---
sourceDocument: Yokohama Telecommunications Service Operations Management
sourceDocumentLink: https://servicenow-prod.fluidtopics.net/r/yokohama/telecom-service-ops

 Release :

    - yokohama

ft:locale :

    - en-US

ft:publication_title :

    - Yokohama Telecommunications Service Operations Management

ft:clusterId :

    - tsom

bundleId :

    - tsom

workflow :

    - Customer and Industry


---

# Telecom Switch Pattern

# Telecom Switch Pattern {#ariaid-title1}

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

The ServiceNow® Telecom Discovery application uses the Telecom Switch discovery pattern to find SNMP-based Telecom switches in the network. Discovering some of these resources requires updating the Telecommunications
Discovery Patterns (TSOM Patterns) from the ServiceNow® Store.

Telecom Discovery uses the Telecommunications Discovery Patterns to run Horizontal Discovery. This Telecommunications Discovery Pattern uses a set of SNMP requests to find, classify, and discover network elements.

Telecom Switch pattern is part of the Telecommunications Discovery Patterns application (sn_tsom_patterns), which is part of TSOM Visibility.

## Request apps on the Store {#telecom-switch-pattern__section_irz_2lk_zdc}

Visit the [ServiceNow Store](https://store.servicenow.com/sn_appstore_store.do#!/store/home) website to view all the available apps and for information about submitting requests to the store. For cumulative release notes information for all released apps, see the [ServiceNow Store version history release notes](https://www.servicenow.com/docs/r/store-release-notes/sn-store-release-notes.html).{#telecom-switch-pattern__inline-send-to-store}

## Prerequisites {#telecom-switch-pattern__section_bq4_vx5_zdc}

* Subscription to TSOM.
* Confirm that your network router devices have SNMP access.
* On the ServiceNow® instance, configure SNMP credentials. For more information, see [SNMP support for Discovery](https://www.servicenow.com/docs/access?context=c_SNMPSupportForDiscovery&version=yokohama&pubname=yokohama-it-operations-management&ft:locale=en-US).
* For setting up TSOM Patterns, see [Configure Telecommunications Discovery (TSOM) Patterns](https://servicenow-prod.fluidtopics.net/nco9q0vAZvRynA_Z0~wUfA#configuring-telecommunications-discovery-patterns "This document outlines the dependencies, requirements, and installation steps necessary for setting up Telecommunications Discovery Patterns (also known as TSOM Patterns) in TSOM Visibility in ServiceNow.").
{#telecom-switch-pattern__ul_lf1_kyn_zdc}

## Impacted CMDB CIs and CI Relationships (Physical Layer) {#telecom-switch-pattern__section_wch_wx5_zdc}

{#telecom-switch-pattern__table_abh_xx5_zdc__entry__2}

| CIs | CI Relationships |
|-|-|
| IP Switch CI | IP Switch Device is represented by the IP Switch CI. Table name: **cmdb_ci_ip_switch** IP Switch CI contain Slots or Network Interfaces. |
| Slot CI | Slots are represented by the Slot CI. Table name: **cmdb_ci_container_slot** Slot is contained by the IP Switch. Slot CI contains the Interface Card. |
| Subslot CI | Subslots are represented by the Subslot CI. Table name: **cmdb_ci_container_subslot** Subslot is contained by Interface Card CI. Subslot CI contains the Interface Card CI. |
| Interface Card CI | Different types of cards are represented by the Interface Card CI. Fan and Power Supply Units are also represented by the Card CI. Table name: **cmdb_ci_interface_card** Interface Cards are contained by Slots or Subslots. Interface Cards can contain Network Interface or Subslots. |
| Network Interface CI | Any type of Network Interface is represented by the Network Interface CI. Table name: **cmdb_ci_ni_interface** Network Interface is contained by Interface Card, IP Switch. |
[ ]

{#telecom-switch-pattern__table_abh_xx5_zdc}

## Classifying xNFs for this Pattern {#ariaid-title2}

To access a full list of OIDs that will be classified.

### Before you begin

Role required: admin

Classifier name: Standard Network Switch.

### Procedure

1. Navigate to AllDiscovery DefinitionCI ClassificationSNMP.
2. From the list, select Standard Network Switch.
3. Open the tab SNMP OID Classifications and see the list of OIDs.  
   Note:  
   For more information on how to add additional OIDs to the classifier, see [Telecom Discovery using Telecommunications Discovery Patterns](https://servicenow-prod.fluidtopics.net/FrwTTYiFXdQLq6ZdWRf_4Q "The new Telecommunication Discovery Patterns (also known as TSOM Patterns) include patterns for discovering standalone xNFs. These patterns enable the discovery of standalone network elements without a management system, using SNMP, CLI, and NETCONF (roadmap) protocols.").  
   MiB Tables Used on an xNF:
   * SystemMIB
   * EntityPhysicalMIB
   * IfMIB
   * IfXMIB
   * IpMIB
   {#classifying-xnfs-pattern-switch-pattern__ul_ofr_d3n_zdc}

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