Configuring A Port Monitor; Enabling A Port Monitor - Cisco MDS 9000 Series Configuration Manual

Configuring a Port Monitor

Tip
• Link down is the superset of all other causes. A port is brought to down state if the total number
• Even if the link does not flap due to failure of the link, and portguard is not enabled, the port
Configuring a Port Monitor
Configuring a portguard action is optional for each counter in a port monitor policy, and is disabled by default.

Enabling a Port Monitor

To enable or disable a port monitor, perform these steps:
Step 1 Enter configuration mode:
switch# configure terminal
Step 2 Enable port monitoring:
switch(config)# port-monitor enable
(Optional) Disable port monitoring:
switch(config)# no port-monitor enable
Cisco MDS 9000 Series Interfaces Configuration Guide, Release 8.x
52
Receive data field Size is 2112
Beacon is turned off
Logical type is core
Belongs to port-channel2
Trunk vsans (admin allowed and active) (1-2,5)
Trunk vsans (up)
Trunk vsans (isolated)
Trunk vsans (initializing)
5 minutes input rate 448 bits/sec,56 bytes/sec, 0 frames/sec
5 minutes output rate 384 bits/sec,48 bytes/sec, 0 frames/sec
783328 frames input,58490580 bytes
0 discards,0 errors
0 invalid CRC/FCS,0 unknown class
0 too long,0 too short
783799 frames output,51234876 bytes
0 discards,0 errors
56 input OLS,63 LRR,8 NOS,277 loop inits
49 output OLS,27 LRR, 49 NOS, 43 loop inits
500 receive B2B credit remaining
500 transmit B2B credit remaining
500 low priority transmit B2B credit remaining
Last clearing of "show interface" counters :
of other causes equals to the number of allowed link-down failures.
goes into a down state if too many invalid FLOGI requests are received from the same host.
Use the shut and the no shut commands consecutively to bring up the link.
(1-2)
(5)
()
never
Configuring Interfaces