Cisco MDS 9000 Series Configuration Guide

Results of the MergeMerge StatusAdjacent
Database
Local Database
ISLs are isolated.Failed.The databases contains a zone, zone alias,
or zone attribute group object with same
name 1 but different members.
.In the enhanced zoning mode,
the active zoneset does not have
a name in interop mode 1. The
zoneset names are only present
for full zone sets.
Note
The adjacent database
information populates
the local database.
Successful.Contains data.Empty.
The local database
information populates
the adjacent database.
Successful.Empty.Contains data.
1
In the enhanced zoning mode, the active zoneset does not have a name in interop mode 1. The zoneset
names are only present for full zone sets.
Remove all non-PWWN-type zone entries on all MDS switches running Cisco SAN-OS prior to merging
fabrics if there is a Cisco MDS 9020 switch running FabricWare in the adjacent fabric.
Caution
Merge Process
When two Fibre Channel (FC) switches that have already been configured with active zonesets and are not
yet connected are brought together with an Extended ISL (EISL) link, the zonesets merge. However, steps
must be taken to ensure zone consistency before configuring and activating new zones.
Best Practices
When a zone merge occurs, as long as there is not competing information, each switch learns the others zones.
Each switch then has three configuration entities. The switches have:
• The saved configuration in NVRAM. This is the configuration as it was the last time the copy
running-configuration startup-configuration command was issued.
• The running configuration. This represents the configuration brought into memory upon the last time the
MDS was brought up, plus any changes that have been made to the configuration. With reference to the
zoning information, the running configuration represents the configurable database, known as the full
database.
• The configured zoning information from the running configuration plus the zoning information learned
from the zone merge. This combination of configured and learned zone information is the active zoneset.
The merge process operates as follows:
1. The software compares the protocol versions. If the protocol versions differ, then the ISL is isolated.
Cisco MDS 9000 Series Fabric Configuration Guide, Release 8.x
118
Configuring and Managing Zones
Merge Process

Cisco MDS 9000 Series Specifications

General

Category	Switch
Operating System	Cisco NX-OS
Ports	Varies by model
Protocols	Fibre Channel (FC), Fibre Channel over IP (FCIP), iSCSI
Redundancy	Redundant supervisors, power supplies, and fans
Management	Cisco Data Center Network Manager (DCNM), CLI, SNMP
Virtualization Support	VSANs (Virtual SANs)
Security Features	Fibre Channel Security Protocol (FC-SP)
Hot Swappable Components	power supplies, fans
Power Supply Options	AC and DC options available