inS_CnGE28FX4TX_rEv–
08/31/12 PAGE 38
INSTALLATION AND OPERATION MANUAL
CNGE28FX4TX
Tech SupporT: 1.888.678.9427
Legacy Ring
Legacy ring provides support for the switch to be used in an existing ring of ComNet X-Ring
enabled switches.
X-Ring provides a faster redundant recovery than Spanning Tree topology. The action is similar
to STP or RSTP, but the algorithms between them are not the same. In the X-Ring topology, every
switch should be enabled with X-Ring or Legacy Ring function and two ports should be assigned
as the member ports in the ring. Only one switch in the X-Ring group would be set as the master
switch that one of its two member ports would be blocked, called backup port, and another port
is called working port. Other switches in the X-Ring group are called working switches and their
two member ports are called working ports. When the failure of network connection occurs,
the backup port of the master switch (Ring Master) will automatically become a working port to
recover from the failure.
The switch supports the function and interface for setting the switch as the ring master or not. The
ring master can negotiate and place command to other switches in the X-Ring group. If there are
2 or more switches in master mode, the software will select the switch with lowest MAC address
number as the ring master. The X-Ring master ring mode can be enabled by setting the Legacy
Ring configuration interface. Also, the user can identify whether the switch is the ring master by
checking the R.M. LED indicator on the front panel of the switch.
Label
Description
Legacy Ring
To enable the Legacy Ring (X-Ring) function, tick the checkbox beside
the Legacy Ring label. If this checkbox is not ticked, all the ring
functions are unavailable.
Ring Master
Select Enable for this switch to be the ring master or Disable for this
switch to be a working switch.
1st Ring Port
The primary port, when this switch is Ring Master. Select a port to
assign from the pull down selection menu.
2nd Ring Port
The backup port, used when this switch is Ring Master and the
primary port fails. Select a port to assign from the pull down selection
menu.
Save
Select to save changes.
Refresh
Select to refresh the page immediately.
