ADDER Infinity User Manual page 18

Device Network Port
This option determines the most appropriate mode of redundancy between multiple
A.I.M. servers in a cluster. The default setting is 'Port 1' and this is correct for a typical
configuration in which the ALIF endpoints and A.I.M. server(s) are all located on one
subnet. Alternatively, where A.I.M. servers are linked to two separate subnets, both of
which can provide a route from the endpoints, then choose the 'Both' setting.
Gateway IP Address
Defines the IP address of an optional gateway device.
ethernet Port 1
The primary A.I.M. server Ethernet port can only be configured using a static IP address.
Use the three option provided to configure the IP address, netmask and DNS server
address.
ethernet Port 2
The secondary A.I.M. server Ethernet port can be configured to either: gain its details via
a DHCp server; use a Static IP address, netmask and DNS server address, or alternatively
be set to Bonded operation, whereupon three further Bonding Mode options are displayed:
• Active-backup - This can be used when both of the A.I.M. server's network
connections are linked to the same network switch. This option provides a fail-over to
cater for the possibility of hardware failure or connectivity failure between the A.I.M.
server and the switch.
In this mode, one of the A.I.M. server's network ports will be active while the other
remains dormant. If the active port experiences a failure, such as a loss of connection,
its configuration is automatically transferred to the secondary port. Once the original
primary port resumes connectivity, this will become the backup and be placed into a
dormant mode.
• broadcast - This option would be used when the twin ports of the A.I.M. server and
all attached ALIF devices are split between duplicate networks:
The 'Separate Device Networks' option mentioned earlier would be enabled on the
A.I.M. server and the respective network connections on the endpoints are connected
accordingly (e.g. copper to copper on only switch 1 and SFP to SFP only on switch 2).
In Broadcast mode, both of the A.I.M. server network connections mirror each other,
i.e. duplicate network traffic is sent out on both connections. It is assumed that the
connected devices will only listen to the network traffic intended for themselves
and drop/ignore all other traffic intended for other devices. This mode is robust but
inefficient because half of the packets are discarded.
• 802.3ad - This mode uses a similar topology to Active-Backup, (i.e. both network ports
connected to the same switch) but has two important differences: Both of the A.I.M.
server network ports are used simultaneously, and the network switch must support
LACP (Link Aggregation Control Protocol).
The A.I.M. server will 'merge' (aggregate) the two connections and treat them as
one. The only exception to this would be on 'multi-Subnet racks' where it would be
possible to have each network connection on different switches.
This mode provides the benefit of increased bandwidth availability between the A.I.M.
server and the network, but also provides a layer of redundancy. If one of the network
connections is lost, the remaining connection would take over until the link is restored.
The network traffic is not split on a packet by packet basis between the connections;
it operates on a connection basis. When a connection is established between the A.I.M.
server and one of the ALIF endpoints, this would travel via one port. When a second
connection to another endpoint is established, this could use the same port or it may
use the other. There is no order to which network port is used for any connection.
Note: When changing between bonded and any other mode, a warning message will be
displayed and, when the Save button is clicked, will cause the A.I.M. server to be rebooted.
syslog enabled
Determines whether Syslog should be used to record log data to an external Syslog
server.
syslog IP Address
The address of the external syslog server.
sNMP
This option allows the A.I.M. to connect to an external SNMP server. If SNMP is enabled,
there are three connection modes:
• Authentication + privacy
• Authentication only
• No authentication
There are two authentication types SHA or MD5 and two Privacy types AES or DES.
The MIB file can be downloaded from http://<IP>/AIM-MIB.txt
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