Joint webinar from Cisco & ManageEngine on QoS
Enterprises as well as service providers typically use a single IP network to carry data, voice and video traffic, be it business critical or otherwise. When different applications, which include mission critical, bulk data, scavenger traffic and latency sensitive applications like voice and video, converge over the same link, application delivery takes a hit. Congestion, delay and packet loss seriously impacts the performance of your business applications and affects the quality of your voice and
NFA Professional Edition - Performance tuning tips
We sometimes hear from our customers that the client response is slow and the reports are taking longer time to get generated. Database tuning: The database parameters for NetFlow Analyzer are tuned to work well with 1 GB of RAM and in cases where you are running with more RAM on 32 Bit or 64 Bit server, you can easily tune the MySQL parameters to extract better performance. This can result in SIGNIFICANT improvements in the client response. These parameters can be set in startDB.bat file present
NetFlow Analyzer 9.5 and Cisco ASA 8.4
Hello all, we are evaluating to migrate all our monitoring's infrastructure to ManageEngine so we are testing some apps.. in this case i'm testing netflow analyzer. I've configured an ASA to export all traffic flow to the collector, the flow are correctly received but all Applications, Sources and Destinations are "Unaccounted" with this message: Total Traffic value is available upto the second and application data is loaded once in 3 minutes in the database. This difference is listed as unaccounted.
Mysql Process crash often
Hi we have Netflow Analyzer 9 professional plus on Linux 2.6.32-5-amd64 with 4096Mo Ram (virtual machine). We have tunning with parameter "For a machine running with 3 GB of RAM or more, you can set these to --key_buffer_size=820000000 --innodb_buffer_pool_size=948000000 --bulk_insert_buffer_size=48000000, # Maximum Java Heap Size (in MB) wrapper.java.maxmemory=1024 and -Xmx512m" to -Xmx1024m." But the Mysql Process crash every day. Can you help us to stabilize the installation?.. thx
netflow analyzer 9.6 startup issues with Centos 6.2
I am getting the following message when trying to start the service. Server is starting. This may take a couple of minutes ... Failed to start the server. Please refer logs for more details If I run the shutdown.sh script I get this message: Exception in thread "main" javax.naming.CommunicationException: Could not obtain connection to any of these urls: localhost:1099 [Root exception is javax.naming.CommunicationException: Failed to connect to server localhost:1099 [Root exception is javax.naming.ServiceUnavailableException:
IP SLA Schedule
Currenly testing IP SLA in my testbed and I have noticed that the IP SLA schedule gets removed once you reboot the router. Not a ManageEngine issue, more a Cisco one but I wanted to know if you have seen this before. Obviously with no schedule the IP SLA stops gathering data. Regards Bill
netflow analyser issue
Hi, I have installed netflow analyser 7.0 Professional. I have configured netflow v9 on my 2911 and 3911 routers, but i am receiving error :"V9 flows of unknown template are received from " and i am not able to see traffic flows from these devices in netflow analyser. I have done the following configuration : interface GigabitEthernet0/2 ip flow ingress ip flow egress ip flow-cache timeout active 1 ip flow-export source GigabitEthernet0/2 ip flow-export version 9 origin-as ip flow-export template
Dashboard issue
When we take a "6 hour" report from the default dashboard ("Network Snapshot"), the speed value from "Top Devices by Speed pie Graph" widget is too high, the value can't be true. By example, when i take an Hourly report, the value is 76.04 Mbps. When i take a 6 hour report, the value is 674.37 Mbps. Do you know how to fix it ? Thank you, Kevin
Fix: Google Maps issue for NetFlow Analyzer
Many of you who use or installed NetFlow Analyzer BUILD 9600 must have noticed that the Google Maps feature had stopped working. This happened because NetFlow Analyzer was using Javascript API Version 2 and Google decided to deprecate this version with the introduction of Javascript API Version 3. You can view details of this from the below link: https://developers.google.com/maps/documentation/javascript/ NetFlow Analyzer BUILD 9600 now supports Javascript API Version 3 through a feature pack so
Change Goolge Maps API Key
I accidentally entered in the wrong API into NetFlow Analyzer and I need to change it. I can't seem to find where I would do this anyway, please help. Thanks, Robert Brown
Monitoring 3Com switches
Hi, Can netflow 9500 be used to monitor 3com SuperStack 4 Switch 5500G-EI. I am interested in getting reports that includes src/dst IPs, protocols used and bandwidth Regards, Ramzi
Traffic limit alarm.
Hi. We have a question. If we have limited (month traffic) Internet connection, can we create some kind of alarm or notification, which will send us e-mail about exeeding volume of incoming traffic on router interface? May be it could be done in OpManager? Thanks.
Netflow process stops
Dear Sir, We have netflow version 9.5 build 9500 that stops nearly once a week and it requires to stop and restart the netflow application for it to work. The server is Red Hat Enterprise Linux Server release 6.2 (Santiago) Any suggestion on how we can prevent this. Regards, Ramzi
Barracuda NG Firewall firmware 5.2.3 now supports IPFIX export
Barracuda announced the release of Barracuda NG Firewall firmware 5.2.3 and the good news for us is the inclusion of IPFIX support. View the announcement from Barracuda product blogs below: http://blog.barracuda.com/pmblog/index.php/2012/03/14/barracuda-ng-firewall-5-2-3-firmware-released-2/ For complete release notes on this firmware and to know about IPFIX export, check the link below: http://www.barracuda.com/ns/downloads/Other/Barracuda-NG-Firewall_ReleaseAndMigrationNotes_5-2-3.pdf ManageEngine
Ask the Expert: Post your questions on NetFlow Analyzer 9.6
Welcome to Ask the Expert discussion. The current topic coincides with the release of our latest product version, NetFlow Analyzer version 9.6 BUILD 9600. You can find the list of new features available in BUILD 9600 from the below link: http://www.manageengine.com/products/netflow/netflow-analyzer-new-features.html Use this discussion to post questions regarding NetFlow Analyzer 9.6 - you can discuss about the new product features, existing features, issues or anything at all in your mind regarding
Can i used NetFlow Analyzer v9 on non CISCO device?
Hello Sir, I want to used NetFlow analyzer on home PC. I have broadband connection to access internet. The service provider is Bharti Airtel , my router is BEETEL 110BX1 series , it is a ADLS2+ROUTER. I want to know how to configure Net flow analyzer on this device. For Ur convenient , i have already started SNMP SERVICE on my windows XP machine. plz help me, i have tried a lot, but unable to configure NetFlow. Plz tell how i will be able to do this, without CISCO router or devices.
Source and Dest IP Address showing as 0.0.0.0/24
Hi All, I have just started using Manage Engine Netflow reporting, netflow packets successfully get to the collector. However, IP addresses on the reports show up as 0.0.0.0/24 (correct subnet mask). Is anyone able to help me with this issue? Regards, Sarah
ManageEngine Webinar: "NetFlow - The De Facto Standard for Traffic Analytics" - Recording and Presentation
For those who missed ManageEngine's last webinar, "NetFlow - The De Facto Standard for Traffic Analytics", the recording is now available online. Check out the youtube link below: You can download a copy of the presentation used during the webinar from the below link: http://www.manageengine.com/products/netflow/netflow-webinar.pdf Questions? Feel free to post them and our TAC team will respond. Regards, Don Thomas Jacob
Netflow Network Storm
Ok... so this is a weird issue... we have about 43 routers reporting to our netflow server. When we take the server offline for a time frame of about 10 minutes we start to experience a MAJOR Network storm. Looking at PRTG and (setting up a secondary netflow) it appears that when the server goes offline ALL the devices immediatley start KILLING the network like utilization goes up 500% and its all focused on traffic trying to go to the netflow device. Has anyone seen this? This is our
URL Monitoring
Hi, Does anyone know if the monitoring of URLs for Internet sites will be supported on Netflow Analyzer anytime soon? I've seen and heard that Cisco's Flexible Netflow allows this information to be exported and this would be an excellent addition to the product.
simultaneous tcp connection in router
how i can do to know the number of simultaneous tcp connection in router on netflow?
AH_App protocol interpretation
I have installed netflow to trace the reason for my line congestion. What I can find from the results is that AH_App is utilizing more than 60% of my bandwidth, the source being the serial interface of the router and destination the serial interface of the remote router. I cannot understand what traffic is this. I have IPSec site to site VPN configured between both routers. Can you help please...Its urgent network is congested and I cant understand the protocol in question.
NetFlow Analyzer supports Network Analysis Module(NAM)?
Hi, Can I use NetFlow version 9 data from NAM in NetFlow Analyzer? In NAM, I configured NetFlow data export to NetFlow Analyzer. It seems that NetFlow Analyzer receives data from NAM, I can see the graph of the whole traffic, but couldn't see the details of traffic such as source ip address, destination ip address. How can I see the details? I didn't configure any filters. Thanks, Narae
Neflow Analyzer 9: not starting
Im installing "ManageEngine NetFlow Analyzer 9", when I start it via "/etc/init.d/netflowanalyzer start" it says: # /etc/init.d/netflowanalyzer start exec: 274: ./wrapper: not found The strange thing, that i have exe! binary in my "bin" folder ls -la /opt/ManageEngine/NetFlow/bin/wrapper.exe -rwxrwxr-x 1 root root 126976 Nov 11 15:14 /opt/ManageEngine/NetFlow/bin/wrapper.exe
DNS resolution to wrong name
Hi, Am using Netflow EE 7.7 version. In that i can able to see the IPs are resolving to wrong names. I would like to know how netflow manages to get the DNS information and how this DNS resolve happens? Kindly share the solution. Jayanth.
wrong interface speed @ 10gbit
Hi, it seems, that netflow analyzer (7.7) still have problems with highspeed interfaces, cause it use the wrong mib. So if u have 10gbit ports and u update snmp device values, u always have to manually set the correct interface speed at 10 gbit ports or it only get about 4gbit (max of 32bit). regards
IP resolves to the old Name
Hi, I would like to know, from where Netflow pulls the DNS details. Since in my environment, i can see the DNS resolution is not happening right!!. The IP to Name resolution is not matching to that of current DNS entry. Kindly clarify!!!
Webinar - 'NetFlow - The De Facto Standard for Traffic Analytics'
With ever-growing enterprise networks, a lot of concerns arise with regard to network usage. Traffic analytics becomes a key aspect in order to ensure: * Productive usage of the network bandwidth * Secure network * Continuous availability of the network and a lot of other associated factors. The dependence on the network is ever-increasing. This dependence in a way boosts productivity of the organization but the flip-side is that the bandwidth usage for applications other than that concerning business
BGP
Hi, how do I activate the Autonomous system reporting option in Netflow 9.5 build 9500. I cannot see this reporting option anywhere in the Web Interface. Regards, Ramzi
Receiving Flow / Not Receiving Flows
We currently have Netflow v9.6 and and I receive random e-mail notifications from Netflow stating that it's not receiving Flows from a particular remote router interfaces (mostly LAN, sometimes WAN). 15 minutes later, I receive another e-mail stating that it's receiving flows once again. During this time, there is WAN no outage... just not receiving flows. We have ~55 remote routers that we monitor using Netflow but only this device reports issues. I've had our managed service provider check the
Cisco 6500 L3 interfaces misreporting Netflow stats
We are having an issue with our Cisco 6500 L3 interfaces that are being monitored for netflow where we are seeing false bandwidth utilizaiton data when compared using our other bandwidth monitoring tools.
Client opens on server when Netflow Analyzer 7.5 service starts.
Hi, Netflow Analyzer 7.5 Build 7600. Runs as service on Windows 2003. I don't want the client (browser) to fire up when the service starts. Is there a way to do this? Thanks, Shawn
could not connect to mysql DB
dear all, i tried to login to the netflow web page, all accounts are unaccessible, tried to stop the DB from ./stopDB i faced the error below: /opt/ManageEngine/NetFlow/bin/../mysql/bin/mysqladmin: connect to server at 'localhost' failed error: 'Can't connect to local MySQL server through socket '/opt/ManageEngine/NetFlow/bin/../mysql/tmp//mysql.sock' (111)' Check that mysqld is running and that the socket: '/opt/ManageEngine/NetFlow/bin/../mysql/tmp//mysql.sock' exists! please help regards Bahaa
NetFlow Analyzer - Server to Server Migration
NetFlow Analyzer can be migrated to a new server with older data and configurations with certain conditions. Given below are the steps to migrate the installation and database to a different server. In regards to the license part, please copy the license file named as "AdventNetLicense.xml" present under <NetFlow_Home>/lib folder, and save it in a safe location. Once you moved to the new server, please find the following steps to apply the license file: 1. Log in to the NetFlow Analyzer web client
i m not able to see the Netflow data in manage engine.
I have a cisco 2821 router with ios 12.4,i have done all the setting recommended by manage engine netflow analyzer. in the router for netflow. router#configure terminal router-2621(config)#interface FastEthernet 0/1 router-2621(config-if)#ip route-cache flow router-2621(config-if)#exit router-2621(config)#ip flow-export destination 192.168.9.101 9996 router-2621(config)#ip flow-export source FastEthernet 0/1 router-2621(config)#ip flow-export version 5 router-2621(config)#ip flow-cache timeout
Change server IP address after data migration
dear all, i migrate netflow analyzer from an old server to a new one, and all data and DB has been successfully copied. i just want to ask you if its possible to change the new server IP and what about the old data, will be affected? regards Bahaa bacharouch
Netflow Analyser
In looking at the traffic on one of my interfaces, ManageEngine is shows a good bit of bandwidth used by a application classified as "prat". Google doesn't return anything that makes sense on this, does anyone have any idea what "prat" means or signifies? Thanks Tommy
ManageEngine NetFlow Analyzer 9600 released!
Team NetFlow Analyzer is glad to announce the release of NetFlow Analyzer 9600. The new features include: 1) Enhancements in Advanced Security Analytics Module * IPV6 support * Anomaly detection based on source and destination network * 'Ignore events' option for all resources 2) Multicast IP Traffic reporting * IP Multicasting allows a host to send packets to a specific group of hosts 3) Mediatrace OnDemand * Analyze media flow (TCP and RTP), on the go. * No pre configuration
NetFlow on C3560
Anyone have any success getting netflow to export on Cisco 3560 (c3560-ipbasek9-mz.122-58.SE2)? Thanks in advance.
Device Groups contains old entries
Good afternoon, We have device groups in our installation for different areas of IT so they view only what they need. When I go into Device Groups and modify a group, the list of Available Routers still shows routers that are no longer in our environment. Is there a way to refresh this information? If it helps, we are running Professional 9.1 Build 9100. thanks.
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