lanadmin

[MarkW_1]

Using lanadmin, I am getting a lot of discard errors. What does this error refer too.

LAN INTERFACE STATUS DISPLAY
Mon, Jan 28,2002 12:05:20

PPA Number = 1
Description = lan1 Hewlett-Packard LAN adapter Rev0
Type (value) = ethernet-csmacd(6)
MTU Size = 1500
Speed = 100000000
Station Address = 0x0060b058c81d
Administration Status (value) = up(1)
Operation Status (value) = up(1)
Last Change = 40185
Inbound Octets = 25296750
Inbound Unicast Packets = 41086
Inbound Non-Unicast Packets = 45930
Inbound Discards = 45034
Inbound Errors = 0
Inbound Unknown Protocols = 45038
Outbound Octets = 8097362
Outbound Unicast Packets = 41139
Outbound Non-Unicast Packets = 2
Outbound Discards = 0
Outbound Errors = 0
Outbound Queue Length = 0
Specific = 655367

Press to continue


Ethernet-like Statistics Group

Index = 2
Alignment Errors = 0
FCS Errors = 0
Single Collision Frames = 0
Multiple Collision Frames = 0
SQE Test Errors = 0
Deferred Transmissions = 0
Late Collisions = 0
Excessive Collisions = 0
Internal MAC Transmit Errors = 0
Carrier Sense Errors = 0
Frames Too Long = 0
Internal MAC Receive Errors = 0
Excess Collisions = 0

I am also getting alot of runt errors on the the sending hosts switch port

[Krishna Prasad]

What kind of network card are you using?

Is it capable of full-duplex?


If it is make sure it is set to full-duplex in your /etc/rc.config.d/hpbtlanconf file.

Also, if you are using a V-lan make sure it is set the same on your host side as the port/switch it is connected into.

Not sure if this helps at all?

[MarkW_1]

It is the standard HP eisa card for the hp9000 class d machine. It tops at 100hd. Both the card and switch are set to this

Mark

[harry d brown jr]

Do you have the latest patches installed for whatever OS level you are running on?

Also, are you experiencing any network issues?

live free or die
harry

[harry d brown jr]

Inbound Discards

The number of inbound packets that were discarded even though no errors had been detected, to prevent their being delivered to a higher-layer protocol. One possible reason for discarding such a packet could be to free up buffer space.

http://www.hp.com/workstations/support/archive/manuals/J3622-90007.pdf


live free or die
harry

[MarkW_1]

Harry,

I am printing the doc!

We are not having any obvious issues. This box has not been patched in a while. Here are the patch # that I plan to install.
PHNE_24413,24725,25116,25423.

Mark

[harry d brown jr]

Mark,

That looks like a good start. Did you use the custom patch manager to get that list?

live free or die
harry

[MarkW_1]

I got the list from Sanjay

[Dmitry G. Spitsyn]

It looks like Inbound Discards result from Inbound Unknown Protocols. It means the frames are addressed to unknown higher level protocol.
What encapsulation type is configured on the receiving host's Lan interface ?
Can you check encapsulation type on the sending hosts?
BR,
DGS

[Ron Kinner]

What does netstat -s say? If there are problems with higher protocol buffers you will see them there.

Ron

[rick jones]

inbound discards is (probably) an amalgam of a couple of stats. one is likely a stat for drops within the stack between the driver and higher layers.

the other is likely a stat for discard done by the card because it had nowhere to DMA a newly arrived frame.

given that the NIC in question is an EISA 100BT NIC (?) and that was probably never physically capable of link-rate operation, I could easily believe that data was arriving at the NIC at a rate higher than the NIC could get it into the system.

the upshot is that packets were dropped and will have required retransmitting at their source.