Network Settings

General

Network Setting	Description
Hostname	The hostname to be assigned to the server. Specify the hostname as a fully-qualified domain name (FQDN). For example: myserver.mycompany.com
Default Interface	Select the default Ethernet interface. For new systems, this setting is unset by default.
NTP Server	(Optional). If the Network Time Protocol (NTP) is enabled, enter the IP address of the NTP server.
DNS Servers	(Optional). The Internet Protocol (IP) addresses of the Domain Name Servers to use.
DNS Precedence	Select either IPv4 or IPv6 to specify the priority for DNS resolution. On systems with both IPv6 and IPv4 enabled, if users use hostnames instead of specifying IP addresses when creating connections, the default behavior is to resolve to IPv6 first if it is available.
Search Domains	(Optional). The search strings to use when attempting to resolve domain names.
RP Filter Mode	(Advanced users only) Reverse path filtering mode, as defined in IETF RFC3074 Ingress Filtering for Multihomed Networks . Currently, the recommended practice per RFC3074 is to use strict mode to prevent IP spoofing from DDOS attacks. If you are using asymmetric routing or other complicated multi-NIC routing, the default setting of Strict mode may cause system network outages and DHCP-enabled interfaces may be unable to obtain an IP address. Strict mode: Each incoming packet is tested against the FIB and if the interface is not the best reverse path the packet check fails. By default failed packets are discarded. Loose mode: Each incoming packet's source address is also tested against the FIB and if the source address is not reachable via any interface the packet check fails.
Accept Redirect Messages	By default ICMP redirect messages are disabled to protect from malicious attacks. You may enable them by toggling this to On.
SNMP	Enable/Disable Simple Network Management Protocol (SNMP).
Read-Only Community	SNMP string to be used when making read-only information requests.
SNMP Trap Servers	IPv4 or FQDN of a server and the Community Name to send SNMP traps to.

Interfaces - IPv4

Network Setting	Description
Addressing	Choose whether the interface uses a static or dynamic IP address: None — Select to disable the interface. Static — Select to disable DHCP. When it is disabled, you must manually enter the IP address and subnet mask. DHCP — Select to enable the Dynamic Host Configuration Protocol. When DNCP is enabled, the appliance will receive an IP address from a DHCP server on the network.
IP Address	Displays the IP Address. This is a unique address that identifies the unit in the IP network. If DHCP is disabled, you may enter an IP address in dotted-decimal format.
Subnet Mask	This is a 32-bit subnet mask used to divide an IP address into subnets and specify the network's available hosts. If DHCP is disabled, you may enter the Network Mask in dotted-decimal format (e.g., 255.255.0.0).
Gateway	The IPv4 default route to be assigned to the interface. This is the gateway that is used when no other route matches. This address must be reachable on your local subnet. If DHCP is disabled, you may enter the gateway address in dotted-decimal format.
MTU	(Maximum Transmission Unit) Specifies the maximum allowed size of IP packets for the outgoing data stream.
MAC Address	(Read-only) The Media Access Control address assigned to the interface. This is the physical address of the network interface and cannot be changed.
Link	Select the link negotiation settings for the interface, either Auto or Manual. If you select Manual, you can select the Speed (10, 100 or 1000) and Duplex setting (Full or Half).
Bonding Mode	(Bond Interface only) Modes for the Linux bonding driver determine the way in which traffic sent out of the bonded interface is actually dispersed over the real interfaces. Modes 0, 1, and 2 are by far the most commonly used among them. Round Robin Sequential: Transmits packets in first available network interface (NIC) slave through the last. This mode provides load balancing and fault tolerance. Active Backup: Only one NIC slave in the bond is active at a time. A different slave becomes active only when the active slave fails. This mode provides fault tolerance. XOR Sequential: Transmits based on XOR formula. (Source MAC address is XOR'd with destination MAC address). This mode selects the same NIC slave for each destination MAC address and provides load balancing and fault tolerance. Broadcast – Fault Tolerance: Transmits network packets on all slave interfaces. This mode is least used (only for specific purpose) and provides only fault tolerance. IEEE 802.3ad Dynamic Link Aggregation: Creates aggregation groups that share the same speed and duplex settings. Utilizes all slave network interfaces in the active aggregator group according to the 802.3ad specification. This mode is similar to the XOR mode above and supports the same balancing policies. The link is set up dynamically between two LACP-supporting peers. (Adaptive) Transmit Load Balancing (TLB): The outgoing traffic is distributed according to the current load and queue on each slave interface. Incoming traffic is received by one currently designated slave network interface. If this receiving slave fails, another slave takes over the MAC address of the failed receiving slave. (Adaptive) Active Load Balancing (ALB): This includes balance-tlb + receive load balancing (rlb) for IPV4 traffic. The receive load balancing is achieved by ARP negotiation. The bonding driver intercepts the ARP Replies sent by the server on their way out and overwrites the source hardware address with the unique hardware address of one of the slaves in the bond such that different clients use different hardware addresses for the server.
Slave Interfaces	(Bond Interface only) Select the checkboxes next to the interfaces to enslave it to the bond interface.

Interfaces - IPv6

Note

Currently, SRT streams in Rendezvous mode are not supported with IPv6 addressing.

Setting	Description
Addressing	Select one of the following options to obtain an IPv6 address for the unit: Automatic: Uses SLAAC (Stateless Address Autoconfiguration) to obtain IP addresses automatically without the need for a DHCP server Automatic (DHCP): Enables the Dynamic Host Configuration Protocol to get an IP address from a DHCP server on the network Static: Use to manually configure the device’s IP and gateway addresses.
Global IPv6 Address	If Automatic addressing is used, displays the IPv6 Address (with a `/128` suffix). This is a unique address that identifies the unit in the IP network. If Static addressing is used, enter an IPv6 address in hexadecimal notation.
Global Temporary IPv6 Address	(Automatic addressing only) If SLAAC privacy extensions are enabled, this field displays the temporary IPv6 address. The temporary address changes in accordance with network changes.
SLAAC Management Address	(Automatic addressing only) Displays the address assigned by SLAAC for management of the unit using the Subnet Prefix and the interface's MAC address. This is a unique address that identifies the interface/device in the IP network.
Subnet Prefix Length	(Static addressing only) The Prefix Length in IPv6 is the equivalent of the Subnet Mask in IPv4. However, instead of being expressed in four octets as it is in IPv4, it is expressed as an integer between 1 through 128.
Gateway	If Automatic addressing is used, displays the gateway address of the network (typically the address of the network router). If Static addressing is used, enter a gateway address in hexadecimal notation.
Duplicate Address Detection	Check this checkbox to automatically detect if your Link-Local IPv6 address is a duplicate of one already in use. If so, the Link-Local IPv6 Address changes to a unique address. See RFC 4862 "IPv6 Stateless Address Autoconfiguration" for more details.
Privacy Extensions	(Automatic addressing only) Check this checkbox to enable SLAAC Privacy Extensions. As documented in RFC 4941 "Privacy Extensions for Stateless Address Autoconfiguration in IPv6", this entails using randomly generated, temporary, global scope IPv6 addresses that are regularly discarded and replaced with different addresses.
Link-Local IPv6 Address	(Read-only) A link-local address is an Internet Protocol (IP) unicast address intended to be used only to connect to the hosts on the same network. A link-local address starts with `fe80:` and is always automatically assigned.

Static Routes

Network Setting	Description
Protocol	Select whether the route is an IPv4 or IPv6 address.
Destination	Each static route requires a destination address.
Subnet Mask	(IPv4 only) This is a 32-bit subnet mask used to divide an IP address into subnets and specify the network's available hosts. If DHCP is disabled, you may enter the Network Mask in dotted-decimal format (e.g., 255.255.0.0).
Prefix Length	(IPv6 only) The Prefix Length in IPv6 is the equivalent of the Subnet Mask in IPv4. However, instead of being expressed in four octets as it is in IPv4, it is expressed as an integer between 1 through 128.
Gateway	This is the gateway that is used when no other gateway matches. This address must be reachable on your local subnet. If DHCP is disabled, you may enter the gateway address in dotted-decimal format.
Interface	The interface associated with the static route. Use the drop-down menu to make your selection.