Network Choaking Issue

Posted on 2011-04-26
Medium Priority
Last Modified: 2012-06-21
Hi Team,

Kindly Suggest me what should i follow the Guidelines when LAN Choaks as we are not having proper monitor Tools & Friendly Troublehooting softwares

We are using  Ethereal & Wireshark  softwares but it is not helping us in a Friendly manner and the statistics is not good.If you suggest the above softwares try to provide how  can i use in a Proper manner to get the issue to be resolved

Our Network scenario is

a) All Project rooms are centrally connected to the one Core switch 4510 series with  fiber
b) No VLANs , all are in default-VLAN

c) No access-lists /  DHCP server configuration / No secured configuration ,it is default plane configuration

1) How to find out which system causes the Network Choak and also suggest a good Monitoring Software which can easily identifies the PC/server .

2) Through any Cisco Switch command can i find the Network Choak.

3) What is you recommondded configuration do i need at Central switch to overcome the issue

4) Suggest any scenario modification so that we will plan to change accordingly

5) Suggest good software which will show the Network perfomence and Deffected systems

It is high importance request from me.Pls help on this regard with a Helpful commments and also let me know if you want any other info from me


Question by:RAMU CH
LVL 10

Expert Comment

ID: 35465870
Have u tried using netflow?

Accepted Solution

SjoerdvW earned 2000 total points
ID: 35465895
What do you mean with LAN Choaks? Can it be a broadcast storm generated by a topology loop?
You say u use a default plane configuration. I would (at least!) configure spanning-tree to detect these loops and block the ports generating this loops.

Furthermore i would recomend Cacti to monitor the bandwidth usage of you're uplinks. When using CactiEZ(http://cactiez.cactiusers.org/) you hava a server up and running in 10 minutes. Its not as detailed as Ethereal or wireshark (You dont see witch traffic, only some graphs of bandwidth usage), but you can get an pretty good impression how many traphic flows through you're network. Configure you're switches with an IP and enable SNMP and you can easely monitor them with Cacti.

Author Closing Comment

ID: 35858940

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