11-04-2008 08:39 AM
Hi,
Port 389 is configured on ACE to loadbalance to LDAP.
Test clients runn ok for approximately 2 minutes and then fails. Then every other test fails, untill clear connection all on ACE is applied.
Any suggestion as to what to check in this situatiobn, please?
Note: tried the followings
!!!!!!!tried both of these
parameter-map type connection TCP_PARAM
set timeout inactivity 600
exceed-mss allow
parameter-map type connection inactivity10
set timeout inactivity 0
set tcp timeout half-closed 0
parameter-map type connection inactivity1
set timeout inactivity 2
Also Back-to-back lDAP-to-Clients on a local network works fine.
Regards
SS
!!!!!!!!!!!!
serverfarm host zxxxxxxxFarm-SF78
failaction purge !-----------tried
predictor leastconns
rserver zxxx-L7 389
inservice
rserver zxxx-L8 389
inservice
11-04-2008 08:43 AM
Get a sniffer trace of the entire connection until the problem.
Get a 'show serverfarm host zxxxxxxxFarm-SF78 detail' before and after the problem occurs.
What is your sofware version ?
Gilles.
11-05-2008 06:44 AM
Dear Gilles,
Please find two attachments in this reply.
for
1 client h/w run 5 clients, 1 thread each
Start: 13:55:21
reported by server
1st fail: 13:55:46
2nd fail: 13:55:46
3rd fail: 14:00:18
4th fail: 14:01:12
5th fail: 14:01:08 yes re[prted late
Thank you
SS
-----------
/Admin# sh ver
loader: Version 12.2[120]
system: Version 3.0(0)A1(6.3a) [build 3.0(0)A1(6.3a) adbuild_02:16:25-2008/
02/02_/auto/adbu-rel3/ws/rel_3_0_0_a1_6.3-throttle/REL_3_0_0_A]
system image file: [LCP] disk0:c6ace-t1k9-mz.3.0.0_A1_6_3a.bin
installed license: ACE-SEC-LIC-K9 ACE-SSL-10K-K9
Hardware
Cisco ACE (slot: n)
cpu info:
number of cpu(s): 2
cpu type: SiByte
cpu: 0, model: SiByte SB1 V0.2, speed: 700 MHz
cpu: 1, model: SiByte SB1 V0.2, speed: 700 MHz
memory info:
total: 957640 kB, free: 333336 kB
shared: 0 kB, buffers: 3384 kB, cached 0 kB
cf info:
filesystem: /dev/cf
total: 1014624 kB, used: 390560 kB, available: 624064 kB
==============
=================================== before test start
/Admin# sh serverfarm zSunTestFarm-SF78 detail
serverfarm : zSunTestFarm-SF78, type: HOST
total rservers : 2
description : -
predictor : LEASTCONNS
slowstart : 0 secs
failaction : purge
total conn-dropcount : 0
---------------------------------
----------connections-----------
real weight state current total
---+---------------------+------+------------+----------+--------------------
rserver: zSunTest-L7
10.193.143.17:389 8 OUTOFSERVICE 0 0
total conn-failures : 0
rserver: zSunTest-L8
10.193.143.18:389 8 OPERATIONAL 1 0
total conn-failures : 0
=========================================================
=======================================================after test stop
/Admin# sh serverfarm zSunTestFarm-SF78 detail
serverfarm : zSunTestFarm-SF78, type: HOST
total rservers : 2
description : -
predictor : LEASTCONNS
slowstart : 0 secs
failaction : purge
total conn-dropcount : 0
---------------------------------
----------connections-----------
real weight state current total
---+---------------------+------+------------+----------+--------------------
rserver: zSunTest-L7
10.193.143.17:389 8 OUTOFSERVICE 0 0
total conn-failures : 0
rserver: zSunTest-L8
10.193.143.18:389 8 OPERATIONAL 1 50
total conn-failures : 130023
!!!!!!!!
end
11-05-2008 07:40 AM
When tcp-option set to
half-closed=1
The failures begin to occur at an interval bigger than when I had it set as 3600.
But sh serverfarm xxx detail
shows large failurees.
11-05-2008 07:49 AM
I would need a libpcap capture file - not the text version.
Copy the capture file to the disk0: and extract if via ftp.
Is it possible that your traffic is asymetric ?
So the server traffic bypass the CSS or come back on a different vlan ?
G.
11-06-2008 08:00 AM
Dear Giles,
Avoided all possible back doors, asymetric
Still problem.
Attaching a new capture file
with a client-int snoop file
-- can send server interface snoop for this if required.
Additional info as follows
This is the message displayed on LDAP client (tool), when failed
[11/06/2008:14:57:26] - JOB - Starting Modified LDAP Weighted SearchRate job 20081106145715-607099232
[11/06/2008 15:01:02] - JOB - client=know-suntest-C4:43420 job=20081106145715-607099232 - ERROR -- Could not connect to 10.193.143.10:389 (netscape.ldap.LDAPException: Unable to establish the connection: java.net.ConnectException: Connection refused (-1)) -- aborting thread
[11/06/2008 15:01:03] - JOB - client=know-suntest-C4:43414 job=20081106145715-607099232 - ERROR -- Could not connect to 10.193.143.10:389 (netscape.ldap.LDAPException: Unable to establish the connection: java.net.ConnectException: Connection refused (-1)) -- aborting thread
[11/06/2008:14:59:49] - JOB - Modified LDAP Weighted SearchRate job 20081106145715-607099232 completed
XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX ACE collections
start s/farm failure 0, rest
/Admin# capture ztest5 stop
/Admin# sh serverfarm zSunTestFarm-SF78 detail
serverfarm : zSunTestFarm-SF78, type: HOST
total rservers : 2
description : -
predictor : ROUNDROBIN
failaction : purge
total conn-dropcount : 0
---------------------------------
----------connections-----------
real weight state current total
---+---------------------+------+------------+----------+--------------------
rserver: zSunTest-L7
10.193.143.17:389 8 OPERATIONAL 0 0
max-conns : 1000 , out-of-rotation count : 0
min-conns : 500
total conn-failures : 16791
rserver: zSunTest-L8
10.193.143.18:389 8 OPERATIONAL 0 0
max-conns : 1000 , out-of-rotation count : 0
min-conns : 500
total conn-failures : 16791
=====================================================================
/Admin# sh parameter-map i
inactivity1 inactivity10 inactivity2700
know-itpace-3ao/Admin# sh parameter-map inactivity1
Parameter-map : inactivity1
Type : connection
nagle : disabled
slow start : disabled
buffer-share size : 32768
inactivity timeout (seconds) : 30
embryonic timeout (seconds) : 5
ack-delay (milliseconds) : 200
WAN Optimization RTT (milliseconds): 65535
half-closed timeout (seconds) : 35
TOS rewrite : disabled
syn retry count : 4
TCP MSS min : 0
TCP MSS max : 1460
tcp-options drop range : 0-0
tcp-options allow range : 0-0
tcp-options clear range : 1-255
selective-ack : clear
timestamp : clear
window-scale : clear
window-scale factor : 0
reserved-bits : allow
random-seq-num : enabled
SYN data : allow
exceed-mss : drop
urgent-flag : allow
xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx ACE capture file ztest5 is encloded
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