Database Merge Guidelines; World Wide Names - Cisco AP775A - Nexus Converged Network Switch 5010 Configuration Manual

Chapter 37 Advanced Features and Concepts
S e n d d o c u m e n t a t i o n c o m m e n t s t o m d s f e e d b a c k - d o c @ c i s c o . c o m
Click Apply to save these changes.
Step 3
Select commit from the CFS drop-down menu to distribute these changes or select abort from the CFS
Step 4
drop-down menu to discard any unsaved changes.
When you commit the fctimer configuration changes, the effective database is overwritten by the
configuration changes in the pending database and all the switches in the fabric receive the same
configuration. When you commit the fctimer configuration changes without implementing the session
feature, the fctimer configurations are distributed to all the switches in the physical fabric.

Database Merge Guidelines

See the
When merging two fabrics, follow these guidelines:
•
•
Note The number of pending fctimer configuration operations cannot be more than 15. At that point, you must
commit or abort the pending configurations before performing any more operations.

World Wide Names

The world wide name (WWN) in the switch is equivalent to the Ethernet MAC address. As with the MAC
address, you must uniquely associate the WWN to a single device. The principal switch selection and
the allocation of domain IDs rely on the WWN. The WWN manager, a process-level manager residing
on the switch's supervisor module, assigns WWNs to each switch.
Cisco MDS 9000 Family switches support three network address authority (NAA) address formats (see
Table
Table 37-1
NAA Address
IEEE 48-bit address
IEEE extended
IEEE registered
OL-17256-03, Cisco MDS NX-OS Release 4.x
"CFS Merge Support" section on page 13-9
Be aware of the following merge conditions:
– The merge protocol is not implemented for distribution of the fctimer values—you must
manually merge the fctimer values when a fabric is merged.The per-VSAN fctimer
configuration is distributed in the physical fabric.
The fctimer configuration is only applied to those switches containing the VSAN with a
–
modified fctimer value.
The global fctimer values are not distributed.
–
Do not configure global timer values when distribution is enabled.
37-1).
Standardized NAA WWN Formats
NAA Type
Type 1 = 0001b
Type 2 = 0010b
Type 5 = 0101b
for detailed concepts.
WWN Format
000 0000 0000b
Locally assigned
IEEE company ID: 24 bits
Cisco MDS 9000 Family Fabric Manager Configuration Guide
World Wide Names
48-bit MAC address
48-bit MAC address
VSID: 36 bits
37-5