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A MIB (Management Information Base) is a structured document that defines the data a device exposes over SNMP — things like interface counters, system uptime, or CPU load. Each module declares a set of named objects, organized into a tree.

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SNMP (Simple Network Management Protocol) is how network devices — routers, switches, servers — report status and statistics to monitoring tools. It's the protocol; MIBs are the vocabulary it uses to describe what's being asked for.

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An OID (Object Identifier) is the numeric address of one piece of data in a MIB — a dotted sequence like 1.3.6.1.2.1.1.1, read from the root of a global tree down to one specific object. Names are easier to read; OIDs are what's actually sent over the wire.

Try it: sysDescr (1.3.6.1.2.1.1.1) →

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JUNIPER-JS-DNS-MIB

9 objects

This MIB provides collated statistics for the Domain Name System (DNS) proxy collected over all interfaces on which it is configured to serve

Imported Objects

JUNIPER-JS-SMI	jnxJsDnsRoot
SNMPv2-SMI	Counter64 MODULE-IDENTITY OBJECT-TYPE

OID	Name	Access	Status	Description
1.3.6.1.4.1.2636.3.39.1.10.1	IdentityjnxJsDns			This MIB provides collated statistics for the Domain Name System (DNS) proxy collected over all interfaces on which it is configured to serve
1.3.6.1.4.1.2636.3.39.1.10.1.1	NodejnxJsDnsProxyDataObjects
1.3.6.1.4.1.2636.3.39.1.10.1.1.1	ScalarjnxJsDNSProxyQueriesReceived	read-only	current	Count of total number of DNS queries received by the DNS Proxy.
1.3.6.1.4.1.2636.3.39.1.10.1.1.2	ScalarjnxJsDnsProxyResponsesSent	read-only	current	Count of DNS queries answered sent by the DNS Proxy. This includes DNS cache hits and misses that were answered.
1.3.6.1.4.1.2636.3.39.1.10.1.1.3	ScalarjnxJsDnsProxyQueriesForwarded	read-only	current	Count of DNS queries forwarded to other DNS server. This is number of queries that have been proxied due to cache miss.
1.3.6.1.4.1.2636.3.39.1.10.1.1.4	ScalarjnxJsDnsProxyNegativeResponses	read-only	current	Count of Negative DNS query responses. This is the count of DNS queries that the Proxy could not obtain answers for.
1.3.6.1.4.1.2636.3.39.1.10.1.1.5	ScalarjnxJsDnsProxyRetryRequests	read-only	current	Count of DNS retry queries that this proxy received.
1.3.6.1.4.1.2636.3.39.1.10.1.1.6	ScalarjnxJsDnsProxyPendingRequests	read-only	current	Count of DNS requests yet to be answered.
1.3.6.1.4.1.2636.3.39.1.10.1.1.7	ScalarjnxJsDnsProxyServerFailures	read-only	current	Count of DNS Proxy Failures.