Merge Process; Configuring Zone Merge Control Policies; Preventing Zones From Flooding Fc2 Buffers; Default Zone Policies - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 24 Configuring and Managing Zones
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
Remove all non-pWWN-type zone entries on all MDS switches running Cisco SAN-OS prior to merging
Caution
fabrics if there is a Cisco MDS 9020 switch running FabricWare in the adjacent fabric.

Merge Process

The merge process operates as follows:
1.
2.
3.

Configuring Zone Merge Control Policies

To configure merge control policies, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# zone merge-control restrict
vsan 4
switch(config)# no zone merge-control
restrict vsan 2
switch(config)# zone commit vsan 4

Preventing Zones From Flooding FC2 Buffers

Use the zone fc2 merge throttle enable command to throttle the merge requests that are sent from zones
to fc2 and prevent zones from flooding fc2 buffers. This command is enabled by default. This command
can be used to prevent any zone merge scalability problem when you have a lot of zones. Use the show
zone status command to view zone merge throttle information.

Default Zone Policies

To permit or deny traffic in the default zone, follow these steps:
Command
Step 1
switch# config t
OL-18084-01, Cisco MDS NX-OS Release 4.x
The software compares the protocol versions. If the protocol versions differ, then the ISL is isolated.
If the protocol versions are the same, then the zone policies are compared. If the zone policies differ,
then the ISL is isolated.
If the zone merge options are the same, then the comparison is implemented based on the merge
control setting.
If the setting is restrict, the active zone set and the full zone set should be identical. Otherwise
a.
the link is isolated.
If the setting is allow, then the merge rules are used to perform the merge.
b.
Purpose
Enters configuration mode.
Configures a restricted merge control setting for
this VSAN.
Defaults to using the allow merge control setting
for this VSAN.
Commits the changes made to VSAN 4.
Purpose
Enters configuration mode.
Cisco MDS 9000 Family CLI Configuration Guide
Enhanced Zoning
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