IP SLA ICMP Path Jitter - Strange results

Hi all,
I'm an intern in a network company, in France. I'm working on the IP SLAs fonctions of Cisco IOS.
I've got some equipments to make some tests :
I've configured the ICMP Path Jitter operation on R1 (a 2800 router), which has the IOS Software C2800NM-ADVIPSERVICESK9-M, 15.1(1)T (fc1) :
ip sla 2
path-jitter 192.168.2.2 source-ip 192.168.1.254
tag ICMP JITTER R1-PC2
frequency 30
ip sla schedule 2 life 150 start-time now
Then, i use a software called PCATTCP to send UDP datagrams from PC2 to PC1. When PC2 send UDP at 2Mb/s or more, the results look like :
IPSLA operation id: 2
       Latest RTT: 319 milliseconds
Latest operation start time: 16:08:11.458 GMT+1 Thu Mar 22 2012
Latest operation return code: OK
---- Path Jitter Statistics ----
Hop IP 10.0.0.2:
Round Trip Time milliseconds:
       Latest RTT: 326 ms
       Number of RTT: 10
       RTT Min/Avg/Max: 319/294/333 ms
Jitter time milliseconds:
       Number of jitter: 7
       Jitter Min/Avg/Max: 2/5/9 ms
Packet Values:
       Packet Loss (Timeouts): 0
       Out of Sequence: 1
       Discarded Samples: 1
Hop IP 192.168.2.2:
Round Trip Time milliseconds:
       Latest RTT: 319 ms
       Number of RTT: 10
       RTT Min/Avg/Max: 315/255/322 ms
Jitter time milliseconds:
       Number of jitter: 5
       Jitter Min/Avg/Max: 3/4/7 ms
Packet Values:
       Packet Loss (Timeouts): 0
       Out of Sequence: 2
       Discarded Samples: 2
Operation time to live: 134 sec
How is it possible to get a minimum value greater than the average ??? I don't understand :/
Thanks.
Regis

Thanks for your answers, I'll try to change the IOS.
I noticed that the problem happens only when there are Out of Sequence packets (ICMP reply not received).
I've done again the tests, and and captured the packets with Wireshark between the two routers. I calculated the average with the values in Wireshark by adding 0 for each Out of Sequence packet, then dividing by the Number of RTT. And I got the average value displayed.
*** For example ***
10 ICMP requests are send.
9 received (ms) : 337; 334; 328; 337; 334; 328; 323; 333; 327. [values obtained with Wireshark]
--> The IP SLA results are :
Round Trip Time milliseconds:
     Number of RTT: 10
     RTT Min/Avg/Max: 324/298/338 ms
Packet Values:
     Packet Loss (Timeouts): 0
     Out of Sequence: 1
     Discarded Samples: 1
Then, let's calculate the average value :
Avg = (337+334+328+337+334+328+323+333+327+0)/10 = 298.1
And that works every time.
Regis

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Hello guys,
I need your preciuos help for a question maybe simple, but that I can't explain by myself!
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COD_TITOLO_RICCONS ,
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Thanks a lot

Right, I have executed this steps:
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- Changed the insert into with the select count(*)
- Executed the insert into
These are the result:
SQL> select count(*) from TITOLI_ORI2;
COUNT(*)
1
BUT:
SQL> select * from TITOLI_ORI2;
A
0
The insert into that I've modified is this:
INSERT INTO bsc.TITOLI_ORI2
select count(*)
FROM
(SELECT bsc.NEWID,
TO_DATE('28-feb-2111','DD-MON-YYYY') as data,
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COD_CONTO_CNTB,
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Another time the strange result returns!!
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<BLOCKQUOTE><font size="1" face="Verdana, Arial, Helvetica">quote:</font><HR>Originally posted by skcedric:
hi everyone,
here's my scenario: i'm trying to get the NUMBER OF REPORTS and NUMBER OF
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the above sql yielded strange results, number of images is equal to the number of reports, which is of course wrong! as one report may or may not contain one or more image.
i dont know what's wrong with the above statement, but if i were to group it
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can anyone shed some light on this? <HR></BLOCKQUOTE>
null

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Edited by: Pramod Verma on Mar 5, 2013 4:59 AM
Updated query and added more details

>
Since I am using Trunc() in the where clause so timing should not matter much. Also I manually ruled out records which were updated after the job run.
>
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>
where trunc(updated_date) > = trunc(sysdate-3)
>
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>
Job timing is 4am and 10pm EST
>
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Message was edited by: adamsquire

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               al2.add(dk.getCard(s));
               ll.add(ht.put(key, al2));
               //v.addElement(ht.put(key,cd2));
               for (int t=s+1; t < dk.getCardCount(); t++){
                    key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue());
                    al3 = new ArrayList();
                    al3.add(dk.getCard(f));
                    al3.add(dk.getCard(s));
                    al3.add(dk.getCard(t));
                    ll.add(ht.put(key,al3));
                    //v.addElement(ht.put(key,cd3));
                    for (int a=t+1; a < dk.getCardCount(); a++){
                         key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue()+dk.getCard(a).getValue());
                         al4 = new ArrayList();
                         al4.add(dk.getCard(f));
                         al4.add(dk.getCard(s));
                         al4.add(dk.getCard(t));
                         al4.add(dk.getCard(a));
                         ll.add(ht.put(key,al4));
                         //v.addElement(ht.put(key,cd4));
                         for (int b=a+1; b < dk.getCardCount(); b++){
                              key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue()+dk.getCard(a).getValue()+dk.getCard(b).getValue());
                              al5 = new ArrayList();
                              al5.add(dk.getCard(f));
                              al5.add(dk.getCard(s));
                              al5.add(dk.getCard(t));
                              al5.add(dk.getCard(a));
                              al5.add(dk.getCard(b));
                              ll.add(ht.put(key,al5));
                              //v.addElement(ht.put(key,cd5));
                              for (int c=b+1; c < dk.getCardCount(); c++){
                                   key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue()+dk.getCard(a).getValue()+dk.getCard(b).getValue()+dk.getCard(c).getValue());
                                   al6 = new ArrayList();
                                   al6.add(dk.getCard(f));
                                   al6.add(dk.getCard(s));
                                   al6.add(dk.getCard(t));
                                   al6.add(dk.getCard(a));
                                   al6.add(dk.getCard(b));
                                   al6.add(dk.getCard(c));
                                   ll.add(ht.put(key,al6));
                                   //v.addElement(ht.put(key,cd6));
                                   for (int d=c+1; d < dk.getCardCount(); d++){
                                        key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue()+dk.getCard(a).getValue()+dk.getCard(b).getValue()+dk.getCard(c).getValue()+dk.getCard(d).getValue());
                                        al7 = new ArrayList();
                                        al7.add(dk.getCard(f));
                                        al7.add(dk.getCard(s));
                                        al7.add(dk.getCard(t));
                                        al7.add(dk.getCard(a));
                                        al7.add(dk.getCard(b));
                                        al7.add(dk.getCard(c));
                                        al7.add(dk.getCard(d));
                                        ll.add(ht.put(key,al7));
                                        //v.addElement(ht.put(key,cd7));
                                        for (int e=d+1; e < dk.getCardCount(); e++){
                                             key = String.valueOf(dk.getCard(f).getValue()+dk.getCard(s).getValue()+dk.getCard(t).getValue()+dk.getCard(a).getValue()+dk.getCard(b).getValue()+dk.getCard(c).getValue()+dk.getCard(d).getValue()+dk.getCard(e).getValue());
                                             al8 = new ArrayList();
                                             al8.add(dk.getCard(f));
                                             al8.add(dk.getCard(s));
                                             al8.add(dk.getCard(t));
                                             al8.add(dk.getCard(a));
                                             al8.add(dk.getCard(b));
                                             al8.add(dk.getCard(c));
                                             al8.add(dk.getCard(d));
                                             al8.add(dk.getCard(e));
                                             ll.add(ht.put(key,al8));
                                             //v.addElement(ht.put(key,cd8));
     Iterator itr = ll.iterator();
     first:{
          while(itr.hasNext()){
// key2 = String.valueOf(itr.next());
//System.out.println("key2 : "+key2);
System.out.println("size "+ll.size());
System.out.println("next "+itr.next());
// intKey = Integer.parseInt(key2);
               //for(int j=comp.getCardCount()-1; j>=0;j++){
               //     if(intKey == comp.getCard(j).getValue()){
               //          newArr = (ArrayList)ht.get(key2);
               //          break first;
          if(!itr.hasNext()){
               newArr = null;
newArr = (ArrayList)ht.get(key2);
     return newArr;
the result that I get is as follows
Cards on the table are:
0. 6 of Hearts
1. 7 of Hearts
2. 4 of Spades
3. Jack of Spades
4. 7 of Spades
Its r's turn
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next [6 of Hearts, 7 of Hearts, 4 of Spades, Jack of Spades]
size 31
next [6 of Hearts, 7 of Hearts, 4 of Spades]
size 31
next null
size 31
next [6 of Hearts, 7 of Hearts, Jack of Spades]
size 31
next [6 of Hearts, 7 of Hearts]
size 31
next null
size 31
next null
size 31
next null
size 31
next null
size 31
next [6 of Hearts, 4 of Spades, Jack of Spades]
size 31
next null
size 31
next null
size 31
next [6 of Hearts, Jack of Spades]
size 31
next null
size 31
next null
size 31
next [7 of Hearts, 4 of Spades, Jack of Spades]
size 31
next [7 of Hearts, 4 of Spades]
size 31
next null
size 31
next [7 of Hearts, Jack of Spades]
size 31
next [7 of Hearts]
Exception in thread "main" java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java:320)
at Subsets.permutations(Subsets.java:124)
at PlayScopa.computerTurn(PlayScopa.java:273)
at PlayScopa.scopaPlay(PlayScopa.java:133)
at PlayScopa.scopaStart(PlayScopa.java:89)
at MainApp.main(MainApp.java:29)
[u9zuh /home/stud3/csc99/u9zuh]$
why are there gaps here
not the for loops are as follows
for(){
......for(){
.............for(){
.....................etc.....

It's telling you exactly where the problem is:
Exception in thread "main" java.lang.NullPointerException
at java.util.Hashtable.get(Hashtable.java:320)
at Subsets.permutations(Subsets.java:124)
at PlayScopa.computerTurn(PlayScopa.java:273)
at PlayScopa.scopaPlay(PlayScopa.java:133)
at PlayScopa.scopaStart(PlayScopa.java:89)
at MainApp.main(MainApp.java:29)
What code is at line 124 of Subsets?
When you figure out what line that is (use your IDE - Control-G often lets you type in a line number) look at the variables used on that line and see which one(s) hasn't been assigned a value.

IP SLA icmp jitter operation

Hello
I would like to track icmp jitter for end host. I verified in documentation that it can be any host as a destination. But i got error on this operation:
Latest RTT: NoConnection/Busy/Timeout
I verified that there is no firewall between the source and destination and icmp timestamp request works when done manually:
r01#ping
Protocol [ip]:
Target IP address: 10.23.33.6
Repeat count [5]:
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Source address or interface:
Type of service [0]:
Set DF bit in IP header? [no]:
Validate reply data? [no]:
Data pattern [0xABCD]:
Loose, Strict, Record, Timestamp, Verbose[none]: Timestamp
Number of timestamps [ 9 ]:
Loose, Strict, Record, Timestamp, Verbose[TV]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 10.23.33.6, timeout is 2 seconds:
Packet has IP options: Total option bytes= 40, padded length=40
Timestamp: Type 0. Overflows: 0 length 40, ptr 5
>>Current pointer<<
Time= 01:00:00.000 CET (00000000)
Time= 01:00:00.000 CET (00000000)
Time= 01:00:00.000 CET (00000000)
Time= 01:00:00.000 CET (00000000)
Time= 01:00:00.000 CET (00000000)
Time= 01:00:00.000 CET (00000000)
Time= 01:00:00.000 CET (00000000)
Time= 01:00:00.000 CET (00000000)
Time= 01:00:00.000 CET (00000000)
Reply to request 0 (4 ms). Received packet has no options
Reply to request 1 (4 ms). Received packet has no options
Reply to request 2 (1 ms). Received packet has no options
Reply to request 3 (1 ms). Received packet has no options
Reply to request 4 (1 ms). Received packet has no options
Success rate is 100 percent (5/5), round-trip min/avg/max = 1/2/4 ms
r01#sh ip sla statistics 196
IPSLAs Latest Operation Statistics
IPSLA operation id: 196
Type of operation: icmp-jitter
Latest RTT: NoConnection/Busy/Timeout
Latest operation start time: 12:45:21.019 CET Fri Nov 21 2014
Latest operation return code: Timeout
RTT Values:
Number Of RTT: 0 RTT Min/Avg/Max: 0/0/0
Latency one-way time:
Number of Latency one-way Samples: 0
Source to Destination Latency one way Min/Avg/Max: 0/0/0
Destination to Source Latency one way Min/Avg/Max: 0/0/0
Jitter Time:
Number of SD Jitter Samples: 0
Number of DS Jitter Samples: 0
Source to Destination Jitter Min/Avg/Max: 0/0/0
Destination to Source Jitter Min/Avg/Max: 0/0/0
Packet Late Arrival: 0
Out Of Sequence: 0
Source to Destination: 0 Destination to Source 0
In both Directions: 0
Packet Skipped: 0 Packet Unprocessed: 0
Packet Loss: 0
Loss Period Length Min/Max: 0/0
Number of successes: 0
Number of failures: 34
ip sla 197
icmp-jitter 10.23.33.6
frequency 30
ip sla schedule 197 life forever start-time now
Nov 21 12:57:43: IP SLAs(197) Scheduler: saaSchedulerEventWakeup
Nov 21 12:57:43: IP SLAs(197) Scheduler: Starting an operation
Nov 21 12:57:43: IP SLAs(197) icmpjitter operation: Starting icmpjitter operation
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Nov 21 12:57:49: IP SLAs(197) Scheduler: Updating result
Nov 21 12:57:49: IP SLAs(197) Scheduler: start wakeup timer, delay = 24796
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Nov 21 12:57:49: IP SLAs(197) icmpjitter operation: Timeout
Any help would be appreciated.

Hi Jorge
According to Cisco documentation icmp-jitter should work on any IP Device.
I have a similar issue.
1. I can run icmp-jitter successfully to non cisco routers
2. it fails to run to a generic ip device.
Imran

SLA ICMP-Jitter Operation problems

I'm trying to guage network performance using the UDP-jitter and ICMP-jitter operations for a specific network segment. We have a voice encoders that stream the audio over IP using UDP across the network. The issue we are experiencing is out-of-sequence packets; these packets show up as artefacts on the receiving end audio output. I understand that UDP is a connectionless protocol that doesn't provide any mechanism for sequencing. This is where teh SLA monitors come in.
I'm seeing statistics across the monitors that are inconsistent with each other. They aren't off just a little from each other; they are off quite a bit. The UDP-jitter operation (40006) isn't reporting any out-of-sequence packets (I can only see the last two hours, so I just changed the history to 24 hours). Operations 40001 and 40002 (ICMP-jitter) seem to report no packets as out-of-sequence or all packets as out-of-sequence. Operation 40002 is reporting around 50% packet loss. This is a false report. Operation 40006 is reporting 0% packet loss and the CODECs would be unusable if this were the case. Operations 50001 and 50002 were just configured so I don't have much history on them. Operation 50001 seems to be running clean, but 50002 has a lot of unprocessed packets.
You may have noticed that the operations that traverse the satellite link have a TOS of 172 (DSCP 43). This is done to ensure the the SLA monitor doesn't step on the CODEC traffic (DSCP EF, which is assigned to the LLQ). That's not to say that the traffic isn't prioritized; it is guaranteed bandwidth across the link. Also, there is no congestion on the network. I have also checked QoS policy-maps and there are no drops for the assoiciated queues. The circuits are up and stable. One circuit is a little dirty, but it the error rate is pretty low 0.003%.
So, my question is two part:
1. Why am I recieving out-of-sequence packets?
2. Has anyone else had this problem or a similar problem with the ICMP-jitter operation?
I have included a basic diagram and the statistics I have been able to collect thus far.

Hi Jorge
According to Cisco documentation icmp-jitter should work on any IP Device.
I have a similar issue.
1. I can run icmp-jitter successfully to non cisco routers
2. it fails to run to a generic ip device.
Imran

XMLTable and strange results

I seem to be getting strange or at least unexpected results from the result of a PL SQL Query that uses XMLTable() in Oracle 11g1.
I have a table in Oracle that looks like this -
CREATE TABLE EPBNI_XML_TEST
(<blockquote>RRN VARCHAR(24) PRIMARY KEY,
ClipID VARCHAR2(27),
Lodgement XMLType</blockquote>)
XMLTYPE COLUMN Lodgement
STORE AS OBJECT RELATIONAL
ELEMENT "ConditionReportCreateRequest_1.xsd#ConditionReportCreateRequest_1";
Each XML Document stored in the XMLTYPE Column Lodgement is a little bit like this (simplified) -
<ConditionReportCreateRequest_1>
<blockquote>
<Content><blockquote><X-Report><blockquote><Report-Header><blockquote><RRN>123</RRN>
<Report-Type>type A</Report-Type>
<Status>status A</Status></blockquote></Report-Header></blockquote></X-Report></blockquote></blockquote><blockquote><blockquote><Y-Report></blockquote></blockquote><blockquote><blockquote><blockquote><Report-Header></blockquote></blockquote></blockquote><blockquote><blockquote><blockquote><blockquote><RRN>321</RRN>
<Report-Type>type B</Report-Type>
<Status>status B</Status></blockquote></Report-Header></blockquote></Y-Report></blockquote></Content></blockquote></ConditionReportCreateRequest_1>
Each Lodgement can have one or more reports in the XML document. What I am trying to acheive is getting a single list of the RRN, Report-Type and Status of every report, e.g.
RRN Report-Type Status
123 type A status A
321 type B status B
112 type A status A
113 type C status A
etc... etc....
My PL SQL and XQuery looks a bit like this -
SELECT xtab.RRN, xtab.ReportType, xtab.ReportStatus from
EPBNI_XML_TEST,
XMLTable('<blockquote>for $reportHeader in /ConditionReportCreateRequest_1/Content/child::element()/Report-Header return
<report>
$reportHeader/RRN,
$reportHeader/Report-Type,
$reportHeader/Status
</report></blockquote>'
PASSING LODGEMENT
COLUMNS
RRN VARCHAR2(24) PATH 'RRN',
ReportType VARCHAR2(1) PATH 'Report-Type',
ReportStatus VARCHAR2(10) PATH 'Status'
) xtab;
The problem is though that I seem to get only 1 result for each row of the table. I.e. if I have 9,000 rows in the EPBNI_XML_TEST table I only get 9,000 results. However I need one result for each report in each lodgement, probably closer to 18,000 results. Also all 9,000 results are the same - which I dont understand - i.e. all 9,000 are -
RRN Report-Type Status
123 type A status A
123 type A status A
123 type A status A
(upto 9000 identical result rows...)
What am I doing wrong or mis-understanding here?
Thanks Adam.
Edited by: adamretter on Oct 29, 2008 2:39 PM

try this
SELECT xtab.RRN, xtab.ReportType, xtab.ReportStatus from
EPBNI_XML_TEST,
,xmltable('/ConditionReportCreateRequest_1/Content/*/Report-Header'
passing LODGEMENT
columns
rrn varchar2(24) path 'RRN/text()'
,reporttype varchar2(10) path 'Report-Type/text()'
,status varchar2(10) path 'Status/text()') xtab;**not tested**

IP SLA ICMP Path Jitter - Strange results

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