display ospf spf-tree

Use display ospf spf-tree to display SPF tree information.

Syntax

display ospf [ process-id ] [ area area-id ] spf-tree [ verbose ]

Views

Any view

Predefined user roles

network-admin

network-operator

Parameters

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

area area-id: Specifies an OSPF area by its ID. The area ID is an IP address or a decimal integer in the range of 0 to 4294967295 that is translated into the IP address format. If you do not specify an area, this command displays SPF tree information for all OSPF areas.

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

Examples

# Display brief SPF tree information for Area 0 in OSPF process 1.

<Sysname> display ospf 1 area 0 spf-tree

          OSPF Process 1 with Router ID 100.0.0.4

        Flags: S-Node is on SPF tree       R-Node is directly reachable
               I-Node or Link is init      D-Node or Link is to be deleted
               P-Neighbor is parent        A-Node is in candidate list
               C-Neighbor is child         T-Node is tunnel destination
               H-Nexthop changed           N-Link is a new path
               V-Link is involved          G-Link is in change list

                Topology base (MTID 0)

                  Area: 0.0.0.0  Shortest Path Tree

 SpfNode         Type    Flag      SpfLink         Type   Cost  Flag
>192.168.119.130 Network S R
                                -->114.114.114.111 NET2RT 0     C
                                -->100.0.0.4       NET2RT 0     P
>114.114.114.111 Router  S
                                -->192.168.119.130 RT2NET 65535 P
>100.0.0.4       Router  S
                                -->192.168.119.130 RT2NET 10    C

Table 50: Command output

Field	Description
Topology	This field is not supported in the current software version. Topology name. The topology name for base topology is base.
MTID	This field is not supported in the current software version. Topology ID. The value of 0 indicates the base topology.
SpfNode	SPF node, represented by a router ID when the node type is Router, or the IP address of the DR when the node type is Network. Node flag: I—The node is in initialization state. A—The node is on the candidate list. S—The node is on the SPF tree. R—The node is directly connected to the root node. D—The node is to be deleted. T—The node is the tunnel destination.
SpfLink	SPF link, representing the peer node. Link type: RT2RT—Router to router. NET2RT—Network to router. RT2NET—Router to network. Link flag: I—The link is in initialization state. P—The peer is the parent node. C—The peer is the child node. D—The link is to be deleted. H—The next hop is changed. V—When the peer node is deleted or added, the peer node is not on the SPF tree or is deleted. N—The link is newly added, and both end nodes are on the SPF tree. G—The link is on the area change list.

# Display detailed SPF tree information for Area 0 in OSPF process 1.

<Sysname> display ospf 1 area 0 spf-tree verbose

          OSPF Process 1 with Router ID 100.0.0.4

        Flags: S-Node is on SPF tree       R-Node is directly reachable
               I-Node or Link is init      D-Node or Link is to be deleted
               P-Neighbor is parent        A-Node is in candidate list
               C-Neighbor is child         T-Node is tunnel destination
               H-Nexthop changed           N-Link is a new path
               V-Link is involved          G-Link is in change list

                Topology base (MTID 0)

                  Area: 0.0.0.0  Shortest Path Tree

>LsId(192.168.119.130)
 AdvId    : 100.0.0.4       NodeType     : Network
 Mask     : 255.255.255.0   SPFLinkCnt   : 2
 Distance : 10
 VlinkData: 0.0.0.0         ParentLinkCnt: 1           NodeFlag: S R
 NextHop  : 1
   192.168.119.130    Interface: Vlan100
 BkNextHop: 1
   0.0.0.0            Interface: Vlan100
 -->LinkId(114.114.114.111)
    AdvId   : 100.0.0.4       LinkType   : NET2RT
    LsId    : 192.168.119.130 LinkCost   : 0           NextHopCnt: 1
    LinkData: 0.0.0.0         LinkNewCost: 0           LinkFlag  : C
 -->LinkId(100.0.0.4)
    AdvId   : 100.0.0.4       LinkType   : NET2RT
    LsId    : 192.168.119.130 LinkCost   : 0           NextHopCnt: 1
    LinkData: 0.0.0.0         LinkNewCost: 0           LinkFlag  : P

Table 51: Command output

Field	Description
Topology	This field is not supported in the current software version. Topology name. The topology name for base topology is base.
MTID	This field is not supported in the current software version. Topology ID. The value of 0 indicates the base topology.
LsId	Link state ID.
AdvId	ID of the advertising router.
NodeType	Node type: Network—Network node. Router—Router node.
Mask	Network mask. Its value is 0 for a router node.
SPFLinkCnt	Number of SPF links.
Distance	Cost to the root node.
VlinkData	Destination address of virtual link packets.
ParentLinkCnt	Number of parent links.
NodeFlag	Node flag: I—The node is in initialization state. A—The node is on the candidate list. S—The node is on the SPF tree. R—The node is directly connected to the root node. D—The node is to be deleted. T—The node is the tunnel destination.
NextHop	Next hop.
Interface	Output interface.
BkNextHop	Backup next hop.
LinkId	Link ID.
LinkType	Link type: RT2RT—Router to router. NET2RT—Network to router. RT2NET—Router to network.
LinkCost	Link cost.
NextHopCnt	Number of next hops.
LinkData	Link data.
LinkNewCost	New link cost.
LinkFlag	Link flag: I—The link is in initialization state. P—The peer is the parent node. C—The peer is the child node. D—The link is to be deleted. H—The next hop is changed. V—When the peer node is deleted or added, the peer node is not on the SPF tree or is deleted. N—The link is newly added, and both end nodes are on the SPF tree. G—The link is on the area change list.

prev	up	next
display ospf routing	home	display ospf statistics