Infrastructure Monitoring : XorMon NG Installation

Network

LAN network monitoring is not implemented yet in XorMon NG, we expect its support later in 2024.
So far you might use STOR2RRD for its monitoring.

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SAN switch access summary

Vendor	Storage type	User role	Interface	Used ports
Brocade	SAN switch	read-only	SNMP v1,2,3	161 UDP
QLogic	SAN switch	read-only	SNMP v1,2,3	161 UDP
Cisco	MDS and Nexus	read-only	SNMP v1,2	161 UDP

Connections are always initiated from XorMon NG server side

Installation procedure is same for Cisco, Brocade and QLogic switches.
Only in case of usage Brocade/QLogic Virtual Fabric you have to do special access configuration.
Cisco VSAN support works automatically.

Brocade note: SNMP v2 is not supported in FOS v9.0.1a but is not blocked. SNMP v2 is blocked beginning with FOS v9.1.0.

Configure access to switches

Allow SNMP communication from XorMon NG host to all SAN switches on port 161, UDP
Brocade SNMPv3 setup

Test SNMP communication from cmd line

Follow that in case connection test does not work only.

# export PATH=$PATH:/opt/freeware/bin
# snmpwalk -v 2c -c public  <Switch_IP> 1.3.6.1.2.1.1.5
  SNMPv2-MIB::sysName.0 = STRING: SAN_switch_name

This must work exactly as above!

  Timeout: No Response from <Switch_IP>

Make sure there is SNMP allowed on the SAN switch with public read only role (Community 4)
- Brocade/QLogic:
```
# ssh <Switch_IP> -l admin
SAN:admin> snmpconfig --show snmpv1 
  ...
  Community 4: public (ro)
  ...
```
  Change community string to whatever you need via "snmpConfig --set snmpv1"
- Cisco:
```
# ssh <Switch_IP> -l admin
switch# show snmp community
  Community Access
  --------- ------
  private rw
  public ro
```
  When there is other community string than public then use it in test snmpwalk cmds above
  and use that community string in switch cfg.
Make sure that Access Host list contains XorMon NG host:
```
SAN:admin> snmpconfig --show accessControl
```

Make sure you have enabled all listed MIBs below:

SAN: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

Enable all missing MIBs each by each::

SAN:admin> snmpconfig --enable mibCapability -mib_name FICON-MIB

set SNMP GET security level to 0

SAN:admin> snmpconfig --show seclevel
SAN: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

Do you have some other switch which works fine, is there any configuration difference?

Brocade/QLogic Virtual Fabric support

you have to use SNMP v3 with proper security user
Configure security user on the switch (under admin account):
```
userconfig --add snmpuser1 -r user -l 1,128
userconfig --change snmpuser1 -r user -l 1,128 -h 128 -e no
```
Parameter -l 1,128 defines virtual fabrics visible for this user.
Parameter -h 128 defines home virtual fabrics.
Parameter -e no disables user expiration
Example above allows virtual fabrics 1 and 128 for user snmpuser1.

Test access, you should see ports configured for your specific VF (Virtual Fabric).

$ snmpwalk -v 3 -u snmpuser1 -n VF:<your_virtual_fabric_ID> <Switch_IP> 1.3.6.1.2.1.1.5
  SNMPv2-MIB::sysName.0 = STRING: SAN_switch_name

If you get one of below errors then user is not configured properly:

Error in packet.
Reason: noAccess
snmpwalk: Unknown user name

Switch configuration

Add switches into configuration from the UI:
XorMon NG UI ➡ Device ➡ Network ➡ SAN switches ➡ New ➡ Vendor:device ...
Run "Test" for configured switch, it must show "OK"
Wait about 1 hour, then refresh the web browser cache by Ctrl-F5
If you use SNMP v3 and have several virtual fabrics then monitoring might cause unwanted CPU peaks every 5 minutes on monitored switches
To decrease such CPU peaks into acceptable level configure SAN microservices like that
- Increase data fetch from default 5 minutes into 10 or 15 minutes
- Increase default timeout between SNMP queries from default 1 sec to 5 secs
Open XorMon NG UI: Settings ➡ Application ➡ select SAN Brocade / Cisco ➡ Advanced icon
SAN troubleshooting