Network Analysis withinCost & "traction zone" or isochrones

Hello
The Pro Oracle Spatial book mentions in Chapter 10 the use of "traction zone" polygon and/or isochrones, based on the results (Nodes/endpoints) of the withinCost network analysis.
My questions:
1. How should these polygons be created (based on voronoi?)?
2. Has anybody implemented the creation of isochrones already in Oracle spatial( java/ pl-sql)?
3. Is this planned in later releases?
Any info would be appreciated?
tx
Luc

Either this is a little weird or I'm looking at the wrong place. If I do a show statistics virtual-sensor I seem to be getting some hits on different sigs:
Per-Signature SigEvent count since reset
            Sig 6403.1 = 6
            Sig 6409.1 = 17
            Sig 6409.2 = 2
            Sig 20059.1 = 1453
            Sig 21619.1 = 2
            Sig 23782.2 = 2
            Sig 30260.1 = 3
However If I go to the IDM, Monitoring, Events, Event Viewer all I see is health messages from the sensor itself, not signatures.
Any ideas? Thanks.

Similar Messages

Network analysis performance issue

Hello,
I am starting working on a Project
on Oracle Network data model.
The network I will manage will have about 5.000.000 of links
(all Italian Streets).
I am working with oracle database 10g R2
Until now I only did some tests:
I loaded only one zone (about 130.000 links) and I tried
to do some network analysis like find the shortest path between
2 nodes.
I used plsql and a client java, using java api, to do the network analysis
and I obtained the following results:
In a plsql script:
1) execute SDO_TOPO_MAP.SET_MAX_MEMORY_SIZE(1000000000) procedure;
2)execute sdo_net_mem.network_manager.read_network('NETWORK_1') procedure to
load all the network in memory.
It takes about 22 seconds
3) execute sdo_net_mem.network_manager.SHORTEST_PATH('NETWORK_1', start_node_id, end_node_id) function
to find the shortest path.
It takes about 1.8 sec
In java Client StandAlone
1)invoke the NetworkManager.readNetwork(connection, networkName) java API
to load all the network in memory.
It takes about 11 seconds.
2) invoke NetworkManager.shortestPath(network,startNodeID,endNodeID) java API
to find the shortest path. It takes about 140 milliseconds
My question are:
1) How can I improve the plsql api performance?
2) When I'll have loaded all the network links and nodes
(about 5.000.000 of links ) into database,
the step to load the entire network will take very
long time (in java enviroment too)...
So it should be unthinkable (response time too high) to load
the network at runtime...
It means that the system have to hold always the network object in memory?
This solution is not scalable, and it need a lot system resources....
I will be very grateful if someone who faced the same problem can
help me and give me some suggestions.
Thank you
Paola

hi K,
did u have a look at this post?
Re: Network Memory Object (PL/SQL)
The oracle documentation seems to be wrong for the procedure SDO_TOPO_MAP.SET_MAX_MEMORY_SIZE (you can also try this SDO_NET_MEM.SET_MAX_MEMORY_SIZE which seems to do the same!!!): "Number of bytes for the Java maximum heap size. The default value is 262144 (256MB)."
It is wrong : for 1GB you should use this value 1073741824 and not 1048576 !!!
With my network which has about 10.000 nodes / 10.000 links, it has no effect to load the network : 7min... I will try again to create a network which has 700000 links...
hope this help...

How to store the data coming from network analyser into a text or excel file

Hii everyone
I'm using Agilent 8719ET network analyser and wish to store the data coming from netowrk analyser into a text file/ excel file.
Presently I'm able to get the data on Labview graph using GPIB . Can anyone suggest how to go ahead after collect data sub vi. How can the data be stored into a file apart from showing on the graph?
Attached is the vi for kind consideration...
Looking for help
Regards
Rohit
Attachments:
Agilent 87XX Series Exceed Max Meas.vi ‏43 KB

First let me say that your code really looks pretty good. The data handling could be made more efficient by calculating the number of datapoints that are going to be in the completed dataset and preallocating the entire array -- but depending upon your answer to my questions, the logic in the lower shift register may be going away - so we won't worry about that right now.
The thing I need to know before addressing the data storage question is: Each time you call "Collect and Display Data.vi", how many element are in the array? Are you reading single data points, or a group of data? (BTW: if the answer to that question is obvious based on the way the other VIs are setup, I don't have the drivers so I can't tell what the setup values are.) Second, how fast does the loop iterate? Are we talking msec per loop?, seconds? fortnights?
The issues here are two-fold: how much data? and how fast is it coming? The answer to these will tell you how to save the data.
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps

Networking problem after a zone is created and installed

Hi all,
I've got a networking problem after a zone was created and installed on a Solaris 10 box. The box was configured with two NICs, one (e1000g0) with a public IP address, the other one (e1000g1) with a private IP address and connected to a local switch. All worked fine so far.
Then I created a local zone with shared networking (e1000g1). The zone has a private IP address which is in the same subnet as e1000g1 on the global zone. After some time, I noticed that I could not access (ssh, ping) the global zone. Then after some time, the global zone became available. The problem happened quite frequently.
Also I observed that: 1) When the global zone was unavailable from outside, it was available (ssh, ping) from another box within the same subnet (e1000g0); 2) If I shutdown e1000g1, the problem was gone.
Any idea what caused this problem?
Many thanks,
Xiaobo

It was a route problem.

How to add network information for failover zones with logical hostname?

Hello!
As stated in [http://docs.sun.com/app/docs/doc/819-3069/ds_template-21?a=view] I must not configure network addresses for a zone when I manage these with a logical hostname:
If you require the SUNW.LogicalHostName resource type to manage all the zone's addresses, configure a SUNW.LogicalHostName resource with a list of the zone`s addresses and do not configure them by using the zonecfg utility.But when I start the zone for the first time using "zlogin -C" it does not ask me any questions about the network. Of course, there is no adapter configured. But how do I add information like routes or nameservers to the system when using a logical hostname?
TIA
Stephan

Hi Stephan,
I can only assume that when the zone was configured via zonecfg without any network interfaces that sysidcfg did not ask you for the default route or name service, as such you will need to setup those parts up manually.
Please take a look at the FAQs for zones, i.e. http://opensolaris.org/os/community/zones/faq/ in particular
http://opensolaris.org/os/community/zones/faq/#u5
http://opensolaris.org/os/community/zones/faq/#cfg_defroute
Finally, if you require a NIS client then please see http://docs.sun.com/app/docs/doc/816-5166/ypinit-1m?a=view
Regards
Neil

Network Analysis Module (NAM) port-adapter not collect data

Hi,
i have an issue for collect data on adapter 1, that don´t collect data but see that adapter 2 if collect data on module 4.
monitor session 1 source vlan 102 rx
monitor session 1 destination analysis-module 4 data-port 1
monitor session 2 source vlan 106 rx
monitor session 2 destination analysis-module 4 data-port 2
I reconfigured newly monitor and continues with that issue. Always ok by data-port 2.
- show version Cisco 6513
Cisco IOS Software, s72033_rp Software (s72033_rp-ADVENTERPRISEK9_WAN-M), Version 12.2(33)SXH7, RELEASE SOFTWARE (fc3)
. show version NAM
NAM application image version: 3.5(1b)
- sh module
Ports Card Type                              Model
8 Network Analysis Module                WS-SVC-NAM-2
Hw    Fw           Sw           Status
   2.0   7.2(1)       3.5(1b)      Ok
Any idea or cuestion?

Hi,
I see web GUI that is active 2 monitor session with Destination Module 4.
Active SPAN Sessions
Monitor Session
Type
Source - Direction
Dest. Port
Dest. Module
Status
1
vlan
(106) - Rx
4/7
4 (local)
active
2
vlan
(102) - Rx
4/8
4 (local)
active
Select a SPAN session, then take an action
Create
Save
Add Dest. Port 1
Add Dest. Port 2
Edit
Delete
But don´t see data about DATA PORT 1, but if see data about DATA PORT 2
Data Source:
Most Active Applications (bytes/sec)         No data available
Most Active Hosts (output bytes/sec)Total hosts      90 (Network)   No data available
Protocol Suites No data available
Server Response Times (msec)          No data available
Any ideas?

Network Analysis Module - Capture File Download

Hello,
we have
NAM Moduels Network Analysis Module 3 WS-SVC-NAM-3-K9
installed in
6506-E
software version 6.0
We have generated some Capture files, that we now would like to Download at once. Not by clicking each file and make a single download.
There are some 2000 files, thats why :-)
Does anyone have an idea how to do that? Is there any direct access to the internal Hard Drive? I could not find anything in CLI or GUI Guides.
Thanks

I attached a file with the 6509 config, sh snmp user and sh snmp result.
When I go to :
Setup > Managed Device > Device Information
I've got :
Access to the managed device failed. This may be due to
      1. Incorrect managed device IP address.
      2. Incorrect managed SNMP community string.
      3. The managed device's SNMP access control list is enabled.
If the managed device's IP address or community string is incorrect, please use the input
fields below to set the correct IP address and SNMP read-write community string.
Otherwise, check if your managed device's SNMP access control list is enabled
and make sure that the NAM's IP address shown in the Test popup
window is included in the access control list.
I've got this result when I test SNMP connectivity on the 2220. I tested snmpv3 with authpriv, authnopriv, noauthnopriv.
Test Connectivity :
SNMP read from managed device:     Failed
SNMP write from managed device:     Failed
So I was thinking at some small license requirement for SNMPv3 as no packet were transmitted from the 2220. Unlike in SNMPv1 where I could capture the management packet.

How can I acquire trace data from Agilent(HP)8510c Network Analyser in VB6 using PCI-GPIB and NI-488.2.

I am developing an application in VB6 for measurements with Agilent (HP)8510C network Analyser using NI-488.2 and National Instrument PCI-GPIB card. I want to take data for the whole 51 points. In HPBASIC which used to be employed for this purpose it is done using OUTPDATA command and the data is in a 2-dimensional array. How can I do this in VB6 with the hardware above.
kapil

Hi Kapil:
Please refer to a previous post on the same topic:
http://forums.ni.com/ni/board/message?board.id=140&message.id=7758#M7758
Although this is for C++, the basic functionality should be the same. Since OUTPDATA is from a specific instrument driver, your best bet will be comparing it to the instrument drivers mentioned in the previous post.
Thank you,
Emilie S.
National Instruments
Applications Engineer

A simple network analyser.

Hi,
I am going to achieve impedance in labview. For development work, I will work with a 6220 DAQ and a small RC circuit, generating the voltage from the DAQ, and recording the output voltage in the inputs of the DAQ.
Therefore, I am looking for a network analyser vi.
Does anyone have something I could start with?
Best regards,
Kentmey
Kentmey

Hi Benjamin,
This part of the project is just development, the main part is impedance on fuel cells with Labview (electrochemical devices generating voltage and current).
1) RC : I don't have it yet, but I think a simple 10kohm resistor with a 0.1microF capacitor. This circuit is ONLY for development work, to develop the network analyser.
2) I have a vi (not finished though, I don't have the DAQ yet), generating a sinwave (see file attached), which will generate the AC component. Why can't I use this signal as an output signal? (my expertise in electronics is not huge, but growing...)
My idea was to send this signal to the DAQ. As it is for development work, I am choosing the simplest option possible.
- For the project, I have a load unit Agilent 6060B, and GPIB cable (to control the AC and DC compenent) of the current. And I will record current and voltage input with the DAQ card. Using the network analyser to have the frequencies with different amplitude, and generate nyquist.
Does this make sense to you?
Best regards
Kentmey
Kentmey
Attachments:
SineWave 161211.vi ‏120 KB

LRS and network analysis like shortest path

Does Spatial support/has function for network analysis, like fe. Shortest path?
Maybe via the LRS?
tx
Luc VAN LINDEN

Hi,
This feature is not supported using any Oracle Spatial primitives. It is possible to manipulate geometries and get this information, but you would need to write your own functions.

Network access from local zones on a Solaris 10 router

I'm kind of stuck at an interesting problem.
I have a Solaris 10u6 system which is itself a router between a number of networks.
It has several dozen routes to different networks via different next-hop gateways,
just one of which is a default route to the ISP to internet.
I thought of setting up local zones to securely run infrastructure services (BIND,
Squid, Mail relay) on this machine, with only a single dedicated public IP address
(from our delegated address space) per such zone. Zones use a shared-IP stack
on one of the machine's VLAN interfaces (the LAN part with public IP addresses).
The problem is - since this machine is the gateway for the subnet used for the
local zones, they don't inherit any default route. The one default we have to the
ISP is on another interface's subnet.
[root@ns8 /]# netstat -rn | grep default
[root@ns8 /]# netstat -rn | wc -l
50
On a side note, these zones do inherit dozens of other routes (50 above) with
next-hop routers not on the local zone's subnet - so these are also not accessible.
I think such useless routes should also be filtered away - as "mismatching" default
routes are.
Due to all this the zone has no networking outside its subnet/mask: it doesn't
even try to send anything, since there is not a single route with a matching next
hop router, i.e.
[root@ns8 /]# traceroute -nI 194.87.0.50
traceroute to 194.87.0.50 (194.87.0.50), 30 hops max, 40 byte packets
1 xx.yy.zz.8 0.102 ms !H 0.032 ms !H 0.027 ms !H
To reiterate, this setup is different from that of the numerous replays of "How to
set up internet for zones with virtual IP addresses?"
That recipe suggests to add a fake router and maintain its ARP address to be
that of the real default gateway, and set up NAT to rewrite private IP addresses
to the global zone's public IP. While I've also used the recipe a number of times,
it does not seem feasible in this router's case - there are too many next-hop
routers (and learned with a dynamic routing protocol), not just one default-gw.
I can of course go back to running services in the global zone and binding them
to these dedicated public IP addresses via configuration files - and this works
since the global zone has access to any needed routers having IP addresses
in relevant subnets - but I hoped to secure the system a bit more and separate
routing from infrastructure tasks...
So the question is: how can I set up networking for local zones in this case
when they are running on a router? Is it possible?
Thanks,
//Jim

You can set the Airport Extreme in "Bridge" mode, and then it will just extend the existing subnet.
Airport Utility -> Airport Extreme -> Internet -> Connection Sharing -> Off (bridge mode)

Network Analysis

Hi,
We have questions from partner about logistic system
Is possible in Spatial network API solve Traveling Salesman Problem based on following parameters
1. Network Model with (One way, "Turn No Left/Right", Speed Limit(-it probably static param used for pre analysiys cost calculation) )
2. Cost - standard(traveling time or length)
3. arrival time !!!
Example:
We have to deliver the consignment at the following addresses:
adress fixed time of arrival to the client
adr 1 10:15 - 10:30
adr 2 10:30 - 11:00
adr 3 10:15 - 10:45
adr 4 10:45 - 11:00
adr 5 10:30 - 10:45
and the next question is: how do it? :-)
Thx,
Tomek

Tom
Assuming you have appropriate data with Maneuver info.
The Network Model supports the TSP analysis. One-way can be easily modeled on the as the direction (start/end) of the links, I believe.
In order to take the maneuvers into account, you will have to define Network Constraint, which will be evaluated during the analysis.
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14256/sdo_net_concepts.htm#CIHJFIIG
there is an example on the code exampls page of Spatial or on the installation:
http://download.oracle.com/docs/cd/B19306_01/appdev.102/b14256/sdo_net_concepts.htm#CIHDIHEA
After the analisys you can iterate the links that make up your path and have their time calculated based on their cost or other attributes that you have available and aggregate that per address.
Luc
Edited by: lucvanlinden on Sep 10, 2008 2:51 PM

Network analysis tool

Hi,
We are facing some problems on our Datacanter but it is very hard to determine it is related to server or network device. We are looking for a software or appliance that collects all or part of the traffic with SPAN and analyse the traffic. Do you suggest anything for this?

I think that depends on how large is your datacenter, what traffic rates have to be considered and what your budget is.
We have ~8000 logical servers and many hosts with 10Gig nics in our DC .We use the Opnet AppResponse Xpert (formerly known as ACE live) and we are happy with that. It's an appliance with several 10Gig nics and a good (and complex) analysing software.

Basic traceroute EEM script (for hop-by-hop network analysis)

I'd like to do a hop-by-hop analysis by running a traceroute script that runs on an interval (say every 5-15 minutes) and puts output to a file.
The goal is to let the script run for a day, and see what kind of hop changes might occur over time, and also monitor for any latency increase or packetloss at certain times of day (peak hours).
If I used an EEM script to do a basic traceroute from one endpoint of the network to a server in the core (for instance), this could show how a client's path may be impacted during peak hours.
I'd want the output stored in a file on the router's flash disk, and then I'd have to find some way to parse and analyze the output later (not sure how I'd do that, perhaps with excel or another diff-like program).

Something like this should work for you. In config mode, specify three EEM environment variables:
event manager environment traceroute_timer 600
event manager environment traceroute_target 10.1.1.1
event manager environment traceroute_file flash:/traceroute.txt
Then register this EEM Tcl policy:
::cisco::eem::event_register_timer watchdog time $traceroute_timer
namespace import ::cisco::eem::*
namespace import ::cisco::lib::*
array set arr_einfo [event_reqinfo]
if [catch {cli_open} result] {
    error $result $errorInfo
} else {
    array set cli1 $result
if [catch {cli_exec $cli1(fd) "enable"} _cli_result] {
    error $_cli_result $errorInfo
if [catch {cli_exec $cli1(fd) "traceroute $traceroute_target"} _cli_result] {
    error $_cli_result $errorInfo
set fd [open $traceroute_file a]
puts $fd [clock format [clock seconds]]
puts $fd $_cli_result
close $fd
# Close open cli before exit.
catch {cli_close $cli1(fd) $cli1(tty_id)} result

Network Analysis / Documentation

Good day,
I'm wondering what templates / checklists fellow network engineers use when analyzing a network? If you had a job to go in to an unknown network and "map it", what all would you do?
Finding all of the nodes and building a VISIO map is one thing, but what else do you look for to document?-IP Addresses / subnets-VLANs-Loop prevention methods-Security on switches-Physical media-Distance between switches-Firewall Configuration etc etc etc
This topic first appeared in the Spiceworks Community

Just try out these following links.They explain about the predictive planning for deploying a n/w and performance analysis.
http://www.cisco.com/en/US/products/ps6363/index.html
http://www.cisco.com/en/US/products/sw/netmgtsw/products_promotion0900aecd8039e064.html

Network Analysis withinCost & "traction zone" or isochrones

Similar Messages

Maybe you are looking for