Re: Gigabit Ethernet

From: Basim Chafik (basimc@INVERA.COM)
Date: Fri Jul 12 2002 - 10:15:06 EDT


Bill,

I've seen weird problem before if any adapter, and necessarily gigabit
adapter, is installed in the right slot. Check/recheck your S7A H/W guid.

Basim Chafik

Senior Technology Consultant
IBM Certified Advanced Technical Expert - RS/6000 AIX
Invera Inc.

-----Original Message-----
From: Bill Thompson [mailto:bill.thompson@GOODYEAR.COM]
Sent: Friday, July 12, 2002 10:06 AM
To: aix-l@Princeton.EDU
Subject: Gigabit Ethernet

Admins,

I know a number of you are using Gigabit Ethernet adapters in your
RS/6000's. Hopefully you can help me with mine.

I've installed the adapter in an S7A (AIX 4.3.3), installed the appropriate
drivers, and rebooted the machine.

DRIVER INFORMATION
>lslpp -L 'devices.pci.14100401.*'
  Fileset Level State Description

----------------------------------------------------------------------------
  devices.pci.14100401.diag
                            4.3.3.50 C Gigabit Ethernet-SX PCI
Adapter
                                             Diagnostics
  devices.pci.14100401.rte 4.3.3.75 C Gigabit Ethernet-SX PCI
Adapter
                                             Software

HARDWARE INFORMATION
>lsdev -Cc adapter -l ent5
ent5 Available 20-58 Gigabit Ethernet-SX PCI Adapter (14100401)

lsdev shows the adapter (ent5) however, there is no corresponding en5 entry
in the ODM but I am able to access en5 from system command. For example, I
was able to configure en5 with the ifconfig command:

> ifconfig en5
en5:
flags=7e080863,10<UP,BROADCAST,NOTRAILERS,RUNNING,SIMPLEX,MULTICAST,GROUPRT,
64BIT,CHECKSUM_OFFLOAD,CHECKSUM_SUPPORT,PSEG>
        inet 10.100.92.200 netmask 0xffffff00 broadcast 10.100.92.255

I see a link light on the back of the card, but I'm unable to access the
outside world. I've had our Telecom department diagnose their end of the
connection. They monitored the switch port the adapter is connected to and
said the adapter was not broadcasting it's MAC address. The also put a
light meter on the fibre connection and found a 6.75 db loss from the
switch to the adapter and a 8.95 db loss from the adapter to the switch.
Both are under 9.5 db which is supposed to be an acceptable loss.

I ran diagnostics on the adapter and no trouble was found.

Some other information:

NETSTAT
> netstat -in | egrep '^Name|^en5'
Name Mtu Network Address Ipkts Ierrs Opkts Oerrs Coll
en5 1500 link#8 0.2.55.9a.99.7b 73 0 1 0
0
en5 1500 10.100.92 10.100.92.200

LSATTR
-> lsattr -El ent5
busmem 0x8fefc000 Bus memory address
False
busintr 19 Bus interrupt level
False
intr_priority 3 Interrupt priority
False
rx_que_size 512 Receive queue size
False
tx_que_size 8192 Software transmit queue size
True
jumbo_frames no Transmit jumbo frames
True
media_speed Auto_Negotiation Media Speed (10/100/1000 Base-T Ethernet)
True
use_alt_addr no Enable alternate ethernet address
True
alt_addr 0x000000000000 Alternate ethernet address
True
trace_flag 0 Adapter firmware debug trace flag
True
copy_bytes 2048 Copy packet if this many or less bytes
True
tx_done_ticks 1000000 Clock ticks before TX done interrupt
True
tx_done_count 64 TX buffers used before TX done interrupt
True
receive_ticks 50 Clock ticks before RX interrupt
True
receive_bds 6 RX packets before RX interrupt
True
receive_proc 16 RX buffers before adapter updated
True
rxdesc_count 1000 RX buffers processed per RX interrupt
True
stat_ticks 1000000 Clock ticks before statistics updated
True
rx_checksum yes Enable hardware receive checksum
True
flow_ctrl yes Enable Transmit and Receive Flow Control
True
slih_hog 10 Interrupt events processed per interrupt
True

(note: our switch does not support jumbo frames)

ENTSTAT
> entstat en5
-------------------------------------------------------------
ETHERNET STATISTICS (en5) :
Device Type: Gigabit Ethernet-SX PCI Adapter (14100401)
Hardware Address: 00:02:55:9a:99:7b
Elapsed Time: 0 days 0 hours 3 minutes 32 seconds

Transmit Statistics: Receive Statistics:
-------------------- -------------------
Packets: 1 Packets: 89
Bytes: 60 Bytes: 8975
Interrupts: 1 Interrupts: 82
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: 0

Broadcast Packets: 1 Broadcast Packets: 89
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: 0

General Statistics:
-------------------
No mbuf Errors: 0
Adapter Reset Count: 0
Adapter Data Rate: 2000
Driver Flags: Up Broadcast Running
        Simplex AlternateAddress 64BitSupport
        ChecksumTCP ChecksumOffload PrivateSegment

ROUTE INFORMATION
> netstat -rn | grep 10.100.92
10.100.92/24 10.100.92.200 U 0 0 en5 - -

Sorry for the length of the post but I wanted to supply all the information
I could.

If anyone has any suggestions on how to get this adapter to work it would
really be appreciated.

Also, does anyone know why en5 would not be in the ODM?

TIA

Bill Thompson
Sr UNIX Systems Administrator
The Goodyear Tire & Rubber Co.

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