Network

Network

The Library—>Network
configuration page allows you to view and update the routing
information on the jetNEXUS ALB-X. The settings are organised in the
following sections:

Basic Setup

Basic Setup:

ALB Name:

Add in a name for your
jetNEXUS ALB-X appliance. Please note that this cannot be changed
if there is more than 1 member in the Cluster. Please see Clustering

IPv4 Gateway:

Add in the IPv4 Gateway address.
This will need to be in the same subnet as an existing adapter. If you
add in Gateway incorrectly you will see a White Cross in a red circle. When you add in a correct gateway you will see a green success banner at the bottom of the page and a white tick in a green circle next to the IP address.

IPv6 Gateway:

Add
in the IPv6 Gateway address. This will need to be in the same
subnet as an existing adapter. If you add in Gateway incorrectly you
will see a White Cross in a red circle. When you add in a correct
gateway you will see a green success banner at the bottom of the page
and a white tick in a  green circle next to the IP address.

DNS Server 1:

Add in the IPv4 address of your first DNS server.

DNS Server 2:

Add in the IPv4 address of
your second DNS server

Adapter Details

Here you can add, remove and update the adapter settings.

adapterdetails

Adapter:

Double click to see the
physical adapters installed on your appliance. Choose an adapter from the list


VLAN:

Double
click to add the VLAN ID for the adapter. A VLAN is a Virtual Local
Area Network which creates a distinct broadcast domain. A VLAN has the
same attributes as physical LAN but it allows for end stations to be
grouped together more easily if they are not on the same network switch


IP Address:

Double
click to add the IP address associated with the adapter
interface.
You can add multiple IP addresses to the same interface. This should be an IPv4 32-bit number in quad dotted decimal notation.
Example: 192.168.101.2


Subnet Mask
:

Double
click to add the subnet mask assigned to the adapter interface. This
should be an IPv4 32-bit number in quad dotted decimal notation.
Example: 255.255.255.0


Gateway:

Add a gateway for the interface. When
this is added the ALB-X will set-up a simple policy that will allow
connections initiated from this interface to be returned via this
interface to the gateway router specified. This allows the ALB-X to be
installed in more complex networking environments without the hassle of
manually configuring complex policy based routing.


Description:

Double click to add a
description for your adapter. Example: Public Interface. Note: The ALB-X will automatically name the first interface Green Side, the second interface Red Side and the third interface Side 3 etc. Please feel free to change these naming conventions to your own choice.


Web Console
:

Double
click the column then tick the box to assign the interface as the
management address for the Graphical User Interface Web Console.
Please be very careful when changing the interface that Web Console
will listen on. You will need to have the correct routing set up or be
in the same subnet as the new interface in order to reach the Web
Console after the change. The only way to change this back is to access
the command line and issue the set greenside command. This will delete all interfaces except for eth0.

 

Interfaces

interfaces

 

  • The settings on this screen control the network access. The defaults
    are to fix speed at 100 Mbps and full duplex. This avoids any issue
    with certain networking devices that have auto-negotiation which
    re-negotiates too frequently.
  • The appliance can support speeds from 10 to 1000; for 1000 this should
    set to auto/auto. If this does not work, set the exact network hardware
    values.
  • The speed and duplex setting should only be changed for hardware
    appliance.

    • Virtual appliances will take their configuration from the
      underlying hypervisor.
  • In this section you can add and remove interfaces to a Bond once the bond has been configured in the section below.

Bonding

Bonding allows you to aggregate multiple ports into a single group,
effectively combining the bandwidth into a single connection. Bonding
also allows you to create multi-gigabit pipes to transport traffic
through the highest traffic areas of your network. Note: this is only
relevant for your hardware version of ALB-X. Do not use bonding for the
Virtual Appliance.

Bonding Modes

balance-rr:

Transmits packets in sequential order from the first available slave to the last.


active-backup:

Has one interface which will be active
and the second interface will be in standby. This secondary interface
only becomes active if the active connection on the first interface
fails.


balance-xor:

Transmits
based on source MAC address XOR’d with destination MAC address. This selects the same slave for each destination Mac address.


broadcast:

Transmits everything on all slave interfaces.


802.3ad:

Creates aggregation groups that share the same speed and duplex settings.
Utilizes all slaves in the active aggregator according to the 802.3ad
specification.


balance-tlb:

The Adaptive transmit load balancing bonding mode: Provides channel bonding that does not require any special switch support. The outgoing traffic is distributed according to the current load (computed relative to the speed) on each slave.
Incoming traffic is received by the current slave. If the receiving slave fails, another slave takes over the MAC address of the failed receiving slave.


balance-alb:

The Adaptive load balancing bonding
mode: also includes balance-tlb plus receive load balancing (rlb) for
IPV4 traffic, and does not require any special switch support. The
receive load balancing is achieved by ARP negotiation. The bonding
driver intercepts the ARP Replies sent by the local system 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 peers use
different hardware addresses for the
server.

 

Configure Bonding

  • Click on Add button on the bonding section and choose which bonding mode you wish to use

  • Assign which interfaces are to be bonded in the interface
    section. In the example below eth0, eth1 and  eth2 are now part of
    bond0. Whilst Eth0 remains on its own as the management interface

Adapter Status

Adapter Up

Adapter Down

  Adapter Unplugged

Adapter missing

IP Addressing

Now that you have added your bond you can go to the Adapter Details section to add the IP address and policy routing details

Static Route

You can manually add routes for specific subnets in this section.

Destination:

Enter the destination network address in decimal dotted notation. Example 123.123.123.5


Gateway:

Enter the gateway IPv4 address in decimal dotted notation. Example 10.4.8.1


Mask:

Enter the destination subnet mask in decimal dotted notation. Example 255.255.255.0


Adapter:

Enter the adapter that the gateway can be reached on. Example eth1.


Active:

A green tick box will indicate that the
gateway can be reached. A red cross will indicate that the gateway
cannot be reach on that interface. Please make sure you have set up an
interface and IP address on the same network as the gateway

 

staticroute

Static Route Details

This section will provide information about all of the routes configured on your ALB-X.

routedetails

Advanced Network Settings

Server Nagle:

Tick this box to enable. This is a means to improve efficiency of TCP/IP networks by reducing the number of packets that need to be sent over the network. This is applied to the Server side of the transaction. Care must be taken with the server settings as nagle and delayed ack may severely impact performance.

Client Nagle:

Tick the box to enable. As above but applied to the Client side of the transaction.

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