IES-1000 User’s Guide

You can n-wire bundle multiple groups of ports on a single IES-1000 (or even within a single SAM1008 module) as long as they do not overlap.

12.5Port Bonding

The port bonding feature allows you to send IP packets over two to eight G.SHDSL connections as a single connection. Since n-wire mode occurs at the physical level and port bonding occurs at the software level, you can combine n-wire bundled groups as well as individual ports. This can give increased bandwidth in LAN-to-LAN applications between IES-1000s.

You can easily select G.SHDSL ports or n-wire bundled groups to bond together. The IES-1000 checks the transfer rates of the individual G.SHDSL ports when they connect. The IES-1000 retrains any of the bonded ports that have a lower speed up to three times in an attempt to get them to reach the higher speed. If a port does not reach the higher speed (or at least within a 640 Kbps tolerance of the higher speed) by the third attempt, that port is dropped.

You can bond multiple groups of ports on a single IES-1000 (or even within a single SAM1008 module) as long as they do not overlap.

12.6N-wire Mode with Port Bonding Example

The following figure shows a SAM1008’s ports one to four and five to eight physically bundled into 8-wire groups 1 and 2 (respectively). These two 8-wire bundled groups are then bonded into a single logical connection (3 in the figure).

Figure 12-1 N-wire Mode with Port Bonding Example

With eight ports bundled together, use multiple TCP connections in order to reach the higher speeds. This is due to the limiting characteristics of a single TCP session. For example, if you need to make a large FTP file transfer, it would be faster to use two FTP clients.

When using multiple G.SHDSL ports to connect two SAM1008s, it is recommended that you

bond all of the G.SHDSL ports to avoid network loops (and improve throughput).

12-2

G.SHDSL Module Port Setup