display isis spf-tree ipv6

Use display isis spf-tree ipv6 to display IPv6 IS-IS SPF tree information.

Syntax

display isis spf-tree ipv6 [ [ level-1 | level-2 ] | verbose ] * [ process-id ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

level-1: Displays Level-1 IPv6 IS-IS SPF tree information. If you do not specify this keyword, the command displays both Level-1 and Level-2 SPF tree information.

level-2: Displays Level-2 IPv6 IS-IS SPF tree information. If you do not specify this keyword, the command displays both Level-1 and Level-2 SPF tree information.

verbose: Displays detailed IPv6 IS-IS SPF tree information. If you do not specify this keyword, the command displays brief IPv6 IS-IS SPF tree information.

process-id: Specifies an IS-IS process by its ID in the range of 1 to 65535. If you do not specify this argument, the command displays IPv6 SPF tree information about all IS-IS processes.

Examples

# Display brief IPv6 IS-IS SPF tree information.

<Sysname> display isis spf-tree ipv6

                        Shortest Path Tree for IS-IS(1)
                        -------------------------------

      Flags: S-Node is on SPF tree       T-Node is on tent list
             O-Node is overload          R-Node is directly reachable
             I-Node or Link is isolated  D-Node or Link is to be deleted
             C-Neighbor is child         P-Neighbor is parent
             V-Link is involved          N-Link is a new path
             L-Link is on change list    U-Protocol usage is changed
             H-Nexthop is changed

                       Level-1 Shortest Path Tree
                       ----------------------------------

SpfNode            NodeFlag       SpfLink            LinkCost LinkFlag
-------------------------------------------------------------------------------
0000.0000.0032.00  S/-/-/-/-/-
                               -->0000.0000.0032.01  10       -/-/C/-/-/-/-/-/-
                               -->0000.0000.0064.00  10       -/-/C/-/-/-/-/-/-
0000.0000.0032.01  S/-/-/R/-/-
                               -->0000.0000.0064.00  0        -/-/C/-/-/-/-/-/-
                               -->0000.0000.0032.00  0        -/-/-/P/-/-/-/-/-
0000.0000.0064.00  S/-/-/R/-/-
                               -->0000.0000.0032.00  10       -/-/-/P/-/-/-/-/-
                               -->0000.0000.0032.01  10       -/-/-/P/-/-/-/-/-

                       Level-2 Shortest Path Tree
                       ----------------------------------

SpfNode            NodeFlag       SpfLink            LinkCost LinkFlag
-------------------------------------------------------------------------------
0000.0000.0032.00  S/-/-/-/-/-
                               -->0000.0000.0032.01  10       -/-/C/-/-/-/-/-/-
                               -->0000.0000.0064.00  10       -/-/C/-/-/-/-/-/-
0000.0000.0032.01  S/-/-/R/-/-
                               -->0000.0000.0064.00  0        -/-/C/-/-/-/-/-/-
                               -->0000.0000.0032.00  0        -/-/-/P/-/-/-/-/-
0000.0000.0064.00  S/-/-/R/-/-
                               -->0000.0000.0032.00  10       -/-/-/P/-/-/-/-/-
                               -->0000.0000.0032.01  10       -/-/-/P/-/-/-/-/-

# Display detailed Level-1 IPv6 IS-IS SPF tree information.

<Sysname> display isis spf-tree ipv6 level-1 verbose
                        Shortest Path Tree for IS-IS(1)
                        -------------------------------

      Flags: S-Node is on SPF tree       T-Node is on tent list
             O-Node is overload          R-Node is directly reachable
             I-Node or Link is isolated  D-Node or Link is to be deleted
             C-Neighbor is child         P-Neighbor is parent
             V-Link is involved          N-Link is a new path
             L-Link is on change list    U-Protocol usage is changed
             H-Nexthop is changed

                           Level-1 Shortest Path Tree
                           --------------------------

 SpfNode        : 0000.0000.0032.00
 Distance       : 0
 TE distance    : 0
 NodeFlag       : S/-/-/-/-/-
 RelayNibID     : 0x0
 TE tunnel count: 0
 Nexthop count  : 0
 SpfLink count  : 2
 -->0000.0000.0032.01
    LinkCost    : 10
    LinkNewCost : 10
    LinkFlag    : -/-/C/-/-/-/-/-/-
    LinkSrcCnt  : 1
        Type    : Adjacent   Interface: N/A
        Cost    : 10         Nexthop  : N/A
-->0000.0000.0064.00
    LinkCost    : 10
    LinkNewCost : 10
    LinkFlag    : -/-/C/-/-/-/-/-/-
    LinkSrcCnt  : 1
        Type    : Adjacent   Interface: Tun1
        Cost    : 10         Nexthop  : FE80::A0A:A40

SpfNode        : 0000.0000.0032.01
 Distance       : 10
 TE distance    : 10
 NodeFlag       : S/-/-/R/-/-
 RelayNibID     : 0x0
 TE tunnel count: 0
 Nexthop count  : 0
 SpfLink count  : 2
 -->0000.0000.0064.00
    LinkCost    : 0
    LinkNewCost : 0
    LinkFlag    : -/-/C/-/-/-/-/-/-
    LinkSrcCnt  : 1
        Type    : Adjacent   Interface: Vlan2
        Cost    : 10         Nexthop  : FE80::200:12FF:FE34:1
-->0000.0000.0032.00
    LinkCost    : 0
    LinkNewCost : 0
    LinkFlag    : -/-/-/P/-/-/-/-/-
    LinkSrcCnt  : 1
        Type    : Adjacent   Interface: N/A
        Cost    : 0           Nexthop  : N/A

SpfNode        : 0000.0000.0064.00
 Distance       : 10
 TE distance    : 10
 NodeFlag       : S/-/-/R/-/-
 RelayNibID     : 0x0
 TE tunnel count: 0
 Nexthop count  : 2
     Neighbor  : 0000.0000.0064.00        Interface  : Vlan2
     NextHop   : FE80::200:12FF:FE34:1
     BkNeighbor: N/A                      BkInterface: N/A
     BkNextHop : N/A
     Neighbor  : 0000.0000.0064.00        Interface  : Tun1
     NextHop   : FE80::A0A:A40
     BkNeighbor: N/A                      BkInterface: N/A
     BkNextHop : N/A
 SpfLink count  : 2
 -->0000.0000.0032.00
    LinkCost    : 10
    LinkNewCost : 10
    LinkFlag    : -/-/-/P/-/-/-/-/-
    LinkSrcCnt  : 1
        Type    : Remote     Interface: N/A
        Cost    : 10         Nexthop  : N/A
        AdvMtID : 0
-->0000.0000.0064.00
    LinkCost    : 10
    LinkNewCost : 10
    LinkFlag    : -/-/C/-/-/-/-/-/-
    LinkSrcCnt  : 1
        Type    : Remote     Interface: Tun1
        Cost    : 10         Nexthop  : FE80::A0A:A40
        AdvMtID : 0

Table 171: Command output

Field	Description
SpfNode	ID of the topology node.
Distance	Shortest distance from the root node to the current node.
TE distance	Shortest distance from the root node to the current node (including tunnel links). If no tunnels are configured, TE distance equals Distance.
NodeFlag	Node flag: S—The node is on the SPF tree. T—The node is on the tent list. O—The node is overloaded. R—The node is directly connected. I—The node is isolated. D—The node is to be deleted.
TE tunnel count	Number of tunnels destined for this node.
Nexthop count	Number of next hops.
NextHop	Primary next hop of the node or the link advertising source.
AdvMtID	Topology from which the routing information is learned: 0—Base topology. 6-4094—Other topologies.
Interface	Primary output interface of the node or the link advertising source.
BkNextHop	Backup next hop.
BkInterface	Backup output interface.
Neighbor	ID of the primary next hop neighbor.
BkNeighbor	ID of the backup next hop neighbor.
SpfLink	Topology link.
SpfLink count	Number of topology links.
LinkCost	Link cost.
LinkNewCost	New link cost.
LinkFlag	Link flag: I—The link is isolated. D—The link is to be deleted. C—The neighbor is a child node. P—The neighbor is the parent node. V—The link is involved. N—The link is a new path. L—The link is on the change list. U—The protocol of the link is changed. H—The next hop of the link is changed.
LinkSrcCnt	Number of link advertising sources.
Type	Type of the link advertising source: Adjacent—The link advertising source is a local neighbor. Remote—The link advertising source is advertised by a remote node in an LSP.
Cost	Cost of the link advertising source.

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