No Data Available for Cisco 1941

johnisccp · Post by **johnisccp** » Mon Aug 31, 2015 9:12 am

I am newbie and download the demo version of Network Analyzer. My NNA is located in EST timezone and the Cisco 1941 Router is located in PST timezone. I configure the netflow on the router to send data to the NNA server and nothing is showing up. I ran several ping command and internet traffic from the router but I do not see any data showing up on NNA. Does it take a long time to generate the data to show up on the dahsboard? I try to restart the NNA couple times but got the same results with no data. Please help anyone.

Thanks in advance.

Post by **tgriep** » Mon Aug 31, 2015 9:21 am

Is the Cisco 1941 running Netflow v9? Sometimes there compatibility issues with that and the software needs to be recompiled to fix this.
Please run the following on the NA system.

Code: Select all

cd /tmp
wget http://sourceforge.net/projects/nfdump/files/stable/nfdump-1.6.13/nfdump-1.6.13.tar.gz/download
tar xzf download
cd /tmp/nfdump-1.6.13
./configure --prefix=/usr/local --enable-sflow --enable-nsel --enable-nfprofile --enable-nftrack
make
make install

Restart the system and see if that resolves it.
If not, can you post the netflow settings for the Cisco 1941?

johnisccp · Post by **johnisccp** » Mon Aug 31, 2015 9:46 am

The cisco router is running version 9 with IOS 15.0(1)M6. Here is the output of the netflow. I restarted the NNA and no data.
enable
configure terminal
interface gi 0/0
ip route-cache flow
exit
ip flow-export 192.168.5.191 9912 version 9
ip flow-export source gi 0/0
exit
clear ip flow stats

johnisccp · Post by **johnisccp** » Mon Aug 31, 2015 9:56 am

Ok I got data to show under Top 5 Talkers but I am still getting No Data Available for graphing. Does that take some time or am I missing something?

Thanks

Post by **tgriep** » Mon Aug 31, 2015 9:58 am

The graph takes about 15 to 20 minutes to populate.

johnisccp · Post by **johnisccp** » Mon Aug 31, 2015 10:03 am

The weird thing is happening where I am back to square one where there is no data in Top 5 Talkers. All I did was reboot the NNA system and login. It was showing data so I am unsure what is going on now.

johnisccp · Post by **johnisccp** » Mon Aug 31, 2015 10:05 am

Here is the ip flow export output
SF_1941_1#sho ip flow export
Flow export v9 is enabled for main cache
Export source and destination details :
VRF ID : Default
Source(1) 192.X.XX (GigabitEthernet0/0)
Destination(1) 10.X.X.X(9912)
Version 9 flow records
1241 flows exported in 71 udp datagrams
0 flows failed due to lack of export packet
0 export packets were sent up to process level
0 export packets were dropped due to no fib
0 export packets were dropped due to adjacency issues
0 export packets were dropped due to fragmentation failures
0 export packets were dropped due to encapsulation fixup failures

johnisccp · Post by **johnisccp** » Mon Aug 31, 2015 10:08 am

Sorry I was too impatient. It finally show up data after 5 minutes. I thought it would show up right away. Is there something I should run on the router so it wouldn't overwhelm or cause the router to become degraded sending too much info to NNA?

Post by **tgriep** » Mon Aug 31, 2015 10:22 am

I don't believe that there are any settings needed to be set on the router. It is only sending the statistics of the traffic flow and not the actual traffic so it shouldn't overwhelm either system.

johnisccp · Post by **johnisccp** » Mon Aug 31, 2015 10:25 am

Awesome. Thanks for your help.

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