Commands Reference, Volume 3

lscomg Command

Purpose

Lists information about the communication groups of a peer domain.

Syntax

lscomg [-l | -t | -d | -D delimiter] [-x] [-i] [-h] [-TV] [communication_group]

Description

The lscomg command lists information about the communication groups defined to the online peer domain on which the command runs. When a communication group name is specified, the information is limited to that communication group's information only.

Some of the communication group information that is listed follows:

Name: Specifies the name of the communication group.
Sensitivity: Specifies the number of missed heartbeats that constitute a failure.
Period: Specifies the number of seconds between heartbeats.
Priority: Specifies the relative priority of the communication group.
Broadcast: Indicates whether broadcast should be used if it is supported by the underlying media.
SourceRouting: Indicates whether source routing should be used if it is supported by the underlying media.
NIMPath: Specifies the the path to the Network Interface Module (NIM) that supports the adapter types in the communication group.
NIMParameters: Specifies the NIM start parameters.

The -i flag is used to display the interface resource information for those interface resources that refer to the communication group specified by the communication_group parameter. When the -i flag is specified, the following information is listed:

Name: Specifies the name of the resource interface that refers to this communication group.
NodeName: Specifies the host name of the resource interface that refers to this communication group.
IPAddr: Specifies the IP address of the resource interface that refers to this communication group.
SubnetMask: Specifies the subnet mask of the resource interface that refers to this communication group.
Subnet: Specifies the subnet of the resource interface that refers to this communication group.

Flags

-l: Displays the information on separate lines (long format).
-t: Displays the information in separate columns (table format). This is the default format.
-d: Displays the information using delimiters. The default delimiter is a colon (:). Use the -D flag if you want to change the default delimiter.
-D delimiter: Displays the information using the specified delimiter. Use this flag to specify a delimiter other than the default colon (:) -- when the information you want to display contains colons, for example. You can use this flag to specify a delimiter of one or more characters.
-x: Excludes the header (suppresses header printing).
-i: Lists information about the interface resource that refers to the specified communication group.
-h: Writes the command's usage statement to standard output.
-T: Writes the command's trace messages to standard error. For your software service organization's use only.
-V: Writes the command's verbose messages to standard output.

Parameters

communication_group: Specifies the name of the communication group to be listed. communication_group can be a communication group name or a substring of a communication group name. When it is a substring, any defined communication group name that contains the substring will be listed.

Security

The user of the lscomg command needs read permission for the IBM.CommunicationGroup resource class. Read permission for the IBM.NetworkInterface resource class is required to list the network interface information. By default, root on any node in the peer domain has read and write access to these resource classes through the configuration resource manager.

Exit Status

0: The command ran successfully.
1: An error occurred with RMC.
2: An error occurred with a command-line interface script.
3: An incorrect flag was entered on the command line.
4: An incorrect parameter was entered on the command line.
5: An error occurred that was based on incorrect command-line input.
6: The communication group definition does not exist.

Environment Variables

CT_CONTACT: Determines the system where the session with the resource monitoring and control (RMC) daemon occurs. When CT_CONTACT is set to a host name or IP address, the command contacts the RMC daemon on the specified host. If CT_CONTACT is not set, the command contacts the RMC daemon on the local system where the command is being run. The target of the RMC daemon session and the management scope determine the resource classes or resources that are processed.

Restrictions

This command must be run on a node that is defined and online to the peer domain on which the communcation group exists.

Standard Input

When the -f "-" flag is specified, this command reads one or more node names from standard input.

Standard Output

When the -h flag is specified, this command's usage statement is written to standard output. All verbose messages are written to standard output.

Standard Error

All trace messages are written to standard error.

Examples

In these examples, nodeA is defined and online to peer domain ApplDomain.

To list general information about the communication groups for ApplDomain, run this command on nodeA:

lscomg

The output will look like this:

Name  Sensitivity  Period  Priority  Broadcast  SourceRouting  NIMPath                      NIMParameters  
ComG1      2          2        1        no          yes        /usr/sbin/rsct/bin/hats_nim      -l 5

To list the interface information for the interface resources that refer to the communication group ComGrp1 for the peer domain ApplDomain, run this command on nodeA:

lscomg -i ComGrp1

The output will look like this:

Name    NodeName    IPAddr         SubnetMask       Subnet 
eth0    n24         9.234.32.45    255.255.255.2    9.235.345.34 
eth0    n25         9.234.32.46    255.255.255.2    9.235.345.34

Location

/usr/sbin/rsct/bin/lscomg: Contains the lscomg command

Related Information

Commands: chcomg, lsrpnode, lsrpdomain, mkcomg, preprpnode, rmcomg