Network Settings

General

Network Setting	Description
General
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 version 4 (IPv4) addresses of the Domain Name Servers to use.
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.
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

Network Setting	Description
Interfaces
eth0 \| eth1 \| eth2 \| ...	Allows for multiple interfaces. Select the appropriate tab to view and configure. Note Depending upon your device, the network interface prefixes may differ.
Bond Interface	Bonding enables an administrator to use more than one physical network port as a single connection. This can be used to increase performance or redundancy of a server.
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.

Static Routes

Network Setting	Description
Static Routes
Destination	Each static route requires a destination.
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	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.