Enabling In-Order Delivery; Configuring Flow Statistics; Viewing Fspf Statistics; Default Settings - Cisco DS-C9216I-K9 Configuration Manual

Configuring Flow Statistics

Enabling In-Order Delivery

By default, in-order delivery is disabled on switches in the Cisco MDS 9000 Family.
We recommend that you only enable this feature in a switch when devices are present in the switch that
Tip
cannot handle any out-of-order frames. Load-balancing algorithms within the Cisco MDS 9000 Family
ensure that frames are delivered in order during normal fabric operation. The load-balancing algorithms
based on source FC ID, destination FC ID, and exchange ID are enforced in hardware without any
performance degradation. However, if the fabric encounters a failure and this feature is enabled, the
recovery will be delayed due to an intentional pausing of fabric forwarding to purge the fabric of resident
frames that could potentially be forwarded out of order.
Configuring Flow Statistics
Flow statistics count the ingress traffic in the aggregated statistics table. You can collect two kinds of
statistics:
•
•
If you enable flow counters, you can enable a maximum of 1K entries for aggregate flow and flow
statistics. Be sure to assign an unused flow index to a module for each new flow. Flow indexes can be
repeated across modules. The number space for flow index is shared between the aggregate flow
statistics and the flow statistics.

Viewing FSPF Statistics

To monitor FSPF statistics from the Fabric Manager, choose FC > FSPF on the menu tree and click the
Statistics tab.
To monitor FSPF statistics from the Device Manager, choose FC > FSPF and click the Statistics tab.

Default Settings

Table 21-4
Table 21-4
Parameters
FSPF
SPF computation
SPF hold time
Backbone region
Acknowledgement interval (RxmtInterval)
Refresh time (LSRefreshTime)
Cisco MDS 9000 Fabric Manager Switch Configuration Guide
21-10
Aggregated flow statistics to count the traffic for a VSAN
Flow statistics to count the traffic for a source and destination ID pair in a VSAN
lists the default settings for FSPF features.
Default FSPF Settings
Chapter 21 Configuring Fibre Channel Routing Services and Protocols
Default
Enabled on all E ports and TE ports.
Dynamic.
0.
0.
5 seconds.
30 minutes.
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