C
HAPTER
35
| ERPS Commands
– 1110 –
No R-APS messages are inserted or extracted by other rings or sub-
rings at the interconnection nodes where a sub-ring is attached. Hence
there is no need for either additional bandwidth or for different VIDs/
Ring IDs for the ring interconnection. Furthermore, protection switching
time for a sub-ring is independent from the configuration or topology of
the interconnected rings. In addition, this option always ensures that
an interconnected network forms a tree topology regardless of its
interconnection configuration. This means that it is not necessary to
take precautions against forming a loop which is potentially composed
of a whole interconnected network.
Figure 417: Sub-ring without Virtual Channel
EXAMPLE
Console(config-erps)#raps-without-vc
Console(config-erps)#
ring-port This command configures a node’s connection to the ring through the east
or west interface. Use the no form to disassociate a node from the ring.
SYNTAX
ring-port {east | west} interface interface
east - Connects to next ring node to the east.
west - Connects to next ring node to the west.
interface
ethernet unit/port
unit - Unit identifier. (Range: 1)
port - Port number. (Range: 1-28)
port-channel channel-id (Range: 1-12)
DEFAULT SETTING
Not associated
COMMAND MODE
ERPS Configuration
Sub-ring
with Virtual
Channel
RPL Port
Interconnection Node
Ring Node
Major Ring
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