Monitoring OSPF

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JUNOSe 9.1.x IP, IPv6, and IGP Configuration Guide > Configuring OSPF > Monitoring OSPF
Monitoring OSPF

Two sets of commands enable you to monitor OSPF operation on your router: the debug and the show commands. Both sets of commands provide information about your router's OSPF state and configuration.

The task you are performing with each of these monitoring commands is basically the same for each command; that is, you are requesting information. The results of this request can vary. For instance, the debug commands provide information (some of which is dynamically obtained from router logs) about problems with the network or the router, whereas the show commands provide information about the actual state and configuration of your router.

debug Commands

The debug commands provide information about the following OSPF items:

Adjacencies

Designated router

General events

Link-state advertisements

Neighbors

Packets received

Packets sent

Route events

SPF events

debug ip ospf

debug ipv6 ospf
Use to display information about selected OSPF events. This command has many keywords so you can specify a variety of OSPF events.

You can set the level of severity for the events you want displayed: 0–7.

You can set the verbosity of the messages you want displayed: low, medium, high.

Example 1
host1#debug ip ospf adj
Example 2
host1#debug ipv6 ospf lsa
Use the no version to cancel the display of any information about the designated variable.
ospf log-adjacency-changes
Use to enable the logging of changes in the state of an OSPF neighbor.

Example
host1(config-router)#ospf log-adjacency-changes
Use the no version to disable the logging of changes in the state of an OSPF neighbor.
undebug ip ospf

undebug ipv6 ospf
Use to cancel the display of information about a selected event.

The same OSPF variables can be designated as in the debug ip ospf or debug ipv6 ospf commands.

Example 1
host1#undebug ip ospf adj
Example 2
host1#undebug ipv6 ospf lsa
There is no no version.
show Commands

The show commands provide information about the following OSPFv2 and OSPFv3 items:

Routing processes

Border routers

Database

Interfaces

Neighbors

Traffic

Virtual links

Internal statistics

MPLS tunnels and opaque LSAs

You can use the output filtering feature of the show command to include or exclude lines of output based on a text string you specify. See JUNOSe System Basics Configuration Guide, Chapter 2, Command-Line Interface, for details.

show ip ospf

show ipv6 ospf

Use to display general information about OSPF routing processes.

Field descriptions

Routing Process—Process ID, router ID, domain ID

OSPF administrative state—Enabled or disabled

OSPF operational state—Enabled or disabled

Incremental External SPF—On or off

Graceful Restart Capability—On or off

Time limit to complete graceful restart—Amount of time (in seconds) during which the router can reacquire OSPF neighbors that were fully operational prior to the restart

Time limit to flush grace LSAs—Amount of time (in seconds) during which the router can remove grace LSAs over all interfaces

Graceful Restart Helper Capability—On or off

Graceful Restart Help:

Not Aborted On Topology Change

Aborted On Any Topology Change

Aborted On Any Non-External Topology Change

OSPF set trap field—Enabled or disabled

Router—Router types: internal, area border, or autonomous system boundary routers

OSPF Statistics—Packets received and sent; LSA discard count

TOS type—Number of types of service supported

SPF timers—Timers configured on the router

Maximum path splits—Maximum equal-cost paths supported

Areas—Areas configured and their parameters

Number of areas—Number of areas in the router
Example 1
host1#show ip ospf
Routing Process OSPF 1 with Router ID, 0.0.0.0, Domain ID 0.0.0.0

OSPF administrative state is enabled

OSPF operational state is disabled

Incremental External SPF is ON

Graceful Restart Capability is ON 

Time limit to complete graceful restart 180 seconds 

Time limit to flush grace LSAs 15 seconds 

Graceful Restart Helper Capability is OFF 

Graceful Restart Help Not Aborted On Topology Change 

Ospf set trap field disabled

OSPF Statistics: 

Rcvd: 0 total, 0 checksum errors

0 hello, 0 database desc, 0 link state req

0 link state updates, 0 link state acks

Sent: 0 total, 0 pkts dropped

0 hello, 0 database desc, 0 link state req

0 link state updates, 0 link state acks

LSA discard count: 0

Supports only single TOS(TOS0) routes 

SPF schedule delay 0 secs, Hold time between two SPFs 3 secs

Maximum path splits 4 

Number of active areas in this router is 0

0 normal, 0 stub, 0 NSSA.
Example 2
host1#show ip ospf
Routing Process OSPF 4 with Router ID, 10.0.0.1, Domain ID 0.0.0
 OSPF administrative state is enabled
 OSPF operational state is enabled
 Incremental External SPF is ON
 Graceful Restart Capability is OFF
 Graceful Restart Helper Capability is OFF
 Graceful Restart Help Not Aborted On Topology Change
 Ospf set trap field disabled
 OSPF Statistics:
      Rcvd: 0 total, 0 pkts dropped, 0 checksum errors
            0 hello, 0 database desc, 0 link state req
            0 link state updates, 0 link state acks
      Sent: 1 total, 0 pkts dropped
            1 hello, 0 database desc, 0 link state req
            0 link state updates, 0 link state acks
      LSA discard count: 0
 Supports only single TOS(TOS0) routes
 SPF schedule delay 0 secs, Hold time between two SPFs 3 secs
 Maximum path splits 4
 Area BACKBONE(0.0.0.0)
    SPF algorithm executed 5 times
    ABDR count 0
    ASBDR count 0
    LSA Count 1
    Number of interfaces in this area is 1
    Area ranges are:
 Area 0.0.0.1
    Area is a stub area
    Type-3 summary is filtered
    SPF algorithm executed 5 times
    ABDR count 0
    ASBDR count 0
    LSA Count 0
    Number of interfaces in this area is 0
    Area ranges are:
 Area 0.0.0.2
    Area is nssa
    Type-3 summary is filtered
    SPF algorithm executed 4 times
    ABDR count 0
    ASBDR count 0
    LSA Count 0
    Number of interfaces in this area is 0
    Area ranges are:
 Area 0.0.0.5
    Area is nssa
    SPF algorithm executed 3 times
    ABDR count 0
    ASBDR count 0
    LSA Count 0
    Number of interfaces in this area is 0
    Area ranges are:
 Number of active areas in this router is 4
 1  normal, 1 stub, 2 NSSA.
Example 3
host1#show ipv6 ospf
Routing Process OSPFv3 1 with Router ID 10.1.1.1
 OSPFv3 administrative state is enabled
 OSPFv3 operational state is enabled
 Incremental External SPF is OFF
 Graceful Restart capability is OFF
 Graceful Restart helper capability is OFF
Ospf set trap field disabled 
 SPF schedule delay 0 secs, Hold time between two SPFs 3 secs
 Maximum path splits 4
 Area BACKBONE(0.0.0.0)
SPF algorithm executed 13 times
ABDR count 1
ASBDR count 1
LSA Count 117
Number of interfaces in this area is 3
Area ranges are:
 Number of active areas in this router is 1
1    normal, 0 stub, 0 NSSA.
show ip ospf border-routers

show ipv6 ospf border-routers

Use to display a list of OSPF border routers.

Field descriptions

Destination—Destination's router ID

NEXT HOP—Next hop toward the destination

Interface—Interface for which you are obtaining the information

Router Type—Router type of the destination: either an ABR or AS boundary router, or both

Route Type—Type of this route: either an intra-area or interarea route

Area—Area ID of the area from which this route is learned
Example 1
host1#show ip ospf border-routers
Destination NEXT HOP   Interface      Router Type  Route Type Area
5.5.0.250   5.5.6.250  fastethernet0  ABR/ASBR     INTRA      0.0.0.0
5.5.0 250   4.4.4.250  fastethernet0  ABR/ASBR     INTRA      0.0.0.1
6.6.6.250   4.4.4.13   fastethernet0  ABR          INTRA      0.0.0.1
Example 2
host1#show ipv6 ospf border-routers
OSPF Area Border Routers
    Destination       NEXT_HOP       Interface  RouteType       Area
      10.0.0.10       FE80::3       ATM4/1.39   INTRA        0.0.0.0
      10.0.0.11       FE80::4       ATM4/0.41   INTRA        0.0.0.0
      10.0.0.11         FE80::5      ATM4/1.48   INTRA      100.0.0.1
OSPF Autonomous System Border Routers
    Destination       NEXT_HOP       Interface  RouteType       Area
       10.1.1.4        FE80::3       ATM4/1.39   INTER        0.0.0.0
       10.1.1.5        FE80::4       ATM4/0.41   INTER        0.0.0.0
show ip ospf database

show ipv6 ospf database

Use to display the full IP OSPF database, a summary of the database, or LSAs specific to the given area.

Field descriptions

Link ID—Link-state ID of the LSA; for OSPFv2:

For router links, set to the router's OSPF router ID

For network links, set to the IP interface address of the network's designated router

For type 3 summary LSAs, set to an IP network number

For type 4 summary LSAs, set to an AS boundary router ID

For type 5 externals, set to an IP network number

Link ID—Link-state ID of the LSA; for OSPFv3:

For link LSAs, set to the interface ID

For network links, set to the interface ID

For router links, set to integer

For intra-area prefix links, set to integer

For interarea prefix links, set to integer

For interarea router links, set to integer

For external links, set to integer

For grace links, set to integer

ADV Router—ID of the advertising router

Age—Link-state age

Seq#—Link-state sequence number (detects old or duplicate LSAs)

Checksum—Fletcher checksum of the complete contents of the LSA

Area—Area for which data is displayed

Router—Number of router LSAs

Network—Number of network LSAs

Intra-Prefix—Number of intra-prefix LSAs

Inter-Prefix—Number of inter-prefix LSAs

Inter-Router—Number of inter-outer LSAs

Link LSAs—Number of link LSAs

Grace LSAs—Number of graceful restart LSAs

External LSAs—Number of external LSAs

MaxAge—Number of LSAs that have reached the maximum age

Area—Area for this LSA

LS age—LSA age

Options—Optional capabilities supported by this router

LS Type—LSA type

Link State ID—Link-state ID of the link local LSA

Length—Length of the LSA (in bytes)

Bit set—Bit set used by this LSA type

Link connected to—Type of network to which the link connects

Neighboring router's Router ID—Router ID of the neighboring router

Neighboring router's Interface ID—Interface ID of the neighboring router

Local Interface ID—Local interface ID

Metric—Cost of this interface

Attached Router—Addresses of any attached routers

Router Priority—Priority value configured for the router

Link Local Address—Originating router's link-local interface address on the link

Prefixes—Prefixes associated with this LSA

Number of Prefixes—Number of prefixes associated with this LSA

Referenced LSA Type—Router LSA or network LSA with which the IPv6 address prefixes should be associated

Referenced LSA Advertising Router—Router LSA or network LSA with which the IPv6 address prefixes should be associated

Referenced LSA ID—Router LSA or network LSA with which the IPv6 address prefixes should be associated

asbr—Address of the AS boundary router

LS Seq Number—Sequence number of the LSA

TLVs—Type of TLV included in LSA

1(Restart duration)—Duration of the restart, in seconds

2(Restart Reason)—Reason that the peer restarted: Unknown, Software Restart, Software Reload, Software Upgrade, Switch to redundant control processor

3(Unknown)—Any recognized type is listed as type 3, unknown; consequently the meaning and units of the value are unknown as well

length—Length of the TLV; varies according to the TLV

Value—Value of the TLV; varies according to TLV
Example 1—OSPFv2 output
host1#show ip ospf database
OSPF Database
  Router Link States (Area 0.0.0.0)
  Link ID    ADV Router   Age  Seq#        Checksum
5.1.101.1    5.1.101.1    932  0x80000069  0x102f
192.168.1.13 192.168.1.13 1763 0x80000099  0xaa4e
192.168.1.10 192.168.1.10 285  0x80000087  0xada6
192.168.1.11 192.168.1.11 401  0x80000087  0xaba5
192.168.24.6 192.168.24.6 622  0x800005bf  0x6087
Network Link States (Area 0.0.0.0)
  Link ID    ADV Router    Age Seq#       Checksum
56.56.56.220 5.6.6.1       499 0x80000069 0x26a0
192.168.1.12 192.168.254.6 622 0x8000009e 0xebc2
  Summary Link States (Area 0.0.0.0)
  Link ID ADV Router   Age Seq#       Checksum
4.4.4.0   5.5.0.250    497 0x8000005a 0x2ca6
4.4.4.0   192.168.1.13 528 0x80000059 0x 45d
  AS Summary Link States (Area 0.0.0.0)
  Link ID ADV Router   Age Seq#       Checksum
5.5.0.250 192.168.1.13 491 0x80000002 0xe9d4
  AS External Link States 
Link ID ADV Router Age Seq#       Checksum
8.8.8.0 5.5.0.250  502 0x8000005f 0x2d67
  Router Link States (Area 0.0.0.1)
Link ID      ADV Router   Age Seq#       Checksum
5.5.0.250    5.5.0.250    498 0x80000067 0xdec1
192.168.1.13 192.168.1.13 505 0x800000a5 0x3b32
Network Link States (Area 0.0.0.1)
Link ID     ADV Router     Age Seq#        Checksum
4.4.4.13    192.168.1.13   505 0x80000001  0x410b
5.1.0.0     192.168.1.13   940 0x80000059  0x82c4
5.2.0.0     5.5.0.250      495 0x80000001  0x51bf
5.2.0.0     192.168.1.13   932 0x80000059  0x76cf
5.3.0.0     5.5.0.250      495 0x80000001  0x45ca
5.3.0.0     192.168.1.13   932 0x80000059  0x6ada
56.56.56.0  5.5.0.250      495 0x80000062  0xc469
AS Summary Link States (Area 0.0.0.1)
Link ID   ADV Router Age Seq#         Checksum
5.5.0.250 5.5.0.250  496 0x800000001  0x51c0
Example 2—OSPFv3 general output
host1#show ipv6 ospf database
OSPF Database 
     V3 Router Link States (Area 0.0.0.0)
Link ID         ADV Router      Age         Seq#        Checksum
0.0.0.0         2.2.2.2         167         0x80000003  0xa9e3
0.0.0.0         3.3.3.3         168         0x80000002  0x2c63
      V3 Inter-Area Net Link States (Area 0.0.0.0)
Link ID         ADV Router      Age         Seq#        Checksum
0.0.0.1         2.2.2.2         33          0x80000004  0x5288
      V3 Inter-Area Router Link States (Area 0.0.0.0)
Link ID         ADV Router      Age         Seq#        Checksum
0.0.0.1         2.2.2.2         33          0x80000001  0x a0f
      V3 Intra-Area Prefix Link States (Area 0.0.0.0)
Link ID         ADV Router      Age         Seq#        Checksum
0.0.0.1         2.2.2.2         167         0x80000003  0xc8ba
0.0.0.1         3.3.3.3         168         0x80000003  0xdc9e
      V3 Link Link States (Area 0.0.0.0)
Link ID         ADV Router      Age         Seq#        Checksum
50.0.0.10       2.2.2.2         178         0x80000001  0xb51d
50.0.0.13       3.3.3.3         178         0x80000001  0x8c3e
     V3 Router Link States (Area 0.0.0.1)
Link ID         ADV Router      Age         Seq#        Checksum
0.0.0.0         1.1.1.1         40          0x80000003  0xf7a4
0.0.0.0         2.2.2.2         168         0x80000003  0x7825
      V3 Inter-Area Net Link States (Area 0.0.0.1)
Link ID         ADV Router      Age         Seq#        Checksum
0.0.0.2         2.2.2.2         33          0x80000004  0x6a4f
      V3 Intra-Area Prefix Link States (Area 0.0.0.1)
Link ID         ADV Router      Age         Seq#        Checksum
0.0.0.1         1.1.1.1         169         0x80000003  0x911a
0.0.0.1         2.2.2.2         168         0x80000003  0xa5fd
      V3 Link Link States (Area 0.0.0.1)
      
Link ID         ADV Router      Age         Seq#        Checksum
50.0.0.6        1.1.1.1         180         0x80000001  0x44b7
50.0.0.9        2.2.2.2         178         0x80000001  0x1bd8
      V3 External Link States  
Link ID         ADV Router      Age         Seq#        Checksum
0.0.0.1         1.1.1.1         40          0x80000001  0xe5a0
Example 3—OSPFv3 database summary information
host1:v2#show ipv6 ospf database database-summary
 Area     Router   Network   Intra-Prefix   Inter-Prefix   Inter-Router
-------   ------   -------   ------------   ------------   ------------
0.0.0.0   2        1         3              0              0
 Area     MaxAge
-------   ------
0.0.0.0   0
Link LSAs: 2, Max age: 0
Grace LSAs: 1, Max age: 0
External LSAs: 0, Max age: 0
Example 4—OSPFv3 LSA output (router)
host1#show ipv6 ospf database router
V3 Router Link States (Area 0.0.0.0)
  LS age: 433
  Options: (  V6-Bit , R-Bit , ExternalRoutingCapability,  No Nssa-LSA)
  LS Type: Router Links
  Link State ID: 0.0.0.0
  Advertising Router: 1.1.1.1
  LS Seq Number: 0x80000002
  Checksum: 0x c90
  Length: 40
  Bit E set
     Link connected to: a Point To Point Network
      Neighboring  router's Router Id: 2.2.2.2
      Neighboring  router's Interface Id: 0x3200000a
      Local Interface ID : 0x32000006
      Metric 1
  LS age: 432
  Options: (  V6-Bit , R-Bit , ExternalRoutingCapability,  No Nssa-LSA)
  LS Type: Router Links
  Link State ID: 0.0.0.0
  Advertising Router: 2.2.2.2
  LS Seq Number: 0x80000002
  Checksum: 0x8519
  Length: 40
     Link connected to: a Point To Point Network
      Neighboring  router's Router Id: 1.1.1.1
      Neighboring  router's Interface Id: 0x32000006
      Local Interface ID : 0x3200000a
      Metric 1
Example 5—OSPFv3 LSA output (network)
host1#show ipv6 ospf database network
        (Area 0.0.0.1)
    LS Type: Network LSA
    Link State ID: 0.0.0.14
      Advertising Router: 3.3.3.3
      LS age: 131
    LS Seq Number: 0x80000001
      Checksum: 0x6c69
      Length: 32
Options:   V6-bit set, ExternalRoutingCapability, R-bit set
      Attached Router: 3.3.3.3
      Attached Router: 2.2.2.2   
Example 6—OSPFv3 LSA output (link)
host1#show ipv6 ospf database link
V3 Link Link States (Area 0.0.0.0)
Link ID         ADV Router      Age         Seq#        Checksum
  LS age: 280
  LS Type: Link 
  Link State ID: 0x32000006
  Advertising Router: 1.1.1.1
  LS Seq Number: 0x80000001
  Checksum: 0x44b7
  Length: 56
  Router Priority 0
  Link Local Address fe80::90:1a00:200:670
  Prefixes 
       1:1:1:1000:: / 60       options 0       metric 0
  LS age: 282
  LS Type: Link 
  Link State ID: 0x3200000a
  Advertising Router: 2.2.2.2
  LS Seq Number: 0x80000001
  Checksum: 0x11e1
  Length: 56
  Router Priority 0
  Link Local Address fe80::90:1a00:300:670
  Prefixes 
       1:1:1:1000:: / 60       options 0       metric 0
Example 7—OSPFv3 LSA output (intra-area-prefix)
host1#show ipv6 ospf database intra-area-prefix
      V3 Intra Area Prefix Link States (Area 0.0.0.0)
  LS age: 162
  LS Type: Intra Area Prefix Links
  Link State ID: 0.0.0.1
  Advertising Router: 1.1.1.1
  LS Seq Number: 0x80000003
  Checksum: 0x911a
  Length: 44
  Number of Prefixes 1
  Referenced LSA Type 0x    2001
  Referenced LSA Advertising Router 1.1.1.1
  Referenced LSA ID 0
  Prefixes 
       1:1:1:1000:: / 60       options 0       metric 1
  LS age: 161
  LS Type: Intra Area Prefix Links
  Link State ID: 0.0.0.1
  Advertising Router: 2.2.2.2
  LS Seq Number: 0x80000003
  Checksum: 0xa5fd
  Length: 44
  Number of Prefixes 1
  Referenced LSA Type 0x    2001
  Referenced LSA Advertising Router 2.2.2.2
  Referenced LSA ID 0
  Prefixes 
       1:1:1:1000:: / 60       options 0       metric 1
Example 8—OSPFv3 LSA output (interarea router)
host1#show ipv6 ospf database inter-area-router
      V3 Inter-Area-Router Link States (Area 0.0.0.0)
  LS age: 304
  LS Type: Inter Area Net Links
  Link State ID: 0.0.0.1
  Advertising Router: 2.2.2.2
  LS Seq Number: 0x80000001
  Checksum: 0x a0f
  Length: 32
     Metric: 1
     Options: 19
     asbr: 1.1.1.1
Example 9—OSPFv3 LSA output (graceful restart helper)
host1#show ipv6 ospf database grace
      V3 Grace Link States (Area 0.0.0.1)
LS age: 3
  LS Type: Grace
  Link State ID: 0x00000002
  Advertising Router: 2.2.2.2
  LS Seq Number: 0x80000001
  Checksum: 0x8409
  Length: 44
 TLVs
Type: 1(Restart duration), length: 4, Value: 150
Type: 2(Restart Reason), length: 1, Value: 2(Software Reload)
Type: 3(Unknown), length: 4, Value: 33686018
show ip ospf database link-local

Use to display OSPF database link local states.

Field descriptions

Interface—Interface for which you are obtaining link-local LSA

LS age—Age of LSA

LS Type—Type of LSA (Link Local)

Link State ID—Link-state ID of the link local LSA

Advertising Router—Router ID of the router that originated the LSA

LS Seq Number—Link-state sequence number to identify duplicate or old LSIDs

Checksum—Checksum of the complete contents of the LSA

Length—Length of the LSA in bytes

Opaque LSA Type—Type of opaque LSA

Neighbor—Neighbor IP address

Grace Period—Helper grace period in seconds

Restart Reason—Reason for restart; Planned Restart or Unplanned Restart
Example
host1#show ip ospf database link-local
Link-Local States
 Interface : ATM1/3.80
  LS age: 17
  LS Type: Link Local
  Link State ID: 3.0.0.0
  Advertising Router: 100.1.1.67
  LS Seq Number: 0x80000002
  Checksum: 0xac91
  Length: 36
  Opaque LSA Type : Restart Grace
  Neighbor 0.0.0.0
  Grace Period 90 seconds
  Restart Reason : Unplanned Restart
show ip ospf database opaque-area

Use to display lists of information about the TE opaque LSAs.

The TE router address LSA describes a stable IP address on the originating router that can be used for TE purposes—such as setting up TE LSPs to this address.

The TE link LSA describes TE information about an interface on the originating router.

Field descriptions

LS age—Age of LSA

Options—Optional capabilities supported by the described portion of the routing domain

LS Type—Type of LSA; opaque area TE router address or opaque area TE link LSA

Link State ID—Link-state ID of the opaque LSA

Advertising Router—Router ID of the router that originated the LSA

LS Seq Number—Link-state sequence number to identify duplicate or old LSIDs

Checksum—Checksum of the complete contents of the LSA

Length—Length of the LSA in bytes

TE Router-ID—Traffic engineering router ID of the originating router

Link Type—Point-to-point or multiaccess

Link ID—For point-to-point interfaces, this is the router ID of the router at the remote end; for multiaccess interfaces, this is the address of the DR

Local Address—IP address of the local interface for the link

Remote Address—IP address of the remote (neighbor's) interface for the link

TE Metric—Link metric for traffic engineering purposes; can be different from the standard OSPF link

Max BW—Maximum bandwidth that can be used on this link in this direction

Max Reservable BW—Maximum bandwidth that can be reserved on this link; can exceed the maximum bandwidth in the event of oversubscription

Max Unreserved BW—Amount of bandwidth not yet reserved at each of the eight priority levels; each value is less than or equal to the maximum reservable bandwidth

Color—Bitmask that specifies the administrative group membership for this link; a link that is a member of more than one group will have multiple bits set
Example
host1#show ip ospf database opaque-area
      Opaque-area Link States (Area 0.0.0.0)
  LS age: 914
  Options:   (TOS-capable, No Type7-LSA, ExternalRoutingCapability, No
  Multicast Capability, No External Attributes    LSA)
  LS Type: Opaque-Area (TE Router Address)
  Link State ID: 1.0.0.0(Instance)
  Advertising Router: 100.1.1.1
  LS Seq Number: 0x80000003
  Checksum: 0xd293
  Length: 28
  TE Router-ID: 100.1.1.1 
  LS age: 919
  Options:   (TOS-capable, No Type7-LSA, ExternalRoutingCapability, No
  Multicast Capability, No External Attributes    LSA)
  LS Type: Opaque-Area (TE Links)
  Link State ID: 1.0.0.1(Instance)
  Advertising Router: 100.1.1.1
  LS Seq Number: 0x80000003
  Checksum: 0xf66e
  Length: 124
  Link Type: P2P
  Link ID: 1744896257
 Local Address 14.1.1.2
 Remote Address 14.1.1.1
 TE Metric 0
 Max BW 1000 kb/sec (125000 Bps)
 Max Reservable BW 1000 kb/sec (125000 Bps)
 Max Unreserved BW : pri 0 1000 kb/sec (125000 Bps)
 Max Unreserved BW : pri 1 1000 kb/sec (125000 Bps)
 Max Unreserved BW : pri 2 1000 kb/sec (125000 Bps)
 Max Unreserved BW : pri 3 1000 kb/sec (125000 Bps)
 Max Unreserved BW : pri 4 1000 kb/sec (125000 Bps)
 Max Unreserved BW : pri 5 1000 kb/sec (125000 Bps)
 Max Unreserved BW : pri 6 1000 kb/sec (125000 Bps)
 Max Unreserved BW : pri 7 1000 kb/sec (125000 Bps)
 Color 0 
show ip ospf interface

show ipv6 ospf interface

Use to display a list of OSPFv2 or OSPFv3 interfaces.

Use the optional areaId or areaIdInt values to specify an OSPF area ID in either IP or decimal format.

Field descriptions

Interface value (fastEthernet)—Status of the physical link and the operational status of the protocol

Internet Address—Interface IP address

Area—Area identifier: IP address

Network type—Broadcast, NBMA, Point-to-Point, or Point-to-Multipoint

Authentication type—None, simple, or MD5

Cost—Metric for OSPF transmission

Transmit Delay—Time between transmissions from the specified interface

Interface State—Current state of the specified interface

Priority—Router's priority on the specified interface

Designated Router—Designated router ID and respective interface IP address

Backup Designated Router—Designated router ID and respective interface IP address of the backup router

Timer intervals—Configuration of timer intervals: Hello, Dead, Wait, and Retransmit

Neighbor Count—Number of neighbors and their state; adjacent neighbors

LDP is configured through LDP autoconfig—Indicates whether LDP is configured on the interface by means of autoconfiguration; supported only for OSPFv2

LDP-IGP Synchronization—Status of synchronization, Achieved or Pending; supported only for OSPFv2
Example 1
host1#show ip ospf interface
FastEthernet0 is up, OSPF line protocol is up
OSPF interface configuration:
  Internet Address 192.168.1.250, Area 0.0.0.0
  Network type BROADCAST, No authentication
  Cost: 1
  Transmit Delay is 1 sec, Interface State DROTHER, Priority 1
  Designated Router (Interface address) 192.168.1.107
  Backup Designated Router (Interface address) 192.168.1.214
  Timer intervals configured, Hello 10, Dead 40, Wait 120, Retransmit 5
  Neighbor Count is 2, Adjacent neighbor count is 2
  Adjacent with neighbor 192.168.1.107 (Designated Router)
  Adjacent with neighbor 192.168.254.7 (Backup Designated Router)
  LDP is configured through LDP autoconfig
  LDP-IGP Synchronization: Achieved
Example 2
host1#show ipv6 ospf interface
ATM4/0.12 is up, OSPFv3 line protocol is up
 Area 0.0.0.0, Intf ID: 0x320004, Instance ID: 0
 Link Local Address: fe80::90:1a00:100:80
 Interface is active
 Network type POINT-TO-POINT
 Interface State POINT-TO-POINT
 Cost: 1, Priority 1
 No designated router on this network
 No backup designated router on this network
 Timer intervals configured:
 Hello 10, Dead 40, Wait 40
 Transmit Delay is 1 sec(s)
 Retransmit interval is 5 secs
 Neighbor Count is 1
  FULL Adjacent neighbor count is 1
  Adjacent with neighbor 11.0.0.2 
FastEthernet0/0 is up, OSPFv3 line protocol is up
OSPF interface configuration:
 Interface ID 0.0.1.1
 IPv6 link-local address FE80::3/128
 IPv6 prefix address 3000::1/64, Area 0.0.0.0
 Network type BROADCAST
 Cost: 1
 Transmit Delay is 1 sec, Interface State BACKUPDR, Priority 1
 Designated Router's router ID 1.1.1.1
 Backup Designated Router's router ID 2.2.2.2
 Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
 Neighbor Count is 1, Adjacent neighbor count is 1
  Adjacent with neighbor 3.3.3.3 (Designated Router) 
show ip ospf internal-statistics

show ipv6 ospf internal-statistics

Use to display internal OSPFv2 or OSPFv3 statistics, such as allocation failures for different OSPF components.

Use the delta keyword to display statistics relative to the current baseline.

Field descriptions

LSA bytes allocated—Number of bytes allocated for LSAs

Router LSA bytes allocated—Number of bytes allocated for router LSAs

Summary bytes allocated—Number of bytes allocated for summary LSAs

Neighbor RTX bytes allocated—Number of bytes allocated for neighbor retransmissions

Timers bytes allocated—Number of bytes allocated for OSPF timers

Ospf total bytes free—Total number of bytes free

Ospf heap total bytes allocated—Total number of bytes allocated from the OSPF heap

Neighbor allocation failures—Number of neighbor allocation failures

LSA allocation failures—Number of LSA allocation failures

LSA HDR allocation failures—Number of LSA header allocation failures

DB Request allocation failures—Number of database request allocation failures

RTX allocation failures—Number of neighbor retransmission allocation failures

LS Ack allocation failures—Number of LSA acknowledgment packet allocation failures

DD pkt allocation failures—Number of database description packet allocation failures

OSPF interface allocation failures—Number of interface allocation failures

OSPF general packet allocation failures—Number of general packet allocation failures
Example 1
host1#show ip ospf internal-statistics
 Routing Process OSPF 1 with Router ID 5.72.3.1
 Internal OSPF Statistics, bytes allocated/free:
      LSA bytes allocated:    216
      Router LSA bytes allocated:    936
      Summary bytes allocated:    0
      Neighbor RTX bytes allocated:    0
      Timers bytes allocated:    352
      Ospf total bytes free:    824368
      Ospf heap total bytes allocated:    1048576
 Internal OSPF Statistics, allocation failures:
      Neighbor allocation failures:    0
      LSA allocation failures:    0
      LSA HDR allocation failures:    0
      DB Request allocation failures:    0
      RTX allocation failures:    0
      LS Ack allocation failures:    0
      DD pkt allocation failures:    0
      OSPF interface allocation failures:    0
      OSPF general packet allocation failures:    0
Example 2
host1#show ipv6 ospf internal-statistics
Routing Process OSPFv3 1 with Router ID 1.1.1.1
 Internal OSPF Statistics, bytes allocated/free:
      LSA bytes allocated:                     39
      Router LSA bytes allocated:              1314774
      Summary bytes allocated:                 0
      Timers bytes allocated:                  96
      Ospf total bytes free:                   16
      Ospf heap total bytes allocated:         1000
 Internal OSPF Statistics, allocation failures:
      Neighbor allocation failures:            0
      LSA allocation failures:                 0
      LSA HDR allocation failures:             0
      DB Request allocation failures:          0
      RTX allocation failures:                 0
      LS Ack allocation failures:              0
      DD pkt allocation failures:              0
      OSPF interface allocation failures:      0
      OSPF general packet allocation failures: 0 
show ip ospf neighbors

show ipv6 ospf neighbors

Use to display information about OSPF neighbors on a per-interface basis.

Use the optional areaId or areaIdInt values, in the show ipv6 ospf neighbors command, to specify an OSPFv3 area ID in either IP or decimal format.

You can use the history keyword with the show ip ospf neighbors command to display a history of up to 10 events for all OSPF neighbors or a specific OSPF neighbor. This neighbor uptime tracking feature is not available for OSPFv3. For more information, see Neighbor Uptime Tracking.

Field descriptions

Neighbor ID—Neighbor's router ID

Pri—Router priority of neighbor

State—OSPF neighbor's state

DR—Designated router

BDR—Backup designated router

DR Other—Neighbor to a designated router or a backup designated router

Dead Time—Interval since last hello packet from neighbor

Address—IP address of the neighbor's interface

Intf ID—Interface ID of the neighbor's interface

Interface—Name of the specified interface and its port number

Transition log—List of transitions events for a neighbor

Interface—Interface for the neighbor

Event—Transition event

Cause—Cause of transition event

Time—Time stamp for the event in day month date HH:MM:SS format

Example 1
    host1#show ip ospf neighbors
        Neighbor ID  Pri  State             Dead Time     Address    Interface
    10.0.8.1     1    TWO-WAY/DR Other  00:00:39      10.0.76.1  fastEthernet11/0
    10.0.71.1    1    FULL/DR           00:00:42      10.0.76.2  fastEthernet11/0
    10.0.96.1    1    FULL/BDR          00:00:28      10.0.76.4  fastEthernet11/0
Example 2
    host1#show ipv6 ospf neighbors
        Neighbor ID  Pri  State            Dead Time Intf ID     Interface
    1.1.1.1      1    TWO-WAY/DROTHER  00:00:40  0x3200042a  FastEthernet13/1.172
    3.3.3.3      1    FULL/BDR         00:00:40  0x32000494  FastEthernet13/1.172
    4.4.4.4      1    FULL/DR          00:00:40  0x320004c9  FastEthernet13/1.172
Example 3
host1#show ip ospf neighbors history
Transition log for neighbor 10.10.8.2:
Interface           Event Cause           Time
==============================================
ATM2/0.8            Seen  NA              WED DEC 14 07:02:27
Transition log for neighbor 10.10.12.2:
Interface           Event Cause           Time
==============================================
ATM2/0.12           Seen  NA              WED DEC 14 07:09:12
ATM2/0.12           DOWN  Interface down  WED DEC 14 07:05:47
ATM2/0.12           Seen  NA              WED DEC 14 07:02:32
show ip ospf remote-neighbor interface

Use to display all interfaces that are associated with OSPF remote neighbors.

Field descriptions

OSPF remote-neighbor—Remote neighbor address for this interface

Update-source—Update source for this interface

Remote-neighbor reachable—Reachable status of the remote neighbor, yes or no

Area—Area of this interface

Network type—Network type for this interface

Cost—Cost value for this interface

Transmit Delay—Transmit delay for this interface, in seconds

Interface State—Interface state

Priority—Priority value for this interface

Designated router—Designated router on this network, if any

Backup designated router—Backup designated router on this network, if any

Hello—Hello timer value, in seconds

Dead—Dead interval timer value, in seconds

Wait—Wait interval timer value, in seconds

Retransmit—Retransmit interval timer value, in seconds

Neighbor Count—Number of neighbors to this interface

Adjacent neighbor count—Number of adjacent neighbors to this interface

Adjacent with neighbor—Address of the neighbor adjacent to this interface
Example
host1#show ip ospf remote-neighbor interface
OSPF remote-neighbor 221.221.221.221 interface configuration:
 Update-source loopback0
 Remote-neighbor reachable: yes
 Area 0.0.0.0
 Network type POINT-TO-POINT, No authentication
 Cost: 1
 Transmit Delay is 1 sec, Interface State POINT-TO-POINT, Priority 1
 No designated router on this network
 No backup designated router on this network
 Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
 Neighbor Count is 1, Adjacent neighbor count is 1
  Adjacent with neighbor 221.221.221.221 
show ip ospf spf-log

Use to display how often and why the router has run a full SPF calculation.

Field descriptions

Intra SPF log—Log for SPF calculations run to compute intra-area LSAs

Inter SPF log—Log for SPF calculations run to compute interarea LSAs

External SPF log—Log for SPF calculations run to compute routes outside the OSPF routing domain

When—Amount of time since a full SPF calculation took place, in hours:minutes:seconds; the previous 20 calculations are logged

Duration—Number of milliseconds to complete this SPF run; the elapsed time is in actual clock time, not CPU time

LSA Router Id—Whenever a full SPF calculation is triggered by a new LSA, the router ID is stored in the router

Triggers—List of reasons that triggered a full SPF calculation
Example
host1#show ip ospf spf-log
Intra SPF log
When     Duration      LSA Router Id    Triggers
00:04:42 0.000         23.23.23.3       Protocol Off
00:04:38 0.000         23.23.23.3       LSA Add
00:04:34 0.000         12.12.12.2       LSA Add
00:04:30 0.010         23.23.23.3       LSA Update
00:03:51 0.000         23.23.23.3       Protocol Off
00:03:47 0.000         23.23.23.3       LSA Add
00:03:43 0.000         12.12.12.2       LSA Add
00:03:39 0.000         23.23.23.3       LSA Update
Inter SPF log                                          
When     Duration      LSA Router Id    Triggers
00:04:46 0.010         23.23.23.3       Protocol Off
00:04:42 0.000         23.23.23.3       LSA Add
00:04:38 0.000         12.12.12.2       LSA Add
00:04:34 0.000         23.23.23.3       LSA Update
00:03:55 0.000         23.23.23.3       Protocol Off
00:03:51 0.000         23.23.23.3       LSA Add
00:03:47 0.000         12.12.12.2       LSA Add
00:03:43 0.000         23.23.23.3       LSA Update                  
External SPF log
When     Duration      LSA Router Id    Triggers
00:04:47 0.000         23.23.23.3       Protocol Off
00:04:43 0.000         23.23.23.3       LSA Add
00:04:39 0.000         12.12.12.2       LSA Add
00:04:35 0.010         23.23.23.3       LSA Update
00:03:56 0.000         23.23.23.3       Protocol Off
00:03:52 0.000         23.23.23.3       LSA Add
00:03:48 0.000         12.12.12.2       LSA Add
00:03:44 0.000         23.23.23.3       LSA Update
show ipv6 ospf summary-prefix
Use to display summary prefixes configured to summarize externals.

Example
host1#show ipv6 ospf summary-prefix
Summary Prefixes
4:: / 64
5:: / 64 
show ipv6 ospf traffic

Use to display OSPFv3 packet statistics.

Use the delta keyword to display statistics relative to the current baseline.

Field descriptions

Rcvd

total—Total number of packets received

checksum errors—Total number of packets received that contained checksum errors

hello—Total number of hello packets received

database desc—Total number of database description packets received

link state req—Total number of link-state request packets received

link state updates—Total number of link-state update packets received

link state acks—Total number of link-state acknowledge packets received

Sent

total—Total number of sent packets

pkts dropped—Total number of packets dropped

hello—Total number of hello packets sent

database desc—Total number of database description packets sent

link state req—Total number of link-state request packets sent

link state updates—Total number of link-state update packets sent

link state acks—Total number of link-state acknowledge packets sent

LSA discard count—Total number of packets discarded
Example
host1#show ipv6 ospf traffic
OSPFv3 Statistics:
      Rcvd: 249 total, 0 checksum errors
            242 hello, 2 database desc, 1 link state req
            4 link state updates, 1 link state acks
      Sent: 251 total, 0 pkts dropped
            242 hello, 3 database desc, 1 link state req
            4 link state updates, 1 link state acks
      LSA discard count: 0
show ip ospf virtual-links

Use to display the parameters and the current state of OSPF virtual links.

Field descriptions

Virtual link to router—OSPF neighbor and the current state of the virtual link

Transmit Delay—Time (in seconds) between transmissions from the specified interface

Timer intervals—Timer intervals (in seconds) configured for the link: Hello, Dead, and Retransmit
Example
host1#show ip ospf virtual-links
Virtual link to router 192.168.1.13 in state POINT-TO-POINT
Transmit Delay is 1 sec
Timer intervals configured, Hello 10 sec, Dead 40 sec, Retransmit 5 sec 

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