Help us improve your experience.

Let us know what you think.

Do you have time for a two-minute survey?

TechLibrary
Navigation

show isis backup spf results

Syntax

show isis backup spf results<instance instance-name><level (1 | 2)><logical-system (all | logical-system-name)><no-coverage><topology (ipv4-unicast | ipv6-multicast | ipv6-unicast | unicast)>

Syntax (EX Series Switches)

show isis backup spf results<instance instance-name><level (1 | 2)><no-coverage><topology (ipv4-unicast | unicast)>

Release Information

Command introduced in Junos OS Release 9.5.

Description

Display information about IS-IS shortest-path-first (SPF) calculations for backup paths.

Options

none
—

Display information about IS-IS SPF calculations for all backup paths for all destination nodes.

instance instance-name
—

(Optional) Display SPF calculations for backup paths for the specified routing instance.

level (1 | 2)
—

(Optional) Display SPF calculations for the backup paths for the specified IS-IS level.

logical-system logical-system-name
—

(Optional) Display SPF calculations for the backup paths for all logical systems or on a particular logical system.

no-coverage
—

(Optional) Display SPF calculations only for destinations that do not have backup coverage.

topology (ipv4-multicast | ipv6-multicast | ipv6-unicast | unicast)
—

(Optional) Display SPF calculations for backup paths for the specified topology only.

Required Privilege Level

view

 

Related Documentation

 

List of Sample Output

show isis backup spf results
show isis backup spf results no-coverage

Output Fields

Table 1 lists the output fields for the show isis backup spf results command. Output fields are listed in the approximate order in which they appear.

Table 1: show isis backup spf results Output Fields

Field Name

Field Description

node-name

Name of the destination node.

Address

Address of the destination node.

Primary next-hop

Interface and name of the node of the primary next hop to reach the destination.

Root

Name of the next-hop neighbor.

Metric

Metric to the node.

Eligible

Indicates that the next-hop neighbor has been designated as a backup path to the destination node.

Backup next-hop

Name of the interface of the backup next hop.

SNPA

Subnetwork point of attachment (MAC address of the next hop).

LSP

Name of the MPLS label-switched path (LSP) designated as a backup path.

Not eligible

Indicates that the next-hop neighbor cannot function as a backup path to the destination.

Reason

Describes why the next-hop neighbor is designated as Not eligible as a backup path.

Sample Output

show isis backup spf results

user@host> show isis backup spf results
IS-IS level 1 SPF results:
  0 nodes

 IS-IS level 2 SPF results:
banff.00
  Primary next-hop: so-6/0/0.0, IPV4, olympic
  Primary next-hop: ae0.0, IPV4, camaro, SNPA:  0:90:69:f:67:f0
  Primary next-hop: so-6/0/0.0, IPV6, olympic
  Primary next-hop: ae0.0, IPV6, camaro, SNPA:  0:90:69:f:67:f0
    Root: camaro, Root Metric: 10, Metric: 10
      Not eligible, Reason: Primary next-hop multipath 
    Root: olympic, Root Metric: 10, Metric: 10
      Not eligible, Reason: Primary next-hop multipath 
    Root: glacier, Root Metric: 10, Metric: 25
      Not eligible, Reason: Primary next-hop multipath 
crater.00
  Primary next-hop: so-6/0/0.0, IPV4, olympic
  Primary next-hop: so-6/0/0.0, IPV6, olympic
    Root: olympic, Root Metric: 10, Metric: 10
      Not eligible, Reason: Primary next-hop link fate sharing 
    Root: glacier, Root Metric: 10, Metric: 15
      Eligible, Backup next-hop: as0.0, IPV4, glacier
      Eligible, Backup next-hop: as0.0, IPV6, glacier
    Root: camaro, Root Metric: 10, Metric: 20
      Not eligible, Reason: Interface is already covered 
olympic.00
  Primary next-hop: so-6/0/0.0, IPV4, olympic
  Primary next-hop: so-6/0/0.0, IPV6, olympic
    Root: olympic, Root Metric: 10, Metric: 0
      Not eligible, Reason: Primary next-hop link fate sharing 
    Root: camaro, Root Metric: 10, Metric: 20
      track-item: olympic.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
    Root: glacier, Root Metric: 10, Metric: 20
      track-item: olympic.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
camaro.00
  Primary next-hop: ae0.0, IPV4, camaro, SNPA:  0:90:69:f:67:f0
  Primary next-hop: ae0.0, IPV6, camaro, SNPA:  0:90:69:f:67:f0
    Root: camaro, Root Metric: 10, Metric: 0
      Not eligible, Reason: Primary next-hop link fate sharing 
    Root: glacier, Root Metric: 10, Metric: 20
      track-item: camaro.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
    Root: olympic, Root Metric: 10, Metric: 20
      track-item: camaro.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
glacier.00
  Primary next-hop: as0.0, IPV4, glacier
  Primary next-hop: as0.0, IPV6, glacier
    Root: glacier, Root Metric: 10, Metric: 0
      Not eligible, Reason: Primary next-hop link fate sharing 
    Root: camaro, Root Metric: 10, Metric: 20
      track-item: glacier.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
    Root: olympic, Root Metric: 10, Metric: 20
      track-item: glacier.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
  5 nodes

show isis backup spf results no-coverage

user@host> show isis backup spf results no-coverage
IS-IS level 1 SPF results:
  0 nodes

 IS-IS level 2 SPF results:
olympic.00
  Primary next-hop: so-6/0/0.0, IPV4, olympic
  Primary next-hop: so-6/0/0.0, IPV6, olympic
    Root: olympic, Root Metric: 10, Metric: 0
      Not eligible, Reason: Primary next-hop link fate sharing 
    Root: camaro, Root Metric: 10, Metric: 20
      track-item: olympic.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
    Root: glacier, Root Metric: 10, Metric: 20
      track-item: olympic.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
camaro.00
  Primary next-hop: ae0.0, IPV4, camaro, SNPA:  0:90:69:f:67:f0
  Primary next-hop: ae0.0, IPV6, camaro, SNPA:  0:90:69:f:67:f0
    Root: camaro, Root Metric: 10, Metric: 0
      Not eligible, Reason: Primary next-hop link fate sharing 
    Root: glacier, Root Metric: 10, Metric: 20
      track-item: camaro.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
    Root: olympic, Root Metric: 10, Metric: 20
      track-item: camaro.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
glacier.00
  Primary next-hop: as0.0, IPV4, glacier
  Primary next-hop: as0.0, IPV6, glacier
    Root: glacier, Root Metric: 10, Metric: 0
      Not eligible, Reason: Primary next-hop link fate sharing 
    Root: camaro, Root Metric: 10, Metric: 20
      track-item: glacier.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
    Root: olympic, Root Metric: 10, Metric: 20
      track-item: glacier.00-00
      track-item: kobuk.00-00
      Not eligible, Reason: Path loops 
  3 nodes

Published: 2013-04-03

Previous Page Next Page