Supported Platforms
show isis overview
Syntax
Syntax (EX Series Switches and QFX Series)
Release Information
Command introduced in Junos OS Release 8.5.
Command introduced in Junos OS Release 9.0 for EX Series switches.
Command introduced in Junos OS Release 12.1 for the QFX Series.
Description
Display IS-IS overview information.
Options
none | — | Display standard overview information about IS-IS for all routing instances. |
instance instance-name | — | (Optional) Display overview information for the specified routing instance. |
logical-system (all | logical-system-name) | — | (Optional) Perform this operation on all logical systems or on a particular logical system. |
Required Privilege Level
view
List of Sample Output
show isis overviewOutput Fields
Table 1 lists the output fields for the show isis overview command. Output fields are listed in the approximate order in which they appear.
Table 1: show isis overview Output Fields
Field Name | Field Description |
|---|---|
Instance | IS-IS routing intance. |
Router ID | Router ID of the routing device. |
Adjacency holddown | Adjacency holddown capability: enabled or disabled. |
Maximum Areas | Maximum number of IS-IS areas advertised by the routing device. |
LSP life time | Lifetime of the link-state PDU, in seconds. |
Attached bit evaluation | Attached bit capability: enabled or disabled. |
SPF delay | Delay before performing consecutive shortest-path-first (SPF) calculations. |
SPF holddown | Delay before performing additional SPF calculations after the maximum number of consecutive SPF calculations is reached. |
SPF rapid runs | Maximum number of SPF calculations that can be performed in succession before the holddown timer begins. |
Overload bit at startup is set | Overload bit capability is enabled. |
Overload high metrics | Overload high metrics capability: enabled or disabled. |
Overload timeout | Time period after which overload is reset and the time that remains before the timer is set to expire. |
Traffic engineering | Traffic engineering capability: enabled or disabled. |
Restart | Graceful restart capability: enabled or disabled. |
Restart duration | Time period for complete reacquisition of IS-IS neighbors. |
Helper mode | Graceful restart helper capability: enabled or disabled. |
Level | IS-IS level:
|
IPv4 is enabled | IP Protocol version 4 capability is enabled. |
IPv6 is enabled | IP Protocol version 6 capability is enabled. |
CLNS is enabled | (J Series routers only) OSI CLNP capability is enabled. |
Internal route preference | Preference value of internal routes. |
External route preference | Preference value of external routes. |
Wide area metrics are enabled | Wide area metrics capability is enabled. |
Narrow metrics are enabled | Narrow metrics capability is enabled. |
Sample Output
show isis overview
user@host> show isis overviewInstance: master
Router ID: 192.168.1.220
Adjacency holddown: enabled
Maximum Areas: 3
LSP life time: 65535
Attached bit evaluation: enabled
SPF delay: 200 msec, SPF holddown: 5000 msec, SPF rapid runs: 3
Overload bit at startup is set
Overload high metrics: disabled
Overload timeout: 300 sec, expires in 295 seconds
IPv4 is enabled, IPv6 is enabled
Traffic engineering: enabled
Restart: Enabled
Restart duration: 210 sec
Helper mode: Enabled
Level 1
Internal route preference: 15
External route preference: 160
Wide metrics are enabled, Narrow metrics are enabled
Level 2
Internal route preference: 18
External route preference: 165
Wide metrics are enabled
