Source Quench

[Ron Kinner]

My HP admin guys just upgraded one of their servers to 11.0. The thing has three NIC cards and everything seems to be working fine except that OpenView reports one of the interfaces is down.

When I ping the interface from the router I get a constant string of source quenches. However, I can telnet to the thing on the bad interface and ping out from it and it works fine.

lanadmin looks good. netstat -s admits that we are sending out a lot of source quenches but doesn't show any problems.
netstat -a does not show anything in queue and top shows the system (a two processor thing) loafing at very small load so why is it sending out source quenches?

I know I can turn them off with NDD with:
ndd -set /dev/ip ip_send_source_quench 0
and edit
/etc/rc.config.d/nddconf
and add
TRANSPORT_NAME[0]=ip
NDD_NAME[0]=ip_send_source_quench NDD_VALUE[0]=0

but I would prefer to fix the problem rather than hide the symptom. Is there a patch they need? Or a new driver or some config change?
[rkinner@flapims2]/home/rkinner% ioscan -nkfClan
Class I H/W Path Driver S/W State H/W Type Description
========================================================================
lan 1 8/0/1/0 btlan4 CLAIMED INTERFACE HP J3516A#001 HSC 10
/100Base-TX D-Class 2 port
lan 2 8/0/2/0 btlan4 CLAIMED INTERFACE HP J3516A#001 HSC 10
/100Base-TX D-Class 2 port
lan 0 8/16/6 lan2 CLAIMED INTERFACE Built-in LAN
[rkinner@flapims2]/home/rkinner% swlist -l product |grep -i lan

Glance C.03.35.00 HP GlancePlus/UX
Networking B.11.00 HP-UX_10.0_Lanlink_Product
PHKL_17036 1.0 Core LAN HPUX driver for V class only.
PHNE_19754 1.0 LAN product cumulative patch
PHNE_22461 1.0 HSC 100BT lan cumulative patch
PHNE_22962 1.0 LAN product cumulative patch
System: flapims2 Wed Feb 13 15:14:40 2002
Load averages: 0.47, 0.45, 0.45
160 processes: 151 sleeping, 9 running
Cpu states:
CPU LOAD USER NICE SYS IDLE BLOCK SWAIT INTR SSYS
0 0.45 2.0% 0.0% 1.8% 96.2% 0.0% 0.0% 0.0% 0.0%
1 0.49 9.3% 0.0% 2.8% 87.9% 0.0% 0.0% 0.0% 0.0%
--- ---- ----- ----- ----- ----- ----- ----- ----- -----
avg 0.47 5.7% 0.0% 2.4% 91.9% 0.0% 0.0% 0.0% 0.0%

Memory: 35092K (19484K) real, 206824K (39376K) virtual, 8812K free Page# 1/10

Ron

[Sanjay_6 · Accepted solution]

Hi Ron,

This problem was discussed in the thread below,

http://us-support2.external.hp.com/cki/bin/doc.pl/sid=bc23c4af040bca03dd/screen=ckiDisplayDocument?docId=200000049809940

Hope this helps.

Regds

[Ron Kinner]

Such a quick response. I can't even get the search engine to reply that quickly!

Thanks a lot.

Ron

[Sanjay_6]

Hi Ron,

I had faced a similar problem earlier, so i knew where to go.

Thanks & Regards
Sanjay