IBM TotalStorage SAN140M, Installation And Service Manual

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51 Chapter 2: Installation tasks
path PFE keys must be installed ( Install PFE keys (optional) on
page 47). Features include:
•
OpenTrunking -
Use the OpenTrunking View to optimize ISL
bandwidth. The feature monitors data rates (congestion and
BB_Credit starvation) through multiple ISLs and load balances
traffic (from congested to uncongested links) accordingly.
• Preferred path - Use the Preferred Path View to specify and
configure one or more ISL data paths between multiple fabric
elements. At each fabric element, a preferred path consists of a
source port, exit port, and destination Domain_ID.
• Port fencing - Use the Port Fencing View to minimize ISLs that
bounce (repeatedly attempt to establish a connection), causing
disruptive fabric rebuilds. Fencing defines a bounce threshold
that when reached, automatically blocks the disruptive E_Port.
To configure optional ISL performance features, refer to the EFCM
Basic Edition User Manual (620-000240) for instructions.
If no additional options or features are to be configured, go to Task 20:
Cable Fibre Channel ports .
Task 5: Configure director network information (optional)
The director is delivered with default network addresses as follows:
• MAC address - The media access control (MAC) address is
programmed into FLASH memory on the control processor (CTP)
card at manufacture. The MAC address is unique for each
product and should not be changed.
• IP address - The default IP address is 10.1.1.10. If multiple
products are installed on the same LAN, each product (and the
management server) must have a unique IP address.
NOTE: If multiple products and the management server are delivered in
an equipment cabinet, all devices are configured with unique IP
addresses that do not require change. The addresses require change only
if multiple cabinets are LAN-connected.
• Subnet mask - The default subnet mask is 255.0.0.0. If the director
is installed on a complex public LAN with one or more routers,
the address may require change.