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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

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