environment (IRE)
1. Requirements
2. Configuring the network isolation
3. Configuring an isolated recovery environment using the web UI
4. Configuring an isolated recovery environment using the command line
5. Replicating the backup images from the IRE domain to the production domain
Using the NetBackup Deduplication Shell
1. About the NetBackup Deduplication Shell
2. Managing users from the deduplication shell
3. Managing VLAN interfaces from the deduplication shell
4. Managing the retention policy on a WORM storage server
5. Managing images with a retention lock on a WORM storage server
6. Auditing WORM retention changes
7. Protecting the NetBackup catalog from the deduplication shell
8. About the external MSDP catalog backup
9. Managing certificates from the deduplication shell
10. Managing FIPS mode from the deduplication shell
11. Encrypting backups from the deduplication shell
12. Tuning the MSDP configuration from the deduplication shell
13. Setting the MSDP log level from the deduplication shell
14. Managing NetBackup services from the deduplication shell
15. Monitoring and troubleshooting NetBackup services from the deduplication shell
16. Managing S3 service from the deduplication shell
17. Multi-person authorization for deduplication shell commands
18. Managing cloud LSU in Flex Scale and Cloud Scale
Troubleshooting
1. About unified logging
  1. About using the vxlogview command to view unified logs
  2. Examples of using vxlogview to view unified logs
2. About legacy logging
  1. Creating NetBackup log file directories for MSDP
3. NetBackup MSDP log files
4. Troubleshooting MSDP configuration issues
5. Troubleshooting MSDP operational issues
6. Viewing MSDP disk errors and events
7. MSDP event codes and messages
8. Unable to obtain the administrator password to use an AWS EC2 instance that has a Windows OS
9. Trouble shooting multi-domain issues
10. Troubleshooting the cloud compaction error messages
Appendix A. Migrating to MSDP storage
1. Migrating from another storage type to MSDP
Appendix B. Migrating from Cloud Catalyst to MSDP direct cloud tiering
1. About migration from Cloud Catalyst to MSDP direct cloud tiering
2. About Cloud Catalyst migration strategies
3. About direct migration from Cloud Catalyst to MSDP direct cloud tiering
4. About postmigration configuration and cleanup
5. About the Cloud Catalyst migration -dryrun option
6. About Cloud Catalyst migration cacontrol options
7. Reverting back to Cloud Catalyst from a successful migration
8. Reverting back to Cloud Catalyst from a failed migration
Appendix C. Encryption Crawler
1. About the Encryption Crawler
2. About the two modes of the Encryption Crawler
3. Managing the Encryption Crawler
4. Advanced options
5. Tuning options
6. Encrypting the data
7. Command usage example outputs
8. Updating the KMS configuration
Index

NetBackup MSDP log files

The NetBackup deduplication components write information to various log files. Some NetBackup commands or processes write messages to their own log files. Other processes use Other processes use Veritas Unified Logging (VxUL) log files. VxUL uses a standardized name and file format for log files. An originator ID (OID) identifies the process that writes the log messages.

See About legacy logging.

See About unified logging.

In VxUL logs, the messages that begin with an sts prefix relate to the interaction with the deduplication plug-in. Most interaction occurs on the NetBackup media servers. To view and manage VxUL log files, you must use NetBackup log commands. For information about how to use and manage logs on NetBackup servers, see the NetBackup Logging Reference Guide. The guide is available through the following URL:

Most interaction occurs on the NetBackup media servers. Therefore, the log files on the media servers that you use for disk operations are of most interest.

Warning:

The higher the log level, the greater the affect on NetBackup performance. Use a log level of 5 (the highest) only when directed to do so by a Veritas representative. A log level of 5 is for troubleshooting only.

Specify the NetBackup log levels in the Logging host properties on the NetBackup primary server. The log levels for some processes specific to certain options are set in configuration files as described in Table: Logs for NetBackup MSDP activity.

Table: Logs for NetBackup MSDP activity describes the log files for each component.

Table: Logs for NetBackup MSDP activity

Component	VxUL OID	Description
Backups and restores	117	The nbjm Job Manager.
Backups and restores	N/A	Messages appear in the log files for the following processes: The bpbrm backup and restore manager. The following is the path to the log files: UNIX: `/usr/openv/netbackup/logs/bpbrm` Windows: `install_path\Veritas\NetBackup\logs\bpbrm` The bpdbm database manager. The following is the path to the log files: UNIX: `/usr/openv/netbackup/logs/bpdbm` Windows: `install_path\Veritas\NetBackup\logs\bpdbm` The bptm tape manager for I/O operations. The following is the path to the log files: UNIX: `/usr/openv/netbackup/logs/bptm` Windows: `install_path\Veritas\NetBackup\logs\bptm`
Catalog shadow copies	N/A	The MSDP catalog shadow copy process writes messages to the following log files and directories: UNIX: /storage_path/log/spad/spad.log /storage_path/log/spad/sched_CatalogBackup.log /storage_path/log/spad/client_name/ Windows: storage_path\log\spad\spad.log storage_path\log\spad\sched_CatalogBackup.log storage_path\log\spad\client_name\
Client deduplication proxy plug-in	N/A	The client deduplication proxy plug-in on the media server runs under bptm, bpstsinfo, and bpbrm processes. Examine the log files for those processes for proxy plug-in activity. The strings proxy or ProxyServer embedded in the log messages identify proxy server activity. They write log files to the following directories: For bptm: UNIX: `/usr/openv/netbackup/logs/bptm` Windows: `install_path\Veritas\NetBackup\logs\bptm` For bpstsinfo: Windows: `/usr/openv/netbackup/logs/admin` UNIX: `/usr/openv/netbackup/logs/bpstsinfo` Windows: `install_path\Veritas\NetBackup\logs\admin` Windows: `install_path\Veritas\NetBackup\logs\stsinfo` For bpbrm: UNIX: `/usr/openv/netbackup/logs/bpbrm` Windows: `install_path\Veritas\NetBackup\logs\bpbrm`
Client deduplication proxy server	N/A	The deduplication proxy server nbostpxy on the client writes messages to files in the following directory, as follows: UNIX: `/usr/openv/netbackup/logs/nbostpxy` Windows: `install_path\Veritas\NetBackup\logs\nbostpxy`.
Deduplication configuration script	N/A	The following is the path name of the log file for the deduplication configuration script: UNIX: storage_path/log/pdde-config.log Windows: storage_path\log\pdde-config.log NetBackup creates this log file during the configuration process. If your configuration succeeded, you do not need to examine the log file. The only reason to look at the log file is if the configuration failed. If the configuration process fails after it creates and populates the storage directory, this log file identifies when the configuration failed.
Deduplication plug-in	N/A	The DEBUGLOG entry and the LOGLEVEL in the `pd.conf` file determine the log location and level for the deduplication plug-in. The following are the default locations for log files: UNIX: /var/log/puredisk/pdplugin.log Windows: C:\pdplugin.log You can configure the location and name of the log file and the logging level. To do so, edit the DEBUGLOG entry and the LOGLEVEL entry in the `pd.conf` file. See About the MSDP pd.conf configuration file. See Editing the MSDP pd.conf file.
Device configuration and monitoring	111	The nbemm process.
Device configuration and monitoring	178	The Disk Service Manager process that runs in the Enterprise Media Manager (EMM) process.
Device configuration and monitoring	202	The storage server interface process that runs in the Remote Manager and Monitor Service. RMMS runs on media servers.
Device configuration and monitoring	230	The Remote Disk Service Manager interface (RDSM) that runs in the Remote Manager and Monitor Service. RMMS runs on media servers.
drcontrol utility	N/A	You must run the drcontrol utility on the MSDP storage server host. The command requires administrator privileges. The utility creates a log file and displays its pathname in the command output. The utility writes log files to the following directory, depending on the operating system: UNIX: /[storage_path]/log/drcontrol/policy_admin */storage_path/log/drcontrol/dedupe_catalog_DR* Windows: storage_path\log\drcontrol\policy_admin storage_path\log\drcontrol\dedupe_catalog_DR See About protecting the MSDP catalog. See About recovering the MSDP catalog.
Installation	N/A	The NetBackup installation process writes information about the installation of the deduplication components to a log file in the following directory: UNIX: /var/log/puredisk Windows: %ALLUSERSPROFILE%\Symantec\NetBackup\InstallLogs
NetBackup Deduplication Engine	N/A	The NetBackup Deduplication Engine writes several log files, as follows: Log files in the storage_path/log/spoold directory, as follows: The spoold.log file is the main log file The storaged.log file is for queue processing. The storaged_<dsid>.log file is for cloud LSU queue processing. A log file for each connection to the engine is stored in a directory in the storage path spoold directory. The following describes the pathname to a log file for a connection: hostname/application/TaskName/MMDDYY.log For example, the following is an example of a crcontrol connection log pathname on a Linux system: `/storage_path/log/spoold/server.example.com/crcontrol/Control/010112.log` Usually, the only reason to examine these connection log files is if a Veritas support representative asks you to. A VxUL log file for the events and errors that NetBackup receives from polling. The originator ID for the deduplication engine is 364.
NetBackup Deduplication Engine	364	The NetBackup Deduplication Engine that runs on the deduplication storage server.
NetBackup Deduplication Manager	N/A	The log files are in the */storage_path/log/spad* directory, as follows: `spad.log` `sched_QueueProcess.log` `SchedClass.log` A log file for each connection to the manager is stored in a directory in the storage path spad directory. The following describes the pathname to a log file for a connection: hostname/application/TaskName/MMDDYY.log For example, the following is an example of a bpstsinfo connection log pathname on a Linux system: `/storage_path/log/spoold/server.example.com/bpstsinfo/spad/010112.log` Usually, the only reason to examine these connection log files is if a Veritas support representative asks you to. You can set the log level and retention period in the Change Storage Server dialog box Properties tab. See Changing MSDP storage server properties.
Optimized duplication and replication	N/A	For optimized duplication and Auto Image Replication, The following are the log files that provide information: The NetBackup bptm tape manager for I/O operations. The following is the path to the log files: UNIX: `/usr/openv/netbackup/logs/bptm` Windows: `install_path\Veritas\NetBackup\logs\bptm` The following is the path name of MSDP replication log file: `/storage_path/log/spad/replication.log`
Resilient network connections	387	The Remote Network Transport Service (nbrntd) manages resilient network connection sockets. It runs on the primary server, on media servers, and on clients. Use the VxUL originator ID 387 to view information about the socket connections that NetBackup uses. Note: If multiple backup streams run concurrently, the Remote Network Transport Service writes a large amount of information to the log files. In such a scenario, Veritas recommends that you set the logging level for OID 387 to 2 or less. To configure unified logs, see the NetBackup Logging Reference Guide.
Resilient network connections	N/A	The deduplication plug-in logs information about keeping the connection alive. For more information about the deduplication plug-in log file, see "Deduplication plug-in" in this table. The `pd.conf` file FILE_KEEP_ALIVE_INTERVAL parameter controls the connection keep alive interval. See About the MSDP pd.conf configuration file. See Editing the MSDP pd.conf file.