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ibportstate

NAME

ibportstate - handle port (physical) state and link speed of an InfiniBand port

SYNOPSIS

ibportstate [-d(ebug)] [-e(rr_show)] [-v(erbose)] [-D(irect)] [-G(uid)] [-s smlid] [-V(ersion)] [-C ca_name] [-P ca_port] [-t(imeout) timeout_ms] [-h(elp)] <dest dr_path|lid|guid> <portnum> [<op>]

DESCRIPTION

ibportstate allows the port state and port physical state of an IB port to be queried (in addition to link width and speed being validated relative to the peer port when the port queried is a switch port), or a switch port to be disabled, enabled, or reset. It also allows the link speed enabled on any IB port to be adjusted.

OPTIONS

op

Port operations allowed
 supported ops: enable, disable, reset, speed, query
 Default is query

 ops enable, disable, and reset are only allowed on switch ports
 (An error is indicated if attempted on CA or router ports)
 speed op is allowed on any port
 speed values are legal values for PortInfo:LinkSpeedEnabled
 (An error is indicated if PortInfo:LinkSpeedSupported does not support
  this setting)
 (NOTE: Speed changes are not effected until the port goes through
  link renegotiation)
 query also validates port characteristics (link width and speed)
  based on the peer port. This checking is done when the port
  queried is a switch port as it relies on combined routing
  (an initial LID route with directed routing to the peer) which
  can only be done on a switch. This peer port validation feature
  of query op requires LID routing to be functioning in the subnet.

COMMON OPTIONS

Most OpenIB diagnostics take the following common flags. The exact list of supported flags per utility can be found in the usage message and can be shown using the util_name -h syntax.

# Debugging flags

-d raise the IB debugging level.
        May be used several times (-ddd or -d -d -d).

-e show send and receive errors (timeouts and others)

-h show the usage message

-v increase the application verbosity level.
        May be used several times (-vv or -v -v -v)

-V show the version info.

# Addressing flags

-D use directed path address arguments. The path
        is a comma separated list of out ports.
        Examples:
        "0"             # self port
        "0,1,2,1,4"     # out via port 1, then 2, ...

-G use GUID address argument. In most cases, it is the Port GUID.
        Example:
        "0x08f1040023"

-s <smlid> use 'smlid' as the target lid for SM/SA queries.

# Other common flags:

-C <ca_name> use the specified ca_name.

-P <ca_port> use the specified ca_port.

-t <timeout_ms> override the default timeout for the solicited mads.

Multiple CA/Multiple Port Support

When no IB device or port is specified, the port to use is selected by the following criteria:

1. the first port that is ACTIVE.

2. if not found, the first port that is UP (physical link up).

If a port and/or CA name is specified, the user request is attempted to be fulfilled, and will fail if it is not possible.

EXAMPLES

ibportstate 3 1 disable # by lid

ibportstate -G 0x2C9000100D051 1 enable # by guid

ibportstate -D 0 1 # (query) by direct route

ibportstate 3 1 reset                          # by lid

ibportstate 3 1 speed 1                                # by lid

AUTHOR

Hal Rosenstock

<halr@voltaire.com>