How To Configure A Port Monitor; Port Monitoring; Enabling Port Monitor - Cisco Nexus 5000 Series Configuration Manual

Fibre Channel Slow Drain Device Detection and Congestion Avoidance- An Overview

How to Configure a Port Monitor

Port Monitoring

You can use port monitoring to monitor the performance of fabric devices and to detect slow drain devices.
You can monitor counters and take the necessary action depending on whether the portguard is enabled or
disabled. You can configure the thresholds for various counters and trigger an event when the values cross
the threshold settings. Port monitoring provides a user interface that you can use to configure the thresholds
and action. By default, portguard is disabled in the port monitoring policy.
Two default policies, default and default slowdrain, are created during snmpd initialization. The default
slowdrain policy is activated when the switch comes online when no other policies are active at that time. The
default slowdrain policy monitors only credit-loss-reco and tx-credit-not-available counters.
When you create a policy, it is created for both access and trunk links. The access link has a value of F and
the trunk link has a value of E.

Enabling Port Monitor

SUMMARY STEPS
1. switch# configure terminal
2. switch(config)# [no] port-monitor enable
DETAILED STEPS
Command or Action
Step 1
switch# configure terminal
Step 2
switch(config)# [no] port-monitor enable
OL-27583-01
Purpose
Enters global configuration mode.
Enables (default) the port monitoring feature. The no version of
this command disables the port monitoring feature.
Cisco Nexus 5000 Series NX-OS SAN Switching Configuration Guide, Release 5.2(1)N1(1)
How to Configure a Port Monitor
299