Multi-Pid Option; Configuring The Multi-Pid Option - Cisco Nexus 5000 Series Configuration Manual

Managing FLOGI, Name Server, FDMI, and RSCN Databases
The SCR table is not configurable. It is populated when hosts send SCR frames with RSCN information.
Note
If hosts do not receive RSCN information, then the show rscn scr-table command will not return entries.

Multi-pid Option

If the RSCN multi-pid option is enabled, RSCNs generated to the registered Nx ports might 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, 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, one of the following
actions applies:
• The multi-pid option is disabled on switch 1— Two RSCNs are generated to host H: one for the disk
• The multi-pid option is enabled on switch 1—A single RSCN is generated to host H, and the RSCN
Some Nx ports may not support multi-pid RSCN payloads. If so, disable the RSCN multi-pid option.
Note

Configuring the multi-pid Option

You can configure the multi-pid option.
SUMMARY STEPS
1. configure terminal
2. rscn multi-pid vsan vsan-id
DETAILED STEPS
Command or Action
Step 1
configure terminal
Example:
switch# configure terminal
switch(config)#
Step 2 rscn multi-pid vsan vsan-id
Example:
switch(config)# rscn multi-pid vsan 405
OL-27583-01
D1 and another for disk D2.
payload lists the affected port IDs (in this case, both D1 and D2).
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide, Release 5.2(1)N1(1)
Purpose
Enters global configuration mode.
Sends RSCNs in a multi-pid format for the specified
VSAN.
RSCN
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