Solved

ARP going nuts?

Posted on 2013-01-04
2
317 Views
Last Modified: 2013-03-01
I have an Android phone connected to company Wi-Fi.  I noticed recently the download arrow is always on.  A little research shows that this is due to broadcast and/or multicast traffic.  I fire up Wireshark and notice something seems to be up with extremely high ARP traffic (~75%).  I did install a new AD / DNS server a few weeks ago.  This could have started at the same time?

Capture1There is no recurring themes with the source & destination.  It varies a ton.

Any ideas to look for?

thanks
0
Comment
Question by:admineo
2 Comments
 
LVL 13

Accepted Solution

by:
Ugo Mena earned 500 total points
ID: 38744562
How many devices would you estimate are using your wireless network? And what type of switch is the WAP connected to?

If the number of devices using wireless is high, and clients are constantly connecting/disconnecting from the network, you can assume that the ARP traffic (broadcasts, probes and announcements) will be very high.
0
 

Author Comment

by:admineo
ID: 38750701
Sorry for the slow response - had a busy weekend.  

We only have about 20-30 wireless devices spread over 4-5 AP's.  They are connected to L2 HP switches.  

We have some VLAN segmentation.... but something doesn't seem right.
0

Featured Post

3 Use Cases for Connected Systems

Our Dev teams are like yours. They’re continually cranking out code for new features/bugs fixes, testing, deploying, testing some more, responding to production monitoring events and more. It’s complex. So, we thought you’d like to see what’s working for us.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Creating an OSPF network that automatically (dynamically) reroutes network traffic over other connections to prevent network downtime.
The use of stolen credentials is a hot commodity this year allowing threat actors to move laterally within the network in order to avoid breach detection.
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…
After creating this article (http://www.experts-exchange.com/articles/23699/Setup-Mikrotik-routers-with-OSPF.html), I decided to make a video (no audio) to show you how to configure the routers and run some trace routes and pings between the 7 sites…

810 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question