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Operating Systems AIX AIX with 2 Net Interfaces lose connectivity Post 302908219 by karlochacon on Friday 4th of July 2014 03:26:46 PM
Old 07-04-2014
AIX with 2 Net Interfaces lose connectivity

hi guys

We have a AIX Server with TSM installed.
This server has en0 for administration purposes and we have en1 for backup stuff.

en0 subnet 10.10.10.x
en1 subnet 10.10.20.x

The issue we are having is all of a sudden the LPARs we are backing up lose connectivity to the AIX-TSM Server. for example
en1 ip is 10.10.20.10 and a TSM LPAR client that we are backing up is 10.10.20.11

Backup fails and we found that LPAR client 10.10.20.11 won't ping 10.10.20.10, but if go to the AIX-TSM server ping works and ping from LPAR client is back.

It's like ping from the AIX-TSM box reactivates connectivity.

Something important to mention we found the problem making backups but today we were doing to test and the connectivity is gone doing nothing and pinging from AIX-TSM server to LPAR Clients reactivates it

Anyone has seen an issue like this?

en0 is always fine

thanks a lot
 

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IBPING(8)							Open IB Diagnostics							 IBPING(8)

NAME
IBPING - ping an InfiniBand address SYNOPSIS
ibping [options] <dest lid | guid> DESCRIPTION
ibping uses vendor mads to validate connectivity between IB nodes. On exit, (IP) ping like output is show. ibping is run as client/server. Default is to run as client. Note also that a default ping server is implemented within the kernel. OPTIONS
-c, --count stop after count packets -f, --flood flood destination: send packets back to back without delay -o, --oui use specified OUI number to multiplex vendor mads -S, --Server start in server mode (do not return) Addressing Flags -L, --Lid The address specified is a LID -G, --Guid The address specified is a Port GUID -s, --sm_port <smlid> use 'smlid' as the target lid for SA queries. Port Selection flags -C, --Ca <ca_name> use the specified ca_name. -P, --Port <ca_port> use the specified ca_port. Local port Selection Multiple port/Multiple CA support: when no IB device or port is specified (see the "local umad parameters" below), the libibumad library selects the port to use 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 libibumad library attempts to fulfill the user request, and will fail if it is not possible. For example: ibaddr # use the first port (criteria #1 above) ibaddr -C mthca1 # pick the best port from "mthca1" only. ibaddr -P 2 # use the second (active/up) port from the first available IB device. ibaddr -C mthca0 -P 2 # use the specified port only. Configuration flags --config, -z <config_file> Specify alternate config file. Default: /etc/infiniband-diags/ibdiag.conf -t, --timeout <timeout_ms> override the default timeout for the solicited mads. Debugging flags -h, --help show the usage message -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) -v, --verbose increase the application verbosity level. May be used several times (-vv or -v -v -v) -V, --version show the version info. FILES
CONFIG FILE /etc/infiniband-diags/ibdiag.conf A global config file is provided to set some of the common options for all tools. See supplied config file for details. AUTHOR
Hal Rosenstock < halr@voltaire.com > IBPING(8)
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