HP 8/80 Brocade Fabric OS Command Reference Guide v6.1.0 (53-1000599-02, June - Page 502
display interval., The number of TCP retransmits. This number is an average rate over the last
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2 portCmd -r committed_rate Specifies a committed rate for the data stream, in Kbps. 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 aborted with Ctrl+c. This operand is optional. -z size Specifies the size, in bytes, of the trace route packet to use. The default is 64 bytes. In an IPv4 environment, the ICMP/IP header occupies 28 bytes. In an IPv6 environment, it occupies 48 bytes.The total size, including ICMP/IP headers (28 or 48 bytes without IP options) cannot be greater than the IP MTU configured on the interface. This operand is optional. -v vlan_id Specifies the VLAN ID. Values must be in the range of 1 - 4094. There is no default value. Note that a VLAN tag entry must exist on the local and remote sides prior to issuing the -v option. A VLAN Tag table entry is dynamically maintained by the ipperf application. See the portCfg help page for details on creating a VLAN tag table. -c L2 Class-of-Service Specifies Class of Service/Priority, as defined by IEEE 802.1p. Valid values are 0 to 7. The default is 0. This operand is optional with the -v option The output of --ipperf output includes: Sampling frequency(s) The interval specified with --ipperf -i option or the default (30 seconds). BW 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 The weighted bandwidth currently with a gain of 50 percent. Loss (%) The number of TCP retransmits. This number is an average rate over the last display interval. Delay (ms) The TCP smoothed round-trip time (RTT) and variance estimate in milliseconds. PMTU The path 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 tries 1500 bytes. If 1500 PMTU fails, --ipperf tries the lower PMTU of 1260 (the minimum PMTU supported for FCIP tunnels). If 1260 also fails, --ipperf gives 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 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. IPv6 addresses are supported. 476 Fabric OS Command Reference 53-1000599-02