CLI Reference Guide-R04

Chapter 21 | ERPS Commands
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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
no ring-port {east | west}
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: 1-26)
Default Setting
Not associated
Command Mode
ERPS Ring Configuration
Command Usage
◆ Each node must be connected to two neighbors on the ring. For convenience,
the ports connected are referred to as east and west ports. Alternatively, the
closest neighbor to the east should be the next node in the ring in a clockwise
direction, and the closest neighbor to the west should be the next node in the
ring in a counter-clockwise direction.
◆ Note that a ring port cannot be configured as a member of a spanning tree, a
dynamic trunk, or a static trunk.
◆ If a port channel (static trunk) is specified as a ring port, it can not be destroyed
before it is removed from the domain configuration.
◆ A static trunk will be treated as a signal fault, if it contains no member ports or
all of its member ports are in signal fault.
◆ If a static trunk is configured as a ring port prior to assigning any member ports,
spanning tree will be disabled for the first member port assigned to the static
trunk.
Example
Console(config-erps-ring)#ring-port east interface ethernet 1/12
Console(config-erps-ring)#