Chapter 1. IBM Flex System FC3171 8 Gb SAN Switch - QLogic

Chapter 3. Managing fabrics
This chapter describes the following fabric topics:
• Fabric services
• Rediscovering a fabric
• Event Browser
• Device information and nicknames
• Zoning
Fabric services
Rediscovering a fabric
Fabric services include Simple Network Management Protocol (SNMP) and in-band
management. SNMP is the protocol governing network management and
monitoring of network devices. SNMP security consists of a read community string
and a write community string, which are the passwords that control read and write
access to the switch. The read community string ("public") and write community
string ("private") are set at the factory to these well-known defaults and should be
changed if SNMP is enabled. If SNMP is enabled (default) and the read and write
community strings have not been changed from their defaults, you risk unwanted
access to the switch.
In-band management is the ability to manage switches across inter-switch links
using QuickTools, SNMP, management server, or the application programming
interface. The switch comes from the factory with in-band management enabled. If
you disable in-band management on a particular switch, you can no longer
communicate with that switch by means other than a direct Ethernet or serial
connection.
To enable in-band management, do the following:
1. Open the Switch menu and select Switch Properties to open the Switch
Properties dialog.
2. Click the In-band Management Enable option.
3. Click the OK button to save the change to the database.
After making changes to or deleting switches from a fabric view, it may be helpful
to view the actual fabric configuration again. The rediscover fabric option clears out
the current fabric information being displayed, and rediscovers all switch
information. To rediscover a fabric, open the Fabric menu, and select Rediscover
Fabric. The rediscover function is more comprehensive than the refresh function.
© Copyright IBM Corp. 2012 15