Solved

quick Netflow question

Posted on 2009-05-04
3
301 Views
Last Modified: 2012-05-06
Is it best practice to enable netflow on internal or external interfaces.
Also, which direction?

We have a few remote sites connecting back to us via MPLS. I am monitoring their serial interfaces (in the ingress direction). Is this sufficient to analyze bandwidth utilization? Or should I montior egress too?

thanks
0
Comment
Question by:dissolved
  • 2
3 Comments
 
LVL 43

Accepted Solution

by:
JFrederick29 earned 500 total points
ID: 24295850
Typically you enable Netflow on both the internal (LAN) and external (WAN) interfaces since it collects ingress.  You can enable egress collection on newer IOS but it does the same thing as collecting inbound on both the LAN and WAN interfaces.

So, either monitor ingress and egress on the serial or monitor ingress on the LAN and WAN interfaces.  When monitoring bandwidth, you should monitor both ingress and egress so you can monitor upload and download bandwidth utilization.
0
 

Author Closing Comment

by:dissolved
ID: 31577566
great, thanks
0
 

Author Comment

by:dissolved
ID: 24297438
J, can you please look at this? I posted the config from our headend ASA. Can you tell me if there is anything in this config, which would cause the ASA to drop all VPN connections every hour or so?

http://www.experts-exchange.com/Security/Software_Firewalls/Enterprise_Firewalls/Cisco_PIX_Firewall/Q_24378722.html
0

Featured Post

Control application downtime with dependency maps

Visualize the interdependencies between application components better with Applications Manager's automated application discovery and dependency mapping feature. Resolve performance issues faster by quickly isolating problematic components.

Question has a verified solution.

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

Suggested Solutions

Title # Comments Views Activity
Ghost Calls on Cisco Video Conference System 5 64
Cisco Router 1841 internal memory 2 53
Routing VLANs 5 69
Read-only SNMP string example ? 7 73
We've been using the Cisco/Linksys RV042 for years as: - an internet Gateway - a site-to-site VPN device - a leased line site-to-site subnet-to-subnet interface (And, here I'm assuming that any RV0xx behaves the same way as an RV042.  So that's …
There are two basic ways to configure a static route for Cisco IOS devices. I've written this article to highlight a case study comparing the configuration of a static route using the next-hop IP and the configuration of a static route using an outg…
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…

910 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

Need Help in Real-Time?

Connect with top rated Experts

16 Experts available now in Live!

Get 1:1 Help Now