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# debug isis

#### Syntax

debug isis isisLog [ severity { severityValue | severityNumber } ]
[ verbosity verbosityLevel ]

no debug isis isisLog

#### Release Information

Command introduced before JUNOSe Release 7.1.0.

#### Description

Displays debug-related information about selected IS-IS log parameters. This command manipulates the same log as the Global Configuration log commands. The no version disables debugging display.

#### Options

- isisLog—IS-IS log of interest; one of the following options:
  - adj-packets—IS-IS adjacency-related packets, such as hello packets sent and IS-IS received adjacencies going up and down
  - mpls traffic-eng advertisements—MPLS traffic-engineering agent advertisements
  - mpls traffic-eng agents—MPLS traffic-engineering agents
  - snp-packets—IS-IS CSNPs/PSNPs
  - spf-events—Shortest path first events
  - spf-statistics—SPF timing and statistic data
  - spf-triggers—SPF triggering events
  - update-packets—Update-related packets
- severity—Specifies the minimum severity of the log messages displayed for the selected category; described either by a descriptive term—severityValue—or by a corresponding number—severityNumber—in the range 0–7; the lower the number, the higher the priority:
  - emergency or 0—System unusable
  - alert or 1—Immediate action needed
  - critical or 2—Critical condition exists
  - error or 3—Error condition
  - warning or 4—Warning condition
  - notice or 5—Normal but significant condition
  - info or 6—Informational message
  - debug or 7—Debug message
- verbosityLevel—Verbosity of the log category's messages; can be any of the following:
  - low—Terse
  - medium—Moderate detail
  - high—Verbose

#### Mode

Privileged Exec

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