Displaying MRP information

You can display the following MRP information:

Topology group configuration information
Ring configuration information and statistics

Topology group configuration information

To display topology group information, enter the following command.

Syntax: show topology-group [group-id]

Refer toDisplaying topology group information for more information.

Ring configuration information and statistics

To display ring information, enter the following command.

device#show metro
Metro Ring 1
=============
Ring       State     Ring       Master     Topo       Hello      Prefwing
id                   role       vlan       group      time(ms)   time(ms)
2          enabled   member     2          not conf   100        300
Ring interfaces    Interface role     Forwarding state    Active interface    Interface Type
ethernet 1/1/1       primary            disabled            none                Regular
ethernet 1/1/2       secondary          forwarding          ethernet 2          Tunnel
RHPs sent          RHPs rcvd          TC RHPs rcvd        State changes
3                    0                    0                     4

Syntax: show metro [ ring-id ]

This display shows the following information.

Table 4 CLI display of MRP ring information
Field	Description
Ring id	The ring ID
State	The state of MRP. The state can be one of the following: enabled - MRP is enabled disabled - MRP is disabled
Ring role	Whether this node is the master for the ring. The role can be one of the following: master member
Master vlan	The ID of the master VLAN in the topology group used by this ring. If a topology group is used by MRP, the master VLAN controls the MRP settings for all VLANs in the topology group. NOTE The topology group ID is 0 if the MRP VLAN is not the master VLAN in a topology group. Using a topology group for MRP configuration is optional.
Topo group	The topology group ID.
Hello time	The interval, in milliseconds, at which the Forwarding port on the ring master node sends Ring Hello Packets (RHPs).
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 Preforwarding interface also changes from Preforwarding to Forwarding if it receives an RHP whose forwarding bit is on.
Ring interfaces	The device 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 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.
Forwarding 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
Active interface	The physical interfaces that are sending and receiving RHPs. NOTE If a port is disabled, its state is shown as "disabled". NOTE If an interface is a trunk group, the member port which comes up first is listed.
Interface Type	Shows if the interface is a regular port or a tunnel port.
RHPs sent	The number of RHPs sent on the interface. NOTE This field applies only to the master node. On non-master nodes, this field contains 0. This is because the RHPs are forwarded in hardware on the non-master nodes.
RHPs rcvd	The number of RHPs received on the interface. NOTE On most Ruckus devices, this field applies only to the master node. On non-master nodes, this field contains 0. This is because the RHPs are forwarded in hardware on the non-master nodes. However, on the FastIron devices, the RHP received counter on non-master MRP nodes increment. This is because, on FastIron devices, the CPU receives a copy of the RHPs forwarded in hardware.
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 interface state changes that have occurred. The state can be one of the states listed in the Forwarding state field.
Interface Type	Shows if the interface is a regular port or a tunnel port.

Contents

Displaying MRP information