Brocade Network OS Command Reference v4.1.0 - Manual (Page 816)

778 Network OS Command Reference
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show fabric route pathinfo
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Regardless of parameter selection, the command displays the following status of the destination
port and routing information about each hop:
Target port is Provides the status of the destination port. It can have one of the following
values:
Embedded: This is the embedded port.
Not active: The port is not connected or is still initializing and has not yet
reached a stable state.
E_Port
F_Port
Hop The hop number. The local switch is hop 0.
In Port The port index of the port that the frames come in from on this path.
For hop 0, this is the source port.
Domain ID Routing bridge ID of the Network OS switch or domain of the Fabric OS
switch.
Out Port The port index of the port that the frames use to reach the next hop on this
path. For the last hop, this is the destination port.
BW The bandwidth of the output ISL in Gbps. It does not apply to the
embedded port.
Cost The cost of the ISL used by the fabric shortest path first (FSPF) routing
protocol. It applies only to an E_Port.
You can request statistics for each hop in addition to the routing information. These statistics are
presented for the input and output ports for both receive and transmit modes. You can select basic
statistics, extended statistics, or both. Statistics are not reported for the embedded port. Some
throughput values are reported in multiple time intervals to describe current path utilization and
the average throughput over a longer period of time.
To collect these statistics, this command uses a special frame that is sent hop-by-hop from the
source switch to the destination switch. To prevent such a frame from looping forever if an error
occurs, a maximum of 25 hops is enforced. The hop count includes all hops in the direct path from
source to destination, and also all the hops in the reverse path, if the tracing of the reverse path is
requested. If the hop limit is exceeded, information collected up to the switch that returned the
error is displayed along with the message “Maximum hops exceeded.”
If basic statistics are requested, the following information is provided for each hop in addition to
the routing information:
B/s (1s) Bytes per second transmitted and received over the previous 1-second
period for the in port and for the out port.
B/s (64s) Bytes per second transmitted and received over the previous 64-second
period for the in port and for the out port.
TxCrdz(1s) The length of time, in milliseconds, over the previous 1 second interval that
the port was unable to transmit frames because the transmit BB credit
was 0. The purpose of this statistic is to detect congestion or a device
affected by latency. This parameter is sampled at 1 millisecond (ms)