Brocade Network OS Administrator’s Guide v4.1.1 - Manual (Page 206)

Monitoring Fibre Channel ports
To monitor a Fibre Channel port, in privileged EXEC mode, enter the show interface FibreChannel
rbridge-id/slot/port command for the Fibre Channel port you want to monitor. The command output
provides lots of information about the various hardware counters associated with the port.
This command has a basic version and a detail version. The basic version of the command provides
general port information such as status, identification, and configuration information, along with
interrupt statistics, link status counters, and so on, as shown in the following example:
switch# show interface FibreChannel 66/0/1
fibrechannel 66/0/1 is up (No_Light). Protocol state is down.
Pluggable media present
LineSpeed Actual:
PortSpeed: N8Gbps
portDisableReason: None
PortId: 427900
PortIfId: 4302303f
PortWwn: 20:79:00:05:33:67:26:78
Distance: normal
Last clearing of show interface counters: 00:00:00
Interrupts: 0 Link_failure: 0 Frjt: 0
Unknown: 0 Loss_of_sync: 0 Fbsy: 0
Lli: 2 Loss_of_sig: 2
Proc_rqrd: 0 Protocol_err: 0
Timed_out: 0 Invalid_word: 0
Rx_flushed: 0 Invalid_crc: 0
Tx_unavail: 0 Delim_err: 0
Free_buffer: 0 Address_err: 0
Overrun: 0 Lr_in: 0
Suspended: 0 Lr_out: 0
Parity_err: 0 Ols_in: 0
2_parity_err: 0 Ols_out: 0
Rate info:
Bandwidth: 8.00G
Tx performance: 0 B/sec
Rx performance: 0 B/sec
The detailed version of the command, illustrated below, tells you how much traffic has been
transmitted or received, and how many times certain error conditions have occurred. Specifically, the
tim_txcrd_z counters tell you how many times the port was unable to transmit frames because the
transmit BB credit was zero. A number greater than zero indicates either that there is congestion on
the port or that a device is affected by latency. A larger number indicates a greater problem. A sample
is taken every 2.5 microseconds.
switch# show interface FibreChannel 66/0/1 detail
fibrechannel 66/0/1 is up. Protocol state is up (connected)
Pluggable media present
LineSpeed Actual: 400,800_MB/s
portSpeed: N8Gbps
portDisableReason: None
portId 423100
portIfId: 43020026
portWwn: 20:31:00:05:33:6f:27:57
Distance normal
Last clearing of show interface counters: 00:00:00
Rx Statistics:
stat_wrx 118 4-byte words received
stat_frx 4 Frames received
stat_c2_frx 0 Class 2 frames received
stat_c3_frx 0 Class 3 frames received
stat_lc_rx 2 Link control frames received
stat_mc_rx 0 Multicast frames received
Tx Statistics:
stat_wtx 282 4-byte words transmitted
stat_ftx 12 Frames transmitted
stat_mc_tx 0 Multicast frames transmitted
tim_txcrd_z 2881 Time TX Credit Zero (2.5Us ticks)
tim_txcrd_z_vc 0- 3: 2881 0 0 0
Monitoring Fibre Channel ports
206 Network OS Administrator’s Guide
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