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How to Configure Network Discovery
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Updated: November 1, 2009
Applies To: System Center Configuration Manager 2007, System
Center Configuration Manager 2007 R2, System Center
Configuration
Manager 2007 R3, System Center Configuration Manager 2007 SP1,
System Center Configuration Manager 2007 SP2
The Network Discovery method can generate significant network
traffic depending on the type of discovery being run, so you should
schedule
the discovery to occur at times when this network traffic will
not adversely affect business uses of your network. For more
information on the
types of Network Discovery and their impact on your network, see
About Network Discovery.
You must have Modify permission for the Site Security object
class to configure this discovery method. For more information
about
security permissions, see Classes and Instances for Object
Security in Configuration Manager .
How to configure Network Discovery
In the Configuration Manager console, navigate to System
CenterConfiguration Manager / Site Database / Site Management
// Site Settings / Discovery Methods.
1.
Right-click Network Discovery, and then click Properties.2.
Enable the discovery method if it is not already enabled.3.
On the General tab, select the type of discovery you want to
run. Three types are available:
Topology
Topology and client
Topology, client, and client operating system
4.
If you are working with a slow network, select the Slow Network
check box under Network speed.
Selecting the Slow network check box will allow Configuration
Manager to make allowances for a slower network by doubling
SNMP timeouts and reducing the number of SNMP sessions. This
might increase the duration of the discovery, however.
5.
On the Subnets tab, select the Search local subnets check box if
you want to run discovery on those local subnets. This option
is
normally selected by default.
6.
If you want to run discovery on subnets in addition to (or
instead of) your local subnets, click the New icon.
In the New Subnet Assignment dialog box, enter the Subnet and
Mask information, ensure that the Enable subnet search check
box is selected, and then click OK.
7.
On the Domains tab, select the Search local domain check box if
you want to run discovery on the local domain. This option is
normally selected by default.
8.
If you want to run discovery on domains in addition to (or
instead of) your local domain, click the New icon.
In the Domain Properties dialog box, type the name of the domain
to be searched in the discovery in the Domain box, ensure that
the Enable domain search check box is selected, and then click
OK.
9.
On the SNMP tab, specify the SNMP communities to include in the
discovery and place them in the order in which you want to
search.
Network Discovery uses SNMP community names to gain access to
routers that are SNMP devices. Gaining access to a routerinforms
Network Discovery about other routers and subnets linked to the
first router. SNMP community names are similar to
passwords and Network Discovery can get information only from an
SNMP device for which you have specified a community name.
Each SNMP device can have its own community name, but often the
same community name is shared among several devices.
Additionally, most SNMP devices have a default community name
ofPublic (in addition to any others they have). This name can
often be used if you do not know any other community names.
However, some organizations delete the Public community name
from their devices as a security precaution.
10.
If you want to run discovery on SNMP communities in addition to
those displayed, click the New icon.
On the New SNMP Community Name dialog box, type the name of the
community to be searched and then click OK.
11.
From the Maximum Hops drop-down list, select the maximum number
of router hops for the discovery run to make. For more
information on the impact of the number of router hops you
select, see About Router Hops in Network Discovery.
12.
If you want to use specific SNMP devices to discover resources
with, make sure they are listed on the SNMP Devices tab. If they
are13.
to Configure Network Discovery
http://technet.microsoft.com/en-us/library/bb680
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2012 Microsoft. All rights reserved.
not displayed, click the New icon, and in the New SNMP Devices
dialog box, type the IP address or name of the specific device
and
then click OK.
Specifying an SNMP device will provide information to Network
Discovery of other routers and subnets linked to that device.
Any device name used must resolve to a valid IP address.
On the DHCP tab, specify any DHCP servers to use to discover
DHCP clients if desired.
To add a new DHCP server to the list, click the New icon and in
the New DHCP Server dialog box, type the IP address or
resolvable
name of the DHCP server, and then click OK.
If the server that is running Network Discovery is using a
static IP address instead of leasing one from a DHCP server,
Network
Discovery will not communicate with any DHCP servers unless you
specify them on the DHCP tab of the Network Discovery
Properties dialog box.
For more information on the limitations of using DHCP servers
for Network Discovery, see About DHCP Servers and Network
Discovery.
14.
To use the site server's DHCP server for discovery, select this
check box.15.
On the Schedule tab, click the New icon to set a schedule for
running the configured Network Discovery. Generally, Network
Discovery
generates a large amount of network traffic. You should take
this fact into consideration when scheduling the discovery.
If multiple schedules are displayed on the Schedule tab at the
same time, all schedules will result in a run of Network Discovery
as
it is configured at the time indicated in the schedule. This is
also true for recurring schedules.
16.
Click OK.17.
After running Network Discovery, verify that the discovery is
complete.
For more information on doing this, see How to Verify that
Network Discovery is Complete.
18.
See Also
Tasks
How to Determine Your Network's Topology
How to Verify that Network Discovery is Complete
Concepts
About Network Discovery
For additional information, see Configuration Manager 2007
Information and Support.
To contact the documentation team, email
[email protected].
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to Configure Network Discovery
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