Dell PowerEdge M710 Fabric OS Command Reference Manual Supporting Fabric - Page 802

2 portShow Function Synopsis Commands supported only on the Brocade 7500/7500E and FR4-18i portshow option [slot/]ge_port [all| tunnel_id ] [arguments] Description Use this command to display configuration parameters and status information for FCIP tunnels on the Brocade 7500/7500E switch and on the FR4-18i blade. The following display options are supported only on these platforms: • portShow fciptunnel - Displays Fibre Channel over IP (FCIP) tunnel configuration settings including the following: - Additional performance parameters - FC data path credit data - Connection parameter information - IKE and IPSec policy information on IPSec-enabled tunnels - VC to FCIP QoS mapping table - FCIP TCP Byte Stream statistics on Byte Stream-enabled tunnels - History of TCP connections - SnapShow capture of TCP statistics between two points in time • portShow iscsi - Displays iSCSI configuration information. • portShow mode- Displays Port Mode information. • portShow ficon - Displays FICON parameters on FICON-configured tunnels. • portShow inbandmgmt - Displays inband management configuration (Brocade 7500 only). In Fabric OS v6.2.0 and later, each GbE port is associated with a TCP history, which tracks the state of statistics at the moment of a TCP connection failure. An entry is logged for the TCP connection when it encounters any of the following failures: • Maximum number of retransmits is exceeded (MAX RTX) • Maximum keep alive timeout is exceeded (KEEPALV TO) • RST packet is received (RESET RCVD) You can display the TCP history with the fciptunnel -hist command. This command displays a maximum of 16 entries. Once the maximum history length is reached, the oldest entry is removed from the end, and the newest entry is added to the front of the TCP history as future connection failures occur. The following data items are captured when a TCP connection encounters a failure: Reason The reason for the TCP connection failure RTT Round trip time RTT H Round trip time high water mark Var Variance Var H Variance high water mark OOO Counter of out-of-order segments OOO H Out-of-order segments high water mark Sendw Cwnd Size of sender congestion window (bytes) Rx win Size of receive window (bytes) Fast Rtx Fast retransmits 770 Fabric OS Command Reference 53-1001764-02