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Home Documentation Junos OS Junos CLI Reference CLI Reference S

Junos CLI Reference

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Junos CLI Reference
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show isis backup spf results

date_range 19-Nov-23
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Syntax

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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)

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

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

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

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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

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user@host> show isis backup spf results no-coverage
IS-IS level 1 SPF results:
pro-bng3-k.00
  Primary next-hop: fe-1/3/3.0, IPV4, pro-bng3-k, SNPA:  b0:c6:9a:2c:f0:de
  Primary next-hop: fe-1/3/3.0, IPV6, pro-bng3-k, SNPA:  b0:c6:9a:2c:f0:de
    Root: pro-bng3-k, Root Metric: 10, Metric: 0, Root Preference: 0x0
    Root: pro-bng3-i, Root Metric: 10, Metric: 20, Root Preference: 0x0
      track-item: pro-bng3-k.00-00
      track-item: pro-bng3-j.00-00
pro-bng3-i.00
  Primary next-hop: fe-0/1/2.0, IPV4, pro-bng3-i, SNPA:  b0:c6:9a:2a:f4:21
  Primary next-hop: fe-0/1/2.0, IPV6, pro-bng3-i, SNPA:  b0:c6:9a:2a:f4:21
    Root: pro-bng3-i, Root Metric: 10, Metric: 0, Root Preference: 0x0
    Root: pro-bng3-k, Root Metric: 10, Metric: 20, Root Preference: 0x0
      track-item: pro-bng3-j.00-00
      track-item: pro-bng3-i.00-00
   2 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

Release Information

Command introduced in Junos OS Release 9.5.

Related Documentation

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