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Read-write community

As explained in Acing the CCNA Exam: Volume 2 Advanced Networking and Security

A read-write community is an SNMP community type that permits both retrieval of management information and configuration changes.

A read-write (RW) community is an SNMPv1 or SNMPv2c community string that permits an NMS to retrieve management information with Get, GetNext, or GetBulk and change the device with Set. section 6.3.1

Operational behavior:

  • Accepts Get requests carrying either an RO or RW string, but accepts Set requests only with the RW string. section 6.3.1
  • Supports an optional ACL that limits which NMS sources may use the community. section 6.3.1
  • Uses the Cisco IOS command snmp-server community community-string RW. section 6.4

Cisco IOS configuration

R1(config)# snmp-server community password456 RW This configures password456 as an RW community string, allowing authenticated SNMP Get and Set messages.

How Acing the CCNA Exam: Volume 2 Advanced Networking and Security covers it

How deep it goes
Defines permissions, ACL support, and Cisco IOS syntax, but does not develop broader SNMP configuration.
Examples
Uses Cisco IOS commands and contrasts NMS Get and Set requests authenticated with RO versus RW strings.
What it assumes
Assumes familiarity with SNMP managers, agents, community strings, and basic SNMP request types.
What you can do after
Operate/configure a Cisco IOS device with an RW community string and distinguish permitted SNMP operations.
How it connects
Connects SNMPv1, SNMPv2c, community strings, Get, GetNext, GetBulk, Set, NMS, and access control lists.

Related concepts

This explainer was generated by Manning's knowledge graph from the text of Acing the CCNA Exam: Volume 2 Advanced Networking and Security. The section links point to the parts of the book it draws on.