SAN monitoring: troubleshooting

Installation

SAN monitoring: troubleshooting

SNMP mibCapability is turned off during some FOS upgrade. Most specially FCIP-MIB, enable it after the upgrade:
```
SAN1:admin> snmpconfig --enable mibCapability -mib_name FCIP-MIB
```

General troubleshooting for Brocade based switches when connection test does not work:

make sure there open port 161 UDP to the switch, on the STOR2RRD server run:

$ perl /home/stor2rrd/stor2rrd/bin/conntest_udp.pl 192.168.1.1 161
  UDP connection to "192.168.1.1" on port "161" is ok

Brocade note: SNMPv2 is not supported in FOS v9.0.1a but is not blocked. SNMPv2 will be blocked beginning with FOS v9.1.0.
make sure that stor2rrd host/IP is on the switch access list
```
SAN1:admin> snmpconfig --show accessControl
```

make sure that there are allowed these mibs at least on the switch

SAN1:admin> snmpconfig --show mibCapability
  FE-MIB: YES
  SW-MIB: YES
  FA-MIB: YES
  FICON-MIB: YES
  HA-MIB: YES
  FCIP-MIB: YES
  ISCSI-MIB: YES
  IF-MIB: YES
  BD-MIB: YES
  BROCADE-MAPS-MIB: YES
  ...

Activate missing MIBs like below:

SAN1:admin> snmpconfig --enable mibCapability -mib_name FICON-MIB
SAN1:admin> snmpconfig --enable mibCapability -mib_name HA-MIB
SAN1:admin> snmpconfig --enable mibCapability -mib_name FCIP-MIB
SAN1:admin> snmpconfig --enable mibCapability -mib_name ISCSI-MIB
SAN1:admin> snmpconfig --enable mibCapability -mib_name BD-MIB
...

make sure it works from stor2rrd server:

$ /opt/freeware/bin/snmpwalk -v 1 -c public <Switch IP/hostname> 1.3.6.1.2.1.75.1.1.1
  SNMPv2-SMI::mib-2.75.1.1.1.0 = Hex-STRING: 10 00 00 27 F8 6E 88 CD

make sure community string is proper for v1 and v2c
```
SAN1:admin> snmpconfig --show snmpv1
```

set SNMP GET security level to 0

SAN1:admin> snmpconfig --set seclevel
  Select SNMP GET Security Level
  (0 = No security, 1 = Authentication only, 2 = Authentication and Privacy, 3 = No Access): (0..3) [3] 0

Note a potential CPU issue on switches when you use vFabric support.

In case you find below error during initial configuration then follow this page

$ cd /home/stor2rrd/stor2rrd/logs
$ tail -1 err.log-<Switch IP>
  Can't load '/opt/freeware/lib/perl5/vendor_perl/5.8.8/ppc-thread-multi/auto/NetSNMP/default_store/default_store.so' for module NetSNMP::default_store:
  Could not load module /opt/freeware/lib/libnetsnmp.a(libnetsnmp.so.25).
  Dependent module /usr/lib/libcrypto.a(libcrypto.so.1.0.1) could not be loaded.
  Member libcrypto.so.1.0.1 is not found in archive

STOR2RRD presents bad health status even if the switch is fine
```
# snmpwalk -v 2c -c public <Switch IP/hostname> 1.3.6.1.3.94.1.6.1.6
SNMPv2-SMI::experimental.94.1.6.1.6.16.0.136.148.113.64.127.199.0.0.0.0.0.0.0.0 = INTEGER: 5
```
It should return "3".
HPE support adviced to do hareboot and it helped, now it returns "3" what means that it is ok. More information
Check our forum or contact us via support@stor2rrd.com