NMMGR TCP setting:
[Y] Checksum Enabled (Y For Yes, N For No)
[1024 ] Maximum Number of Connections
[4 ] Retransmission Interval Lower Bound (Secs)
[480 ] Maximum Time to Wait For Remote Response (Sec)
[5 ] Initial Retransmission Interval (Secs)
[8 ] Maximum Retransmissions per Packet
[600 ] Connection Assurance Interval (Secs)
[4 ] Maximum Connection Assurance Retransmissions
Craig, you might have identified the issue: Change ports or switch to one
not hardcoded as 100 mbit full duplex
I sat though a two hour status of the account meeting today. One of the
presenters discussed network consolidation efforts, and commented on the
fact that the network consolidation effort has not been as stable as
desired.
_________________
Kevin Smeltzer
IT Specialist - HP MPE systems
804-354-7950
Cell: 804-651-5428
[log in to unmask]
From: Craig Lalley <[log in to unmask]>
To: [log in to unmask], Kevin Smeltzer/Richmond/IBM@IBMUS
Date: 07/28/2011 06:35 PM
Subject: Re: Deteriorating Network response times
Kevin,
Given the output, I would agree with donna. How are your tcp timers set?
(This is in NMMGR)
Given that you probably have not changed them. Is there any chance
someone on the network team moved the 3000 to a different port or switch?
Perhaps a port that is not hardcoded as 100 mbit full duplex?
Just a guess.
-Craig
--- On Thu, 7/28/11, Kevin Smeltzer <[log in to unmask]> wrote:
From: Kevin Smeltzer <[log in to unmask]>
Subject: Re: Deteriorating Network response times
To: [log in to unmask]
Date: Thursday, July 28, 2011, 2:45 PM
Thanks Craig, forgot to include Resource:
[2]RESOURCE>>>display
THU, JUL 28, 2011, 5:41:45 PM
Item Subsystem Name G/N Description Used High Max
____________________________________________________________________
1 NS XPORT CP_POOL_ (G) Control Buf Pool 0 1 300 :)
2 NS XPORT 1536___D (G) Inbound Buf Pool 87 207 682 :)
3 NS XPORT LOOP____ (N) Outbnd Buf Pool 0 0 128 :)
4 NS XPORT FASTNET_ (N) Outbnd Buf Pool 0 85 2048 :)
5 NS XPORT FASTNET2 (N) Outbnd Buf Pool 0 1 2048 :)
6 NS XPORT FASTNET_ (N) StrFwd Buf Pool 0 0 20 :)
7 NS XPORT FASTNET2 (N) StrFwd Buf Pool 0 0 20 :)
8 NS XPORT UDP (G) GProt Msg Pool 0 N/A 512 :)
9 NS XPORT PXP (G) GProt Msg Pool 0 N/A 660 :)
10 NS XPORT PROBE (G) CM Prot Msg Pool 0 N/A 677 :)
11 NS XPORT PROBE (G) CM Prot Msg Pool 0 N/A 677 :)
12 NS XPORT IP_NI (G) IP-NI Msg Pool 0 N/A 2048 :)
13 NS XPORT IP_NI (G) IP-NI Msg Pool 0 N/A 2048 :)
14 NS XPORT IP_NI (G) IP-NI Msg Pool 0 N/A 2048 :)
15 NS XPORT (G) Node Name Cache 0 5 360 :)
16 NS XPORT (G) TCP Control pool 0 27 2048 :)
17 TELNET PTOD (G) Write Buf Pool 10 38 2048 :)
18 TELNET PTID (G) Outbnd Buf Pool 0 10 2048 :)
19 TELNET PTID (G) Inbound Buf Pool 1 10 2048 :)
20 TELNET PTOD (G) Negot Buf Pool 0 1 2048 :)
[3]RESOURCE>>>
New linkcontrol listing:
sys:linkcontrol @,a
Linkname: DTSLINK Linktype: PCI 100BT Linkstate: CONNECTED
Physical Path: 0/0/0/0
Current Station Address: 00-30-6E-C3-E3-CB
Default Station Address: 00-30-6E-C3-E3-CB
Current Multicast Addresses:
09-00-09-00-00-01 09-00-09-00-00-03 09-00-09-00-00-04
09-00-09-00-00-06
Transmit bytes 18000437 Receive bytes 7430235
Transmits 22961 Receives unicast 18761
Transmits no error 22961 Receives broadcast 5772
Transmits dropped 0 Receives multicast 0
Transmits deferred 0 Receives no error 24533
Transmits 1 retry 0 Recv CRC error 0
Transmits >1 retry 0 Recv Maxsize error 0
Trans 16 collisions 0 Recv dropped: addr 0
Trans late collision 0 Recv dropped: buffer 0
Trans underruns 0 Recv dropped: descr 0
Carrier losses 0 Recv dropped: other 0
Trans jabber timeout 0 Recv watchdg timeout 0
Link disconnects 0 Recv collisions 0
Link speed 100 Recv overruns 0
Link duplex Full Link auto sensed No
Link mode 100Base-TX Core Secs since clear 10024
Linkname: FASTLNK2 Linktype: PCI 100BT Linkstate: CONNECTED
Physical Path: 1/8/0/0
Current Station Address: 00-30-6E-EA-85-0F
Default Station Address: 00-30-6E-EA-85-0F
Current Multicast Addresses:
09-00-09-00-00-01
Transmit bytes 2460 Receive bytes 18098338
Transmits 41 Receives unicast 1375
Transmits no error 41 Receives broadcast 198205
Transmits dropped 0 Receives multicast 0
Transmits deferred 0 Receives no error 27190
Transmits 1 retry 0 Recv CRC error 0
Transmits >1 retry 0 Recv Maxsize error 0
Trans 16 collisions 0 Recv dropped: addr 172390
Trans late collision 0 Recv dropped: buffer 0
Trans underruns 0 Recv dropped: descr 0
Carrier losses 0 Recv dropped: other 0
Trans jabber timeout 0 Recv watchdg timeout 0
Link disconnects 0 Recv collisions 0
Link speed 100 Recv overruns 0
Link duplex Full Link auto sensed No
Link mode 100Base-TX Addon Secs since clear 10024
sys:
_________________
Kevin Smeltzer
IT Specialist - HP MPE systems
804-354-7950
Cell: 804-651-5428
[log in to unmask]
From: Craig Lalley <[log in to unmask]>
To: [log in to unmask], Kevin Smeltzer/Richmond/IBM@IBMUS
Date: 07/28/2011 05:17 PM
Subject: Re: Deteriorating Network response times
Keven,
Just the usual,
NETTOOL.NET.SYS --> RESOURCE --> DISPLAY
LINKCONTROL @,a
Would help determine any issues.
-Craig
--- On Thu, 7/28/11, Kevin Smeltzer <[log in to unmask]> wrote:
From: Kevin Smeltzer <[log in to unmask]>
Subject: Deteriorating Network response times
To: [log in to unmask]
Date: Thursday, July 28, 2011, 2:09 PM
I have a steadily deteriorating response time condition with a development
HP3000. System is a N-class, with 3 CPU. Running 7.5 PP6. Started about
two months ago. Today so bad test programs can not stay connected to
Quick application. Jinetd shows no issues. Stopped and restarted job
anyway. No help. Linkcontrol only shows an issue with Recv dropped: addr
on one path. This is a known issue with some enterprise network
monitoring software that sends a packet that the HP3000 can not handle.
Even HP last year had no solutions for that issue. The linkcontrol stats
were reset about an hour ago. No issues reported before the reset either.
No memory dump files. No jobs aborting. No hardware alerts.
The system has three network connects. Two 100BT cards, and ldev 20 is
network cabled. All three have issues with ping response times. Ping
from laptop reports 4 for 4 most of the time. Have seen as bad as 2
failed out of 4. Have seen response times of >75ms. Ping from
development system to another HP3000 will also sometimes report dropped
packets. Ping from another HP3000 to development system will also
sometimes report dropped packets. Glance shows no issues, except
sometimes 'TERM' wait when running Glance from two different sessions.
This happens even when CPU and Memory are 1% with Glance the only active
pin.
What am I missing, before dragging network personal back into issue?
linkcontrol @,all
Linkname: DTSLINK Linktype: PCI 100BT Linkstate: CONNECTED
Physical Path: 0/0/0/0
Current Station Address: 00-30-6E-C3-E3-CB
Default Station Address: 00-30-6E-C3-E3-CB
Current Multicast Addresses:
09-00-09-00-00-01 09-00-09-00-00-03 09-00-09-00-00-04
09-00-09-00-00-06
Transmit bytes 16110734 Receive bytes 1587070
Transmits 15963 Receives unicast 12033
Transmits no error 15963 Receives broadcast 3494
Transmits dropped 0 Receives multicast 0
Transmits deferred 0 Receives no error 15527
Transmits 1 retry 0 Recv CRC error 0
Transmits >1 retry 0 Recv Maxsize error 0
Trans 16 collisions 0 Recv dropped: addr 0
Trans late collision 0 Recv dropped: buffer 0
Trans underruns 0 Recv dropped: descr 0
Carrier losses 0 Recv dropped: other 0
Trans jabber timeout 0 Recv watchdg timeout 0
Link disconnects 0 Recv collisions 0
Link speed 100 Recv overruns 0
Link duplex Full Link auto sensed No
Link mode 100Base-TX Core Secs since clear 6106
Linkname: FASTLNK2 Linktype: PCI 100BT Linkstate: CONNECTED
Physical Path: 1/8/0/0
Current Station Address: 00-30-6E-EA-85-0F
Default Station Address: 00-30-6E-EA-85-0F
Current Multicast Addresses:
09-00-09-00-00-01
Transmit bytes 1500 Receive bytes 11069670
Transmits 25 Receives unicast 1088
Transmits no error 25 Receives broadcast 121123
Transmits dropped 0 Receives multicast 0
Transmits deferred 0 Receives no error 17159
Transmits 1 retry 0 Recv CRC error 0
Transmits >1 retry 0 Recv Maxsize error 0
Trans 16 collisions 0 Recv dropped: addr 105052
Trans late collision 0 Recv dropped: buffer 0
Trans underruns 0 Recv dropped: descr 0
Carrier losses 0 Recv dropped: other 0
Trans jabber timeout 0 Recv watchdg timeout 0
Link disconnects 0 Recv collisions 0
Link speed 100 Recv overruns 0
Link duplex Full Link auto sensed No
Link mode 100Base-TX Addon Secs since clear 6106
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