User Manual

Section 2: Advanced Topics
create multiple LNS LonWorks/IP interfaces in the same channel using the
same IP address (but with different ports). Without this option, only one
device may reside behind a NAT firewall, and all devices on the channel
must have unique IP addresses. This option extends the EIA-852 protocol
in a way that is not strictly compliant with that standard, though it should
still be compatible with other EIA-852 devices. You can use up to 256
devices per channel in this mode.
Aggregation
The i.LON 600 router aggregates LONWORKS packets for transporting over the IP
channel. L
ONWORKS packets are relatively small in size and often arrive at the i.LON
600 router in bursts or at a high rate. Aggregating packets decreases the bandwidth
necessary to send packets over IP, decreases IP network traffic, and greatly increases the
performance of the i.LON 600 router.
The i.LON 600 router is set through the Configuration Server to use aggregation by
default. The aggregation time parameter controls how long the router will wait for
packets. The timer operates in multiples of 16.6 milliseconds and defaults to 16
milliseconds.
If the network is idle and a single L
ONWORKS packet arrives at the
i.LON 600 router, the aggregation timer starts and the first packet is sent across the IP
channel without delay. If the network remains idle, the timer resets. However, if another
LONWORKS packet arrives within the aggregation time period, the router waits the
designated time for subsequent packets to arrive (anticipating a burst) so it can aggregate
before sending them onto the IP channel. You can set the i.LON 600 aggregation time by
double-clicking a selected channel or right clicking and selecting Channel Properties
and selecting the Protocol tab.
54 L
ONWORKS/IP Channel Parameters