Veritas NetBackup™ Flex Scale Administrator's Guide
- Product overview
- Viewing information about the NetBackup Flex Scale cluster environment
- NetBackup Flex Scale infrastructure management
- User management
- Considerations for managing NetBackup Flex Scale users
- Adding users
- Changing user password
- Removing users
- Modifying user roles
- Considerations for configuring AD/LDAP
- Configuring AD server for Universal shares and Instant Access
- Configuring AD/LDAP servers for NetBackup services
- Configuring additional AD/LDAP servers for managing NetBackup services/Universal Shares/Instant Access
- Configuring AD/LDAP servers on clusters deployed with only media servers
- Directory services and certificate management
- Region settings management
- About NetBackup Flex Scale storage
- About Universal Shares
- Cloud bucket support for NetBackup Flex Scale
- Backing up data to Data Domain storage
- Node and disk management
- NetBackup Flex Scale network cabling
- Adding a node to the cluster using the NetBackup Flex Scale web interface
- Adding a node using the REST APIs
- Replacing a node in a cluster
- Starting and stopping nodes
- Rebooting a node
- Adding an excluded node to the cluster
- Replacing a disk
- Adding an excluded disk to the cluster
- Viewing the disk sync status
- Viewing disk details
- Viewing node details
- Switching management console to another cluster node
- License management
- Stopping NetBackup service containers
- Starting NetBackup service containers
- Managing the Fibre Channel ports
- Requirements
- Enabling BOM (Bill of Materials) configuration for Fibre Channel
- Assigning Fibre Channel ports
- Discovering attached devices
- Rescanning Fibre Channel cards
- Cleaning Fibre Channel ports
- Unassigning Fibre Channel ports
- Viewing details about the Fibre Channel ports
- Disabling BOM (Bill of Materials) configuration for Fibre Channel
- Managing hardware vendor packages
- Updating credentials for HPE iLO administrator users
- User management
- NetBackup Flex Scale network management
- About network management
- Modifying DNS settings
- Configuring MTU on public interfaces
- Configuring the console FQDN
- About bonding Ethernet interfaces
- Bonding operations
- Configuring NetBackup Flex Scale in a non-DNS environment
- Data network configurations
- Choosing the correct input method for data network configuration
- Network configuration on plain device (eth5)
- Network configuration on VLAN (eth5)
- Network configuration on bonded interfaces (bond0 on eth5 and eth7)
- VLAN on bond of eth5 and eth7 (bond0)
- Network configuration on management interface (eth1)
- Network configurations for adding a partial data network
- Support for multiple VLAN when disaster recovery is configured
- Configuring static routes on a NetBackup Flex Scale cluster
- NetBackup Flex Scale infrastructure monitoring
- Resiliency in NetBackup Flex Scale
- EMS server configuration
- Site-based disaster recovery in NetBackup Flex Scale
- About site-based disaster recovery in NetBackup Flex Scale
- Configuring disaster recovery using GUI
- Clearing the host cache
- Automated NetBackup SLP management
- DNS key management
- Managing disaster recovery using GUI
- Performing disaster recovery using RESTful APIs
- Active-Active disaster recovery configuration
- NetBackup optimized duplication using Storage Lifecycle Policies
- NetBackup Flex Scale security
- About the security meter
- STIG overview for NetBackup Flex Scale
- FIPS overview for NetBackup Flex Scale
- Managing the login banner
- Changing the password policy
- Support for immutability in NetBackup Flex Scale
- Authenticating users using digital certificates or smart cards
- About system certificates on NetBackup Flex Scale
- Deploying external certificates on NetBackup Flex Scale
- Configuring isolated recovery environment (IRE)
- Configuring multifactor authentication
- About multifactor authentication
- Considerations before configuring multifactor authentication
- Configuring multifactor authentication for your user account
- Disabling multifactor authentication for your user account
- Enforcing multifactor authentication for all users
- Configuring multifactor authentication for your user account when it is enforced in the cluster
- Resetting multifactor authentication for a user
- Single Sign-On (SSO)
- Appendix A. Maintenance procedures for HPE servers
- Replacement procedure for a chassis fan
- Replacement procedure for power supply
- Replacement procedure for a single OS disk
- Replacement procedure for both OS disks on a non- management console node
- Replacement procedure for NVMe disks (SSDs)
- Replacement procedure for RAID controller
- Replacement procedure for an Integrated Lights-Out (iLO) port
- Replacement procedure for quad-port NIC
- Procedure for memory expansion (DIMMs)
- Replacement procedure for memory (DIMMs)
- Replacement procedure for Mellanox port
- Replacement procedure for SFP port
- Replacement procedure for chassis
- Replacement procedure for a hard disk drive
- Replacement procedure for a Fibre Channel card for a cluster node
- Replacement procedure for a Fibre Channel card for a node that is not in a cluster
- Appendix B. Configuring NetBackup optimized duplication
- Appendix C. Disaster recovery terminologies
- Appendix D. Configuring Auto Image Replication
Configuring MTU on public interfaces
The MTU property controls the maximum transmission unit size for an Ethernet frame. The standard maximum transmission unit size for Ethernet is 1500 bytes (without headers). MTU defines the largest data packet that a network-connected device accepts. The network routers check the size of each IP packet that they receive against the MTU of the next router that will receive the packet. If the packet exceeds the MTU of the next router, the first router breaks the payload into two or more packets, each with its own headers.
You can manage the MTU values using both the GUI and RESTful APIs. In a NetBackup Flex Scale appliance, the range of MTU is between 1500 to 9000.The MTU value changes the payload size of the packets which modifies the data transfer rate. If the MTU value is edited, the changes are reflected across the cluster.
To edit the value that has been set for MTU using the NetBackup Flex Scale GUI:
Navigate to or .
Go to the network that you want to modify. Either click on the kebab menu and choose or click button from the subsection of the chosen interface.
In the pop-up, enter the new value and click .
Notification events are raised when the MTU values are modified.
Note:
When you use the GUI to set the MTU value on management NICs, capacity validation of the NIC is not performed because there is no guarantee that all the nodes will have the same direct public switch connections to their management interfaces on a public network. Hence, ensure the MTU value you want to set is actually supported at NIC and switch level on all the nodes. Else, SSH commands between the nodes may start failing intermittently or operations such as add node may hang.
The following RESTful APIs are available to configure and manage MTU values:
GET /api/appliance/v1.0/network/mtu: Fetches the MTU values for all interfaces.
GET /api/appliance/v1.0/network/mtu/{interfaceName}: Fetches the MTU value for the specified interface.
POST /api/appliance/v1.0/network/mtu/{interfaceName}: Modifies the MTU value for the specified interface and sets it to the value mentioned in the payload of the API.