‘entstat ‘ will show you general Ethernet statistics in AIX. This will also give you link status, and show you the configured port speed/duplex settings.
Below you will see the output from entstat. The two important lines when determining speed and duplex are the ‘Media Speed Selected’ and ‘Media Speed Running’. The selected line displays the configuration of the adapter, whether its set to autonegotiate or configured to a specific setting. The one below is forced to 100/full. The running line will display what the adapter is actually running at. If this card were set to auto, you would see the negotiated speed.

-bash-2.05b$ entstat -d en1
————————————————————-
ETHERNET STATISTICS (en1) :
Device Type: 2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902)
Hardware Address: xxx
Elapsed Time: 7 days 12 hours 47 minutes 48 seconds

Transmit Statistics: Receive Statistics:
——————– ——————-
Packets: 68946739 Packets: 56414525
Bytes: 182351384185 Bytes: 7089209177
Interrupts: 0 Interrupts: 52662037
Transmit Errors: 0 Receive Errors: 0
Packets Dropped: 0 Packets Dropped: 0
Bad Packets: 0
Max Packets on S/W Transmit Queue: 399
S/W Transmit Queue Overflow: 0
Current S/W+H/W Transmit Queue Length: 0

Broadcast Packets: 376 Broadcast Packets: 0
Multicast Packets: 1 Multicast Packets: 0
No Carrier Sense: 0 CRC Errors: 0
DMA Underrun: 0 DMA Overrun: 0
Lost CTS Errors: 0 Alignment Errors: 0
Max Collision Errors: 0 No Resource Errors: 0
Late Collision Errors: 0 Receive Collision Errors: 0
Deferred: 0 Packet Too Short Errors: 0
SQE Test: 0 Packet Too Long Errors: 0
Timeout Errors: 0 Packets Discarded by Adapter: 0
Single Collision Count: 0 Receiver Start Count: 0
Multiple Collision Count: 0
Current HW Transmit Queue Length: 0

General Statistics:
——————-
No mbuf Errors: 0
Adapter Reset Count: 0
Adapter Data Rate: 200
Driver Flags: Up Broadcast Running
Simplex 64BitSupport ChecksumOffload
PrivateSegment LargeSend DataRateSet

2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902) Specific Statistics:
————————————————————————
Link Status : Up
Media Speed Selected: 100 Mbps Full Duplex
Media Speed Running: 100 Mbps Full Duplex
PCI Mode: PCI-X (100-133)
PCI Bus Width: 64-bit
Latency Timer: 144
Cache Line Size: 128
Jumbo Frames: Disabled
TCP Segmentation Offload: Enabled
TCP Segmentation Offload Packets Transmitted: 2893566
TCP Segmentation Offload Packet Errors: 0
Transmit and Receive Flow Control Status: Disabled
Transmit and Receive Flow Control Threshold (High): 45056
Transmit and Receive Flow Control Threshold (Low): 24576
Transmit and Receive Storage Allocation (TX/RX): 16/48

The Ethernet failover configuration basically combines two physical adapters into one virtual adapter. If you have one link fail, the traffic will failover automatically to the second running adapter. The output below is a failover adapter, en4. This is configured using ent0 and ent2. The speed and duplex are set per adapter, prior to configuring the failover adapter.

Here’s an example of an ‘Etherchannel’ failover configuration:

-bash-2.05b$ entstat -d en4
————————————————————-
ETHERNET STATISTICS (en4) :
Device Type: EtherChannel
Hardware Address: xxxx
Elapsed Time: 7 days 12 hours 51 minutes 19 seconds

Transmit Statistics: Receive Statistics:
——————– ——————-
Packets: 279573147 Packets: 285159987
Bytes: 118141661339 Bytes: 64784751636
Interrupts: 0 Interrupts: 268857629
Transmit Errors: 0 Receive Errors: 0
Packets Dropped: 0 Packets Dropped: 0
Bad Packets: 0
Max Packets on S/W Transmit Queue: 84
S/W Transmit Queue Overflow: 0
Current S/W+H/W Transmit Queue Length: 2

Elapsed Time: 0 days 0 hours 0 minutes 0 seconds
Broadcast Packets: 55 Broadcast Packets: 1135188
Multicast Packets: 1 Multicast Packets: 0
No Carrier Sense: 0 CRC Errors: 0
DMA Underrun: 0 DMA Overrun: 0
Lost CTS Errors: 0 Alignment Errors: 0
Max Collision Errors: 0 No Resource Errors: 0
Late Collision Errors: 0 Receive Collision Errors: 0
Deferred: 0 Packet Too Short Errors: 0
SQE Test: 0 Packet Too Long Errors: 0
Timeout Errors: 0 Packets Discarded by Adapter: 0
Single Collision Count: 0 Receiver Start Count: 0
Multiple Collision Count: 0
Current HW Transmit Queue Length: 2

General Statistics:
——————-
No mbuf Errors: 0
Adapter Reset Count: 0
Adapter Data Rate: 200
Driver Flags: Up Broadcast Running
Simplex 64BitSupport ChecksumOffload
PrivateSegment LargeSend DataRateSet

=============================================================
=============================================================

Statistics for every adapter in the EtherChannel:
————————————————-

Number of adapters: 2
Active channel: primary channel
Operating mode: Network interface backup mode

————————————————————-

ETHERNET STATISTICS (ent0) :
Device Type: 2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902)
Hardware Address: xxxx

Transmit Statistics: Receive Statistics:
——————– ——————-
Packets: 279573211 Packets: 284507186
Bytes: 118141675002 Bytes: 64731620778
Interrupts: 0 Interrupts: 268350807
Transmit Errors: 0 Receive Errors: 0
Packets Dropped: 0 Packets Dropped: 0
Bad Packets: 0
Max Packets on S/W Transmit Queue: 83
S/W Transmit Queue Overflow: 0
Current S/W+H/W Transmit Queue Length: 1

Broadcast Packets: 55 Broadcast Packets: 567594
Multicast Packets: 1 Multicast Packets: 0
No Carrier Sense: 0 CRC Errors: 0
DMA Underrun: 0 DMA Overrun: 0
Lost CTS Errors: 0 Alignment Errors: 0
Max Collision Errors: 0 No Resource Errors: 0
Late Collision Errors: 0 Receive Collision Errors: 0
Deferred: 0 Packet Too Short Errors: 0
SQE Test: 0 Packet Too Long Errors: 0
Timeout Errors: 0 Packets Discarded by Adapter: 0
Single Collision Count: 0 Receiver Start Count: 0
Multiple Collision Count: 0
Current HW Transmit Queue Length: 1

General Statistics:
——————-
No mbuf Errors: 0
Adapter Reset Count: 1
Adapter Data Rate: 200
Driver Flags: Up Broadcast Running
Simplex 64BitSupport ChecksumOffload
PrivateSegment LargeSend DataRateSet

2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902) Specific Statistics:
————————————————————————
Link Status : Up
Media Speed Selected: 100 Mbps Full Duplex
Media Speed Running: 100 Mbps Full Duplex
PCI Mode: PCI-X (100-133)
PCI Bus Width: 64-bit
Latency Timer: 144
Cache Line Size: 128
Jumbo Frames: Disabled
TCP Segmentation Offload: Enabled
TCP Segmentation Offload Packets Transmitted: 2709970
TCP Segmentation Offload Packet Errors: 0
Transmit and Receive Flow Control Status: Disabled
Transmit and Receive Flow Control Threshold (High): 45056
Transmit and Receive Flow Control Threshold (Low): 24576
Transmit and Receive Storage Allocation (TX/RX): 16/48

————————————————————-
Backup adapter - ent2:
======================

ETHERNET STATISTICS (ent2) :
Device Type: 2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902)
Hardware Address: xxxx

Transmit Statistics: Receive Statistics:
——————– ——————-
Packets: 0 Packets: 652845
Bytes: 0 Bytes: 53137302
Interrupts: 0 Interrupts: 506852
Transmit Errors: 0 Receive Errors: 0
Packets Dropped: 0 Packets Dropped: 0
Bad Packets: 0
Max Packets on S/W Transmit Queue: 1
S/W Transmit Queue Overflow: 0
Current S/W+H/W Transmit Queue Length: 1

Broadcast Packets: 0 Broadcast Packets: 567594
Multicast Packets: 0 Multicast Packets: 0
No Carrier Sense: 0 CRC Errors: 0
DMA Underrun: 0 DMA Overrun: 0
Lost CTS Errors: 0 Alignment Errors: 0
Max Collision Errors: 0 No Resource Errors: 0
Late Collision Errors: 0 Receive Collision Errors: 0
Deferred: 0 Packet Too Short Errors: 0
SQE Test: 0 Packet Too Long Errors: 0
Timeout Errors: 0 Packets Discarded by Adapter: 0
Single Collision Count: 0 Receiver Start Count: 0
Multiple Collision Count: 0
Current HW Transmit Queue Length: 1

General Statistics:
——————-
No mbuf Errors: 0
Adapter Reset Count: 1
Adapter Data Rate: 200
Driver Flags: Up Broadcast Running
Simplex 64BitSupport ChecksumOffload
PrivateSegment LargeSend DataRateSet

2-Port 10/100/1000 Base-TX PCI-X Adapter (14108902) Specific Statistics:
————————————————————————
Link Status : Up
Media Speed Selected: 100 Mbps Full Duplex
Media Speed Running: 100 Mbps Full Duplex
PCI Mode: PCI-X (100-133)
PCI Bus Width: 64-bit
Latency Timer: 144
Cache Line Size: 128
Jumbo Frames: Disabled
TCP Segmentation Offload: Enabled
TCP Segmentation Offload Packets Transmitted: 0
TCP Segmentation Offload Packet Errors: 0
Transmit and Receive Flow Control Status: Disabled
Transmit and Receive Flow Control Threshold (High): 45056
Transmit and Receive Flow Control Threshold (Low): 24576
Transmit and Receive Storage Allocation (TX/RX): 16/48

This entry was posted on Wednesday, January 23rd, 2008 and is filed under AIX 5.3, AIX 6.1. You can follow any responses to this entry through the RSS 2.0 feed. You can leave a response, or trackback from your own site.