Configuration Guide User guide

628 FastIron Configuration Guide
53-1002494-02
Metro Ring Protocol
Metro Ring Protocol diagnostics
The Metro Ring Protocol (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.
Brocade(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.
Syntax: show metro <ring-id> diag
This display shows the following information.
TABLE 116 CLI display of MRP ring diagnostic information
Field Description
Ring id The ring ID.
Diag state The state of ring diagnostics.
RHP average time The average round-trip time for an RHP packet on the ring. The
calculated time has a granularity of 1 microsecond.
Recommended hello time The hello time recommended by the software based on the RHP average
round-trip time.
Recommended Prefwing time The preforwarding time recommended by the software based on the
RHP average round-trip time.
Brocade#show metro 1 diag
Metro Ring 1 - CustomerA
=============
diagnostics results
Ring Diag RHP average Recommended Recommended
id state time(microsec) hello time(ms) Prefwing time(ms)
2 enabled 125 100 300
Diag frame sent Diag frame lost
1230 0