Brocade 6910 Ethernet Access Switch Configuration Guide (Supporting R2.2.0.0) User Manual
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Brocade 6910 Ethernet Access Switch Configuration Guide
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Ethernet Ring Protection Switching
Show
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Domain Name – Name of a configured ERPS ring.
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Node State – Shows the following ERPS states:
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Init – The ERPS ring has started but has not yet determined the status of the ring.
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Idle – If all nodes in a ring are in this state, it means that all the links in the ring are up.
This state will switch to protection state if a link failure occurs.
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Protection – If a node in this state, it means that a link failure has occurred. This state will
switch to idle state if all the failed links recover.
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MEG Level – The maintenance entity group (MEG) level providing a communication channel for
ring automatic protection switching (R-APS) information.
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Admin Status – Shows whether ERPS is enabled on the switch.
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West Port – Shows the west ring port for this node.
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East Port – Shows the east ring port for this node.
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RPL Owner – Shows if this node is the RPL owner.
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Control VLAN – Shows the Control VLAN ID.
Configure Details
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Domain Name – Name of a configured ERPS ring.
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Admin Status – Activates the current ERPS ring.
Before enabling a ring, the global ERPS function should be enabled see (
on page 984), the east and west ring ports configured on each node, the RPL
owner specified, and the control VLAN configured.
Once enabled, the RPL owner node and non-owner node state machines will start, and the ring
will enter idle state if no signal failures are detected.
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MEG Level – The maintenance entity group (MEG) level which provides a communication
channel for ring automatic protection switching (R-APS) information. (Range: 0-7)
This parameter is used to ensure that received R-APS PDUs are directed for this ring. A unique
level should be configured for each local ring if there are many R-APS PDUs passing through
this switch.
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Node ID – A MAC address unique to the ring node. The MAC address must be specified in the
format xx-xx-xx-xx-xx-xx or xxxxxxxxxxxx.
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Node State – Refer to the parameters for the Show page.
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West Port – Connects to next ring node to the west.
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.
Once configured, this field shows the ring port for this node, and the interface state:
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Blocking – The transmission and reception of traffic is blocked and the forwarding of
R-APS messages is blocked, but the transmission of locally generated R-APS messages is
allowed and the reception of all R-APS messages is allowed.
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Forwarding – The transmission and reception of traffic is allowed; transmission, reception
and forwarding of R-APS messages is allowed.