Configuration Guide User guide

BigIron RX Series Configuration Guide 425
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MRP CLI example
14
MRP CLI example
The following examples show the CLI commands required to implement the MRP configuration
shown in Figure 69 on page 413.
NOTE
For simplicity, the figure shows the VLANs on only two switches. The CLI examples implement the
ring on all four switches.
Prefwing time The number of milliseconds an MRP interface that has entered the
Preforwarding state will wait before changing to the Forwarding state.
If a member port in the Preforwarding state does not receive an RHP within
the Preforwarding time (Prefwing time), the port assumes that a topology
change has occurred and changes to the Forwarding state.
The secondary port on the Master node changes to Blocking if it receives an
RHP, but changes to Forwarding if the port does not receive an RHP before
the preforwarding time expires.
NOTE: A member node’s Preforwarding interface also changes from
Preforwarding to Forwarding if it receives an RHP whose forwarding
bit is on.
Ring interfaces The device’s two interfaces with the ring.
NOTE: If the interfaces are trunk groups, only the primary ports of the
groups are listed.
Interface role The interface role can be one of the following:
• primary - The primary interface
• Master node – The interface generates RHPs.
• Member node – The interface forwards RHPs received on the other
interface (the secondary interface).
• secondary – The interface does not generate RHPs.
• Master node – The interface listens for RHPs.
• Member node – The interface receives RHPs.
Interface state Whether MRP Forwarding is enabled on the interface. The forwarding state
can be one of the following:
• blocking – The interface is blocking Layer 2 data traffic and RHPs
• disabled – The interface is down
• forwarding – The interface is forwarding Layer 2 data traffic and RHPs
• preforwarding – The interface is listening for RHPs but is blocking Layer
2 data traffic
Interface Type Shows if the interface is a regular port or a tunnel port.
RHPs sent The number of RHPs sent on the interface.
RHPs rcvd The number of RHPs received on the interface.
TC RHPs rcvd The number of Topology Change RHPs received on the interface. A Topology
Change RHP indicates that the ring topology has changed.
State changes The number of MRP forwarding state changes that have occurred. The state
can be one of the states listed in the Forwarding state field.
TABLE 89 CLI display of MRP ring information (Continued)
This field... Displays...