Redundant ring – Comtrol ES9528-XT User Guide User Manual
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RocketLinx ES9528 and ES9528-XT User Guide: 2000508 Rev. G
Redundant Ring - 81
Configuration Using the Web Interface
Redundant Ring
The most common industrial network redundancy is to form a ring or loop. Typically, managed switches are
connected in series and the last switch is connected back to the first one. In such connection, you can
implement Redundant Ring technology.
Redundant Ring Page
New Ring
(Ring ID/Name)
To create a Redundant Ring enter the Ring ID, which has range from 0 to 31. If the name
field is left blank, the name of this ring is automatically named with the Ring ID. The
maximum number of rings is 32.
Note: Once a ring is created, you cannot change it.
Ring Configuration
ID
Once a Ring is created, the Ring ID appears, and cannot be changed. In multiple ring
environments, the traffic can only be forwarded under the same Ring ID. Remember to
check the Ring ID when there are more than one ring in existence.
Name
This field shows the name of the Ring. If it is not entered when creating, it is
automatically named by the rule RingID.
Version
The version of Ring can be changed here, the choices are Rapid Super Ring or Super Ring.
Device Priority
The switch with highest priority (highest value) is automatically selected as the Ring
Master (RM). When one of the ring ports on this switch becomes a forwarding port and the
other one becomes a blocking port. If all of the switches have the same priority, the switch
with the highest MAC address is selected as the Ring Master.
Ring Port1
In a Rapid Super Ring environment, you should have two Ring ports. Whether this switch
is a Ring Master or not. When configuring Rapid Super Rings, two ports should be selected
to be Ring ports. For a Ring Master,
one of the Ring Ports becomes the forwarding port
and the other one becomes the blocking port.
Path Cost
Change the Path Cost of Ring Port1, if this switch is the Ring Master of a Ring, then it
determines the blocking port. The port with higher Path Cost in the two Ring Ports
becomes the blocking port, If the Path Cost is the same, the port with larger port number
becomes the blocking port.
Ring Port2
Assign another port for ring connection.
Path Cost
Change the Path Cost of Ring Port2.
Rapid Dual
Homing
Rapid Dual Homing is an important feature of Rapid Super Ring redundancy technology.
When you want to connect multiple RSR or form redundant topology with other vendors,
RDH allows you to have a maximum of seven multiple links for redundancy without any
problem.
In RDH, you do not need to configure a specific port to connect to other protocol. The RDH
selects the fastest link for the primary link and blocks all the other links to avoid a loop.
If the primary link failed, RDH automatically forwards the secondary link for a network
redundant. If there are more connections, they are standby links and are recovered if
both primary and secondary links are broken.
Ring status
To Enable/Disable the Ring, remember to enable the Ring after you add it.
Apply
Click Apply to apply the settings.
Note: You must Save the settings (
), if you want to maintain these settings if the
ES9528 is powered off.