topic Ping Question in Operating System - HP-UX

Ping Question

Gordon_3 — Fri, 19 Jul 2002 00:26:48 GMT

Hi all,

Anyone know the exact meaning / how to fix below situation when ping a machine get below result? My understanding is the NIC is very busy and that cause below problem? Rigth?

Bgds,
Gordon

Pinging aaa.bbb.com [123.123.123.123] with 32 byte

Reply from 123.123.123.123: Source quench received.
Reply from 123.123.123.123: Source quench received.

Re: Ping Question

Michael Tully — Fri, 19 Jul 2002 00:50:07 GMT

Hi Gordon,

This sounds like the classic case of your
switch and your NIC card out of sync with
the full Vs half duplexing.

Run this to check depending on your card ID

# lanadmin -x lan0
or
# lanadmin -x 0
Current Speed = 100 Full-Duplex Auto-Negotiation-OFF

If there is a mis-match between the two, you can fix it by doing this.

# lanadmin -X 100FD 0 (100 full duplex)

See the man page for lanadmin for more information.
Depending on your particular LAN card you will also need to update the correct /etc/rc.config/hp.... file.

You can also use SAM to do this, SAM will also update the config file.

HTH
Michael

Re: Ping Question

harry_7 — Fri, 19 Jul 2002 00:54:02 GMT

Hi,

So after some time was it okey or not ?? or still the same problem. It seems N/W is very high or you tried to ping immedietely after the server rebooting.

cheers

harry

Re: Ping Question

Patrick Wallek — Fri, 19 Jul 2002 01:48:42 GMT

Have a look at doc ID S3100005739 in the TKB.

Here is the URL to it:
http://itrc.hp.com/service/cki/docDisplay.do?docLocale=en_US&docId=200000049809940

Re: Ping Question

T G Manikandan — Fri, 19 Jul 2002 02:08:20 GMT

Use ndd to stop the ip source quench

#ndd -set /dev/ip ip_send_source_quench 0

to make it permanent edit
file /etc/rc.config.d/nddconf
and enter
TRANSPORT_NAME[0]=ip
NDD_NAME[0]=ip_send_source_quench
NDD_VALUE[0]=0

Thanks

Re: Ping Question

Steven Sim Kok Leong — Fri, 19 Jul 2002 03:16:02 GMT

Hi,

ICMP source quench is sent from the server to the client when the client is sending more data than the server can processed. By feeding back via the ICMP source quench packet, the server tells the client system to slow down its transmission.

This is a good feature to keep traffic load in check. Thus, I won't encourage that this feature be disabled.

Hope this helps. Regards.

Steven Sim Kok Leong

Re: Ping Question

Pete Randall — Fri, 19 Jul 2002 09:54:13 GMT

Gordon,

Since you gave all these answers 10 points, I assume they all were the "magical" answer that solved your problem - true?

Pete