Table of Contents
Advertisement
Chapter 17
Managing FLOGI, Name Server, FDMI, and RSCN Databases
•
Apart from sending these events to registered hosts a switch RSCN (SW-RSCN) is sent to all reachable
switches in the fabric.
The switch sends an RSCN to notify registered nodes that a change has occurred. It is up to the nodes to
query the Name Server again to obtain the new information. The details of the changed information are
not delivered by the switch in the RSCN sent to the nodes.
The SCR table cannot be configured, it is only populated if one or more hosts send SCR frames to
register for RSCN information. If there are no entries in the SCR tables, no host is interested in receiving
RSCN information.
Sending RSCNs
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, you have two disks (D1, D2) and a host (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, you must disable the multi-pid
RSCN option.
Viewing General Attributes for the Name Server
To view general name server attributes from the Device Manager, choose Name Server from the FC
menu. The Name Server dialog box, with the General tab selected, displays name server attributes for a
single switch.
Viewing Advanced Attributes for the Name Server
To monitor advanced name server attributes from the Device Manager, choose Name Server from the
FC menu and click the Advanced tab. The Name Server dialog box, with the Advanced tab selected,
displays advanced name server attributes for a single switch.
Proxy Ports for the Name Server
To configure proxy ports for the name server from Fabric Manager, choose FC > Name Server on the
menu tree and click the Proxies tab. The Information pane from the Fabric Manager displays name server
proxy ports for multiple switches.
OL-7753-01
Or any other similar event that affects the operation of the host
If the multi-pid option is disabled on switch 1, then two RSCNs is generated to Host H--one for the
disk D1 and another for disk D2.
If the multi-pid option is enabled on switch 1, then a single RSCN is generated to host H, and the
RSCN payload lists the affected port IDs (in this case, both D1 and D2).
Viewing General Attributes for the Name Server
Cisco MDS 9000 Fabric Manager Switch Configuration Guide
17-3
Advertisement
Chapters
Table of Contents
Troubleshooting
