Cisco Support Community
cancel
Showing results for 
Search instead for 
Did you mean: 
Announcements

Welcome to Cisco Support Community. We would love to have your feedback.

For an introduction to the new site, click here. If you'd prefer to explore, try our test area to get started. And see here for current known issues.

New Member

How long should UT Acquisition take?

My UT Acquisition takes about 4 hours to complete. I have 155 devices, 1929 end hosts. & 2774 IP phones.

Is this normal?

  • Network Management
1 ACCEPTED SOLUTION

Accepted Solutions
Cisco Employee

Re: How long should UT Acquisition take?

Beyond adding all of the IP address for the phones and end hosts to DNS or the hosts file, you will need to figure out where the acquisition is spending all of its time. You can enable vmpsadmin debugging under Campus Manager > Administration > Campus Data Collection > Debugging Options, run a new acquisition, then look at the ut.log to see where the time is being spent.

You should also check ANIServer.properties and make sure you have:

UTGetVlansWithUserPortsIOS=1

If this property is set to 0 or missing from the file, that could cause acquisition to take a long time with IOS switches.

Finally, check your Data Collection SNMP Timeouts and Retries, and make sure they are not set too high. The default is 6 second timeout with 1 retry. I would not go above a 12 second timeout with 2 retries.

11 REPLIES
Cisco Employee

Re: How long should UT Acquisition take?

It can be, yes. There is an issue with the way Windows does name resolution that can seriously hinder acquisition performance. It is recommended that all end host IP addresses resolve either in DNS or the local hosts file.

For Solaris, this sounds a bit steep, but without a debug log it's impossible to know where the acquisition is spending its time.

With either OS, misconfigurations can increase acquisition time. And if SNMPv3 is being used, certain switches (e.g. XL and 2950 series) may not respond properly.

New Member

Re: How long should UT Acquisition take?

Thanks for the info.

I'm running Win3k server with LMS 2.6. Most of the end hosts are in DNS. I do not use SNMPv3.

Is there anything I can do to improve performance?

Cisco Employee

Re: How long should UT Acquisition take?

Beyond adding all of the IP address for the phones and end hosts to DNS or the hosts file, you will need to figure out where the acquisition is spending all of its time. You can enable vmpsadmin debugging under Campus Manager > Administration > Campus Data Collection > Debugging Options, run a new acquisition, then look at the ut.log to see where the time is being spent.

You should also check ANIServer.properties and make sure you have:

UTGetVlansWithUserPortsIOS=1

If this property is set to 0 or missing from the file, that could cause acquisition to take a long time with IOS switches.

Finally, check your Data Collection SNMP Timeouts and Retries, and make sure they are not set too high. The default is 6 second timeout with 1 retry. I would not go above a 12 second timeout with 2 retries.

New Member

Re: How long should UT Acquisition take?

Thanks,

Im good with "UTGetVlansWithUserPortsIOS=1" and my SNMP is thr default.

I did check my ut.log file where most time is spent on DNS. I will investigate.

One other thing I noticed I'm missing many of my network subnets in "user tacking\admin\acquisition\config subnet" When I look in common services "groups\campus\system defined\subnet based groups" I see all of my subnets.

Do you have any idea why?

Cisco Employee

Re: How long should UT Acquisition take?

The subnets for the UT list are pulled from a UT acquisition. Therefore, you need to perform a complete major acquisition, and find end hosts in all desired subnets.

Compare that with the Campus Manager groups list of subnets. That list is compiled based on Campus Manager Data Collection.

New Member

Re: How long should UT Acquisition take?

I have been doing major acquisition for weeks, but still missing many subnets. I have devices in cm inventory from all of the missing subnets.

Thanks for your help I unchecked "Get user names from hosts in NT and NDS domains" and my acquisition went from 4 hours to 10 min.

Cisco Employee

Re: How long should UT Acquisition take?

It doesn't matter if you have devices in Topology from the missing subnets. What matters is if you have end users in User Tracking in those subnets.

New Member

Re: How long should UT Acquisition take?

I do have end users on missing subnets. What can I do to troubleshoot?

Cisco Employee

Re: How long should UT Acquisition take?

The same vmpsadmin debugging does some things for building the subnet map. However, things to check are that the missing subnets have valid VLAN and VTP names associated with them.

173
Views
15
Helpful
11
Replies
This widget could not be displayed.