For some reason, I tend to forget about fcstat. This is a very useful command when troubleshooting fiber channel issues.

firmo1# fcstat fcs0

FIBRE CHANNEL STATISTICS REPORT: fcs0

Device Type: FC Adapter (df1000fa)
Serial Number: XXXXX
Option ROM Version: 02881914
Firmware Version: T1D1.90A4
World Wide Node Name: XXX
World Wide Port Name: XXX

FC-4 TYPES:
Supported: 0×0000012000000000000000000000000000000000000000000000000000000000
Active: 0×0000010000000000000000000000000000000000000000000000000000000000
Class of Service: 3
Port Speed (supported): 2 GBIT
Port Speed (running): 2 GBIT
Port FC ID: 0×010E00
Port Type: Fabric

Seconds Since Last Reset: 158286

Transmit Statistics Receive Statistics
——————- ——————
Frames: 80972 247978
Words: 1071104 84101632

LIP Count: 0
NOS Count: 0
Error Frames: 0
Dumped Frames: 0
Link Failure Count: 1
Loss of Sync Count: 5
Loss of Signal: 0
Primitive Seq Protocol Error Count: 0
Invalid Tx Word Count: 12
Invalid CRC Count: 0

IP over FC Adapter Driver Information
No DMA Resource Count: 0
No Adapter Elements Count: 0

FC SCSI Adapter Driver Information
No DMA Resource Count: 0
No Adapter Elements Count: 0
No Command Resource Count: 0

IP over FC Traffic Statistics
Input Requests: 0
Output Requests: 0
Control Requests: 0
Input Bytes: 0
Output Bytes: 0

FC SCSI Traffic Statistics
Input Requests: 4145
Output Requests: 12
Control Requests: 63356
Input Bytes: 330206300
Output Bytes: 49152

Pretty simple stuff, sort of like in Linux where you can run ‘ifconfig eth0:1 x.x.x.x’ and so on. In AIX, you can assign multiple IPs to an interface by using the following command syntax:

mktcpip -h $hostname -a $virtual_ip -m 255.255.255.0 -i $interface

where
$hostname = Your system hostanme, example: testhost
$virtual_ip = IP to assign to interface, example: 10.10.10.3
$interface = Interface you wish to assign the IP to, example: ent0