User`s guide

HTML SET UP & DIAGNOSTIC
Setting up the XSRING Nr 2
• Select the Ethernet & switching” menu and then the “SHDSL port” menu.
• Select the NTU checkbox for port 1 and port 2.
• Select the “Signal power” value “Auto” for port 1 and port 2.
• Select the “SHDSL ports aggregation” checkbox.
• Save and click the reboot button.
13 Failsafe ring set up
13.1 Overview
The failsafe ring topology improves availability of the network :
if one line fails, the communication remains possible as previously
between all the devices.
If one SHDSL switch fails, the communication remains possible except
with the devices connected to the SHDSL switch in failure.
The XSRING provides two kinds of failsafe ring solutions :
The ETIC failsafe ring
:
It is a proprietary solution.
The cicatrisation delay is short and the
configuration very simple; but it runs
only if the network is a ring.
One switch of the ring has a particular
function; its name is the Ring master.
The function of the Ring master is to
interrupt virtually one of the two lines to
which it is connected so as to avoid the
endless propagation of broadcast
frames or of some other frames.
If the ring master fails, the
communication remains possible
between the devices connected to the
other XSRING. Switches.
Page 36 User’s guide ref 9014809-03 Failsafe ring SHDSL switch