Brocade Communications Systems A7533A - Brocade 4Gb SAN Switch Base Command Reference Manual page 513

Fabric OS Command Reference Manual
53-1000436-01
-r committed_rate
Specifies committed rate for the data stream, in Kb/s. If specified, the traffic
generator is limited by a traffic shaper. This characterizes the end-to-end IP
path performance based on the data rate configured for a tunnel between the
same end-points. If a rate is not specified, the traffic generator competes for
uncommitted bandwidth. This operand is optional.
-t running_time
Specifies total time to run the test traffic stream, in seconds. If not specified,
the test runs continuously until you explicitly abort the operation with Ctrl+c.
This operand is optional.
-z size
Specifies the size for each buffer handed to the TCP layer, in bytes. If not
specified, the maximum sized data buffer is used based on the outgoing IP
interface MTU. The size is the only buffer size sent to the TCP layer. This
operand is optional.
-q diffserv
Specifies the DSCP (DiffServ Code Point) marking used for the TCP
connection. This operand is 0 to 63 (inclusive). The default value is 0.
--ipperf output displays:
Sampling frequency(s)
This is the interval specified with the --ipperf command with -i option or the
default (30s).
BW This is the bandwidth measured in the last interval. Bandwidth is defined as
the total packets and bytes sent. Note: BW represents what the FCIP tunnel /
FC application sees for throughput rather than the Ethernet on-the-wire bytes.
WBW This is the weighted bandwidth currently with a gain of 50 percent.
Loss (%) This is the number of TCP retransmits. This number is an average rate over
the last display interval.
Delay (ms) This is the TCP smoothed RTT and variance estimate in milliseconds.
PMTU PMTUPath MTU; This is the largest IP-layer datagram that can be transmitted
over the end-to-end path without fragmentation. This value is measured in
bytes and includes the IP header and payload. Note: There is limited support
for black hole PMTU detection. If the Jumbo PMTU (anything over 1500) does
not work, --ipperf will try 1500 bytes. If 1500 PMTU fails, --ipperf will try the
lower PMTU of 1260 (the minimum PMTU supported for FCIP tunnels). If
1260 also fails, --ipperf will give up. There is no support for aging. During
black hole PMTU detection the BW, WBW, Loss and PMTU values printed may
not be accurate.
--ping [slot/]ge port -s src_ip -d dst_ip [-n num_requests] [-q service_type] [-t ttl]
[-w wait_time] [-z size]
Pings a destination IP address from one of the source IP interfaces on the
GbE port. Valid arguments include:
-s src_ip
Specifies the source IP address that originates the ping request.
2
portCmd
481