---
sourceDocument: Yokohama IT Operations Management
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/yokohama/it-operations-management

 Release :

    - yokohama

ft:locale :

    - en-US

ft:publication_title :

    - Yokohama IT Operations Management

ft:clusterId :

    - itom

bundleId :

    - itom

workflow :

    - Technology


---

# View the network or storage path in classic Service Mapping

# View the network or storage path in classic
Service Mapping {#ariaid-title1}

* Release version: Yokohama
* 
* Updated January 30, 2025
* 
* ![](https://www.servicenow.com/docs/portal-asset/ico-clock) 2 minutes to read

You can drill down to see objects behind a connection on a map for troubleshooting
service performance or maintaining your network. This feature is not available for manually
created services or for services on instances using Edge Encryption.

## Before you begin

Role required: admin, service_mapping_admin or service_mapping_user

## About this task

Displaying a network or storage path allows you to see routers, switches, and host ports which are part of the connection. The following connection types exist:

Network path
:   The infrastructure route between two CIs of the host type.

Storage path
:   The infrastructure route between a CI of the host type and a CI of the
    storage type.

Service Mapping discovers and
displays network devices located on your organization local network, not on WAN or
the public cloud. When Service Mapping encounters a
connection between two applications, it uses traceroute on the source host to figure
out the path to the target host. Then Service Mapping use SNMP
credentials to discover the devices it found on the path.  
Service Mapping can show devices for storage paths using the following protocols:

* Fiber Channel: Storage Area Network (SAN)
* IP Ethernet: Internet Small Computer Systems Interface (iSCSI) or Network Attached Storage (NAS)  
  Note:  
  For storage paths using Fiber Channel, Service Mapping does not display Fiber Channel switches.
{#t_CheckNtwrkStrgPath__ul_shx_rgl_zdb}

Between a host CI and a storage CI there may be two separate storage paths using
different protocols: Fiber Channel and IP Ethernet. If so, the service instance map displays one connection line for both protocols.

You can see the change history for network and storage paths for application
services. Checking path history for manual or technical services is not
supported.

## Procedure

1. Open the service instance map.
   1. Navigate to AllCSDMManage Technology Management ServicesService Instance. {#t_CheckNtwrkStrgPath__NavigateCSDMManageTechServiceAppService}
   2. Select the needed service instance.
   3. On the service instance page, select View Map.
   {#t_CheckNtwrkStrgPath__substeps_xxr_jpz_dmb} {#t_CheckNtwrkStrgPath__Cmd_NavigateToAppServicesSM}
2. On the map, right-click the connection for the network or storage path you want to see.
3. Select Show network path or Show storage path.
4. If necessary, select the type of protocol and click Choose in the Choose Protocol Type dialog box.  
   The view showing the network or storage path opens in a new tab.  

   <br />

   If Service Mapping
   cannot discover all objects in a connection, the connector line on the
   network or storage path appears dotted as shown above.
5. For storage paths, use the Storage Mapping tab at the bottom of the screen to view correlation between file systems on the host and the storage volume or the shared folder on the storage device.
6. To view the change history for network paths, perform steps in [View the change history of application services in classic Service Mapping](https://servicenow-prod.fluidtopics.net/7KUinl4tyc2YyKqLg0fVSw "You can view the changes made to an application service as a whole and to the individual configuration items (CIs) comprising the service. Change history is useful for maintenance, planning, or troubleshooting procedures.").
7. If you access the network or storage path map from Event Management, you can see the list of alerts related to this path appear at the bottom of the screen.
**Related concepts**   

* [Application service maps in classic Service Mapping](https://servicenow-prod.fluidtopics.net/pCozfOTzAZRGqwN_KEJkIw "Maps offer you a visualization of data on configuration items (CIs) comprising application services, and relations and connections between these CIs.")  
**Related reference**   

* [SNMP-based queries](https://servicenow-prod.fluidtopics.net/i~OdnnBU3qVn3Zv1buptEA "Service Mapping accesses network infrastructure devices like load balancers and routers using Simple Network Management Protocol (SNMP) v1/v2c/v3. Configure SNMP community credentials to enable this type of access.")

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