About The Multi-Pid Option; Configuring The Multi-Pid Option; Suppressing Domain Format Sw-Rscns - Cisco AP776A - Nexus Converged Network Switch 5020 Configuration Manual

Chapter 27 Managing FLOGI, Name Server, FDMI, and RSCN Databases
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
Number of RSCN received
Number of RSCN sent
Number of RSCN ACC received
Number of RSCN ACC sent
Number of RSCN RJT received
Number of RSCN RJT sent
Number of SW-RSCN received
Number of SW-RSCN sent
Number of SW-RSCN ACC received = 15
Number of SW-RSCN ACC sent
Number of SW-RSCN RJT received = 0
Number of SW-RSCN RJT sent

About the multi-pid Option

If the RSCN multi-pid option is enabled, then RSCNs generated to the registered Nx ports may contain
more than one affected port IDs. In this case, zoning rules are applied before putting the multiple affected
port IDs together in a single RSCN. By enabling this option, you can reduce the number of RSCNs. For
example: Suppose you have two disks (D1, D2) and a host (H) connected to switch 1. Host H is registered
to receive RSCNs. D1, D2 and H belong to the same zone. If disks D1 and D2 are online at the same
time, then one of the following applies:
•
•
Some Nx ports may not understand multi-pid RSCN payloads. If so, disable the RSCN multi-pid option.
Note

Configuring the multi-pid Option

To configure the multi-pid option, follow these steps:
Command
Step 1
switch# config t
switch(config)#
Step 2
switch(config)# rscn multi-pid vsan 105

Suppressing Domain Format SW-RSCNs

A domain format SW-RSCN is sent whenever the local switch name or the local switch management IP
address changes. This SW-RSCN is sent to all other domains and switches over the ISLs. The remote
switches can issue GMAL and GIELN commands to the switch that initiated the domain format
SW-RSCN to determine what changed. Domain format SW-RSCNs can cause problems with some
non-Cisco MDS switches (refer to the
Configuration
OL-18084-01, Cisco MDS NX-OS Release 4.x
The multi-pid option is disabled on switch 1: two RSCNs are generated to host H—one for the disk
D1 and another for disk D2.
The multi-pid option is enabled on switch 1: a single RSCN is generated to host H, and the RSCN
payload lists the affected port IDs (in this case, both D1 and D2).
Guide).
= 0
= 24
= 24
= 0
= 0
= 0
= 6
= 15
= 6
= 0
Purpose
Enters configuration mode.
Sends RSCNs in a multi-pid format for VSAN 105.
Cisco MDS 9000 Family Switch-to-Switch Interoperability
Cisco MDS 9000 Family CLI Configuration Guide
RSCN
27-9