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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:
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
      Not eligible, IPV4, Reason: Primary next-hop link fate sharing 
      Not eligible, IPV6, Reason: Primary next-hop link fate sharing 
    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
      Not eligible, IPV4, Reason: Path loops 
      Not eligible, IPV6, Reason: Path loops 
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
      Not eligible, IPV4, Reason: Primary next-hop link fate sharing 
      Not eligible, IPV6, Reason: Primary next-hop link fate sharing 
    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
      Not eligible, IPV4, Reason: Path loops 
      Not eligible, IPV6, Reason: Path loops 
  2 nodes                               

IS-IS level 2 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
      Not eligible, IPV4, Reason: Primary next-hop link fate sharing 
      Not eligible, IPV6, Reason: Primary next-hop link fate sharing 
    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
      Not eligible, IPV4, Reason: Path loops 
      Not eligible, IPV6, Reason: Path loops 
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
      Not eligible, IPV4, Reason: Primary next-hop link fate sharing 
      Not eligible, IPV6, Reason: Primary next-hop link fate sharing 
    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
      Not eligible, IPV4, Reason: Path loops 
      Not eligible, IPV6, Reason: Path loops 
  2 nodes

show isis backup spf results no-coverage

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:
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

Published: 2014-04-23

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