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# Configuring the SNMP Server on the JUNOSe Router

Access to the SNMP server on the router by an SNMP client is governed by a proprietary SNMP community table. This table identifies communities that have read-only, read-write, or administrative permission to the SNMP Management Information Base (MIB) stored on a particular server.

When an SNMP server receives a request, the server extracts the client’s IP address and the community name. The SNMP server searches the community table for a matching community.

- If a match is found, its access list name is used to validate the IP address.
  - If the access list name is null, the IP address is accepted.
  - If an invalid IP address results, an SNMP authentication error is sent to the SNMP client.
- If a match is not found, an SNMP authentication error results.

To configure the SNMP agent on the JUNOSe router:

1. Switch to the virtual router for which you want to create an SRC client.
   `
   host1#(config)virtual-router <vrName>
   `
2. Enable the SNMP agent.
   `
   host1:<vrName>#(config)snmp-server
   `
3. Configure at least one authorized SNMP read-write community (SNMPv1/v2c), which provides SNMP client access.
   `
   host1:<vrName>(config)#snmp-server community boston rw
   `
4. (Optional) Configure a read-only community.
5. host1:<vrName>#(config)snmp-server public ro

#### Related Topics

- How SNMP Obtains Information from Routers for the SRC Software
- Configuring Global SNMP Communities in the SRC Module (C-Web Interface)
- Starting the SRC Client on a JUNOSe Router
- Adding JUNOSe Routers and Virtual Routers (C-Web Interface)
- Configuring the SNMP Agent

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