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4.2.3 Adding hardware connections
We consider a problem in which one of the BPAs in a frame is not responding to CNM and
xCAT as expected with the lshwconn command, as shown in Example 4-14.
Example 4-14 lshwconn shows missing BPA connections (A-side responds, B-side does not)
# lshwconn frame
frame06: 40.6.0.1: side=a,ipadd=40.6.0.1,alt_ipadd=unavailable,state=LINE UP
frame06: 40.6.0.2: No connection information found for hardware control point
"40.6.0.2", please create the connection for this hardware control point firstly.
# lshwconn bpa -T lpar
40.6.0.2: 40.6.0.2: No connection information found for hardware control point
"40.6.0.2", please create the connection for this hardware control point firstly.
40.6.0.1: 40.6.0.1: side=a,ipadd=40.6.0.1,alt_ipadd=unavailable,state=LINE UP
# lshwconn bpa -T fnm
40.6.0.2: 40.6.0.2: No connection information found for hardware control point
"40.6.0.2", please create the connection for this hardware control point firstly.
40.6.0.1: 40.6.0.1: side=a,ipadd=40.6.0.1,alt_ipadd=unavailable,state=LINE UP
As described in 4.1.3, "Node does not respond to queries or rpower command" on page 246,
each BPA and CEC cage requires two hardware connections that are defined in
/var/opt/isnm/hdwr_svr/data/HmcNetConfig. One of the connections is for xCAT and
includes a connection type (-tooltype) of lpar. The other connection is for CNM and includes
an FNM connection type. In this case, the hardware connection definitions for the BPA on the
B-side of frame 78AC-100*992003H (IP@ 40.6.0.2) are missing, as shown in Example 4-15.
Example 4-15 Checking BPA connections in /var/opt/isnm/hdwr_svr/data/HmcNetConfig
# grep 78AC /var/opt/isnm/hdwr_svr/data/HmcNetConfig
BPC 40.6.0.1 -tooltype=lpar -netc=y
-authtok=00F16D49F49205ED7B15322F8E88196C506235B4DA840D532A81CEDB7868B5E3B5CBF59B9
419613766C28BB0ED8F262F827E95CB3BAECDD8C5700F75EA058C5DF158AE26419C6E5255
-authtoklastupdtimestamp=2147483647 -mtms=78AC-100*992003H -slot=A -ignorepwdchg=n
BPC 40.6.0.1 -tooltype=fnm -netc=y
-authtok=00F16D49F49205ED7B15322F8E88196C506235B4DA840D532A81CEDB7868B5E3B5CBF59B9
419613766C28BB0ED8F262F827E95CB3BAECDD8C5700F75EA058C5DF158AE26419C6E5255
-authtoklastupdtimestamp=2147483647 -mtms=78AC-100*992003H -slot=A -ignorepwdchg=n
We use the mkhwconn command to create the hardware connections for the BPA, as shown in
Example 4-16.
Example 4-16 Using mkhwconn to create missing BPA hardware connections
# mkhwconn bpa -t -T lpar
# mkhwconn bpa -t -T fnm
After the hardware connections are created by issuing the mkhwconn commands in
Example 4-16, confirm the BPA configuration as shown in Example 4-17 on page 254.
253
Chapter 4. Troubleshooting problems
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