show isis overview
Syntax
show isis overview<instance instance-name><logical-system (all | logical-system-name)>
Syntax (EX Series Switches and QFX Series)
show isis overview
<instance instance-name>
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
Output 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.
Field Name |
Field Description |
|---|---|
Hostname |
Name of the router. |
Sysid |
Part of the ISO address of the routing device. |
Areaid |
The area number of the routing device. |
Instance |
IS-IS routing instance. |
Router ID |
Router ID of the routing device. |
Adjacency holddown |
Adjacency holddown capability: |
Maximum Areas |
Maximum number of IS-IS areas advertised by the routing device. |
LSP life time |
Lifetime of the link-state PDU, in seconds. |
Filter low life time LSPs up to |
LSPs with a lifetime lower than this value are filtered out. |
Attached bit evaluation |
Attached bit capability: |
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: |
Allow internal prefix overloading |
Allow internal prefixes to be advertised with high metric: |
Allow external prefix overloading |
Allow external prefixes to be advertised with high metric: |
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: |
Restart |
Graceful restart capability: |
Restart duration |
Time period for complete reacquisition of IS-IS neighbors. |
Helper mode |
Graceful restart helper capability: |
Level |
IS-IS level:
|
IPv4 is enabled |
IP Protocol version 4 capability is enabled. |
IPv6 is enabled |
IP Protocol version 6 capability is enabled. |
Micro-loop avoidance |
Micro-loop avoidance is enabled. Generally adjacent nodes converge faster than neighboring nodes causing traffic to loop. A route convergence delay is configured to avoid such micro loops. |
Internal route preference |
Preference value of internal routes. |
External route preference |
Preference value of external routes. |
Prefix export limit |
Number of prefixes allowed to be exported, as configured
by the |
Prefix export count |
Number of prefixes exported. |
Wide area metrics are enabled |
Wide area metrics capability is enabled. |
Narrow metrics are enabled |
Narrow metrics capability is enabled. |
Adjacency holddown is active |
IS-IS adjacencies come up one after another when adjacency holddown is enabled. |
SRv6 |
Indicates the SRv6 capability of the device. |
Locator |
END-SID is attached to this locator address. |
END-SID |
Function for the prefix segments. |
Flavor |
Behavior of the END-SID function. This field can have the following values:
|
Sample Output
show isis overview
user@host> show isis overview
Instance: master
Router ID: 10.255.107.183
Hostname: pro-bng3-a
Sysid: 0192.0168.0001
Areaid: 49.0002
Adjacency holddown: enabled
Maximum Areas: 3
LSP life time: 1200
Filter low life time LSPs up to: 300
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
Allow route leaking: disabled
Allow internal prefix overloading: enabled
Allow external prefix overloading: enabled
Overload timeout: 60 sec
IPv4 is enabled, IPv6 is enabled
Micro-loop avoidance: Enabled
Method: Route Convergence Delay, Route convergence delay: 5000 msec
Traffic engineering: enabled
Restart: Disabled
Helper mode: Enabled
Level 1
Internal route preference: 15
External route preference: 160
Wide metrics are enabled, Narrow metrics are enabled
Adjacency holddown is active
Level 2
Internal route preference: 18
External route preference: 165
Prefix export limit: 5, Prefix export count: 5
Wide metrics are enabled
Adjacency holddown is active command-name
user@host> show isis overview (Segment Routing)
Source Packet Routing (SPRING): Enabled
SRGB Config Range :
SRGB Start-Label : 40000, SRGB Index-Range : 4000
SRGB Block Allocation: Success
SRGB Start Index : 40000, SRGB Size : 4000, Label-Range: [ 40000, 43999 ]
Node Segments: Enabled
Ipv4 Index : 11, Ipv6 Index : 12
SRv6: Enabled
Locator: 7000::/64, Algorithm: 128
END-SID: 7000::1, Flavor: PSP, USP, USD
END-SID: 7000::2, Flavor: None
END-SID: 7000::3, Flavor: PSP
Post Convergence Backup: Disabled
Level 1
Internal route preference: 15
External route preference: 160
command-name
user@host> show isis overview logical-system R2
Instance: master
Router ID: 192.168.0.2
Hostname: pro-bng3-a-R2
Sysid: 0192.0168.0002
Areaid: 49.0002
Adjacency holddown: enabled
Maximum Areas: 3
LSP life time: 1200
Attached bit evaluation: enabled
SPF delay: 200 msec, SPF holddown: 5000 msec, SPF rapid runs: 3
IPv4 is enabled, IPv6 is enabled
Traffic engineering: enabled
Restart: Disabled
Helper mode: Enabled
Level 1
Internal route preference: 15
External route preference: 160
Prefix export count: 0
Wide metrics are enabled, Narrow metrics are enabled
Level 2
Internal route preference: 18
External route preference: 165
Prefix export count: 0
Wide metrics are enabled, Narrow metrics are enabled
user@host> show isis overview logical-system R3
Instance: master
Router ID: 192.168.0.3
Hostname: pro-bng3-a-R3
Sysid: 0192.0168.0003
Areaid: 49.0002
Adjacency holddown: enabled
Maximum Areas: 3
LSP life time: 1200
Attached bit evaluation: enabled
SPF delay: 200 msec, SPF holddown: 5000 msec, SPF rapid runs: 3
IPv4 is enabled, IPv6 is enabled
Traffic engineering: enabled
Restart: Disabled
Helper mode: Enabled
Level 1
Internal route preference: 15
External route preference: 160
Prefix export count: 0
Wide metrics are enabled, Narrow metrics are enabled
Level 2
Internal route preference: 18
External route preference: 165
Prefix export count: 0
Wide metrics are enabled, Narrow metrics are enabledRelease Information
Command introduced in Junos OS Release 8.5.