Using Mrp Diagnostics; Enabling Mrp Diagnostics; Displaying Mrp Diagnostics - Dell PowerConnect B-RX Configuration Manual

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Using MRP diagnostics

The <string> parameter specifies a name for the ring. The name is optional, but it can have up to
20 characters long and can include blank spaces. If you use a name that has blank spaces,
enclose the name in double quotation marks (for example: "Customer A").
Syntax: [no] ring-interface ethernet
The ethernet <primary-if> parameter specifies the primary interface. On the master node, the
primary interface is the one that originates RHPs. Ring control traffic and Layer 2 data traffic will
flow in the outward direction from this interface by default. On member nodes, the direction of
traffic flow depends on the traffic direction selected by the master node. Therefore, on a member
node, the order in which you enter the interfaces does not matter.
The ethernet <secondary-if> parameter specifies the secondary interface.
Syntax: [no] enable
The enable command enables the ring.
Using MRP diagnostics
The MRP diagnostics feature calculates how long it takes for RHP packets to travel through the ring.
When you enable MRP diagnostics, the software tracks RHP packets according to their sequence
numbers and calculates how long it takes an RHP packet to travel one time through the entire ring.
When you display the diagnostics, the CLI shows the average round-trip time for the RHP packets
sent since you enabled diagnostics. The calculated results have a granularity of 1 microsecond.

Enabling MRP diagnostics

To enable MRP diagnostics for a ring, enter the following command on the Master node, at the
configuration level for the ring.
BigIron RX(config-vlan-2-mrp-1)#diagnostics
Syntax: [no] diagnostics
NOTE
This command is valid only on the master node.

Displaying MRP diagnostics

To display MRP diagnostics results, enter the following command on the Master node.
BigIron RX(config)# show metro 2 diag
Metro Ring 2 - CustomerA
=============
diagnostics results
Ring
id
2
Diag frame sent
1230
Syntax: show metro <ring-id> diag
404
Diag RHP average
state time(microsec)
enabled 125
Diag frame lost
0
Recommended Recommended
hello time(ms) Prefwing time(ms)
100 300
BigIron RX Series Configuration Guide
53-1001810-01