OcNOS-RON : Layer 3 Guide : Open Shortest Path First Command Reference : OSPFv2 Commands : show ip ospf
show ip ospf
Use this command to display general information about all OSPF routing processes.
Command Syntax
show ip ospf (<0-65535>|)
Parameters
<0-65535>
The ID of the router process for which information will be displayed. If this parameter is specified, only the information for the specified routing process is displayed.
Command Mode
Privileged Exec mode
Applicability
This command was introduced before OcNOS version 1.3.
Examples
#show ip ospf 1
Routing Process "ospf 1" with ID 4.1.1.1
Process uptime is 1 minute
Process bound to VRF default
Conforms to RFC2328, and RFC1583 Compatibility flag is disabled
Supports only single TOS(TOS0) routes
Supports opaque LSA
Supports Graceful Restart
This router is an ASBR (injecting external routing information)
SPF schedule delay min 0 secs 500 msecs
SPF schedule delay max 50 secs 0 msecs
Refresh timer 10 secs
Number of incomming current DD exchange neighbors 0/5
Number of outgoing current DD exchange neighbors 0/5
Initial LSA throttle delay 10 secs 0 msecs
Minimum hold time for LSA throttle 20 secs 0 msecs
Maximum wait time for LSA throttle 45 secs 0 msecs
Minimum LSA arrival 1 secs 0 msecs
Number of external LSA 5. Checksum 0x010632
Number of opaque AS LSA 0. Checksum 0x000000
Number of non-default external LSA 5
External LSA database is unlimited.
Number of LSA originated 6
Number of LSA received 0
Number of areas attached to this router: 1
Area 0 (BACKBONE)
Number of interfaces in this area is 1(1)
Number of fully adjacent neighbors in this area is 0
Area has no authentication
SPF algorithm last executed 00:00:47.558 ago
SPF algorithm executed 2 times
Number of LSA 1. Checksum 0x0041e0
OSPF Routing Process Fields
Table 1-5 explains the routing process fields.
 
Table 1-5: show ip ospf output details 
Field
Description
Routing Process with ID
OSPF process identifier and router identifier.
Process is not up
OSPF process is not running.
Process uptime is
OSPF process running time.
Process bound to VRF
VRF name
Router is in Graceful Restart
When in graceful restart.
Router is in Restart Signaling
When in restart signalling.
Bidirectional Forwarding Detection is configured
When BFD is enabled.
Conforms to RFC2328, and RFC1583 Compatibility flag is enabled
RFC compatibility.
Supports only single TOS (TOS0) routes
OSPF TOS-based routing was never deployed.
Supports opaque LSA
When opaque LSAs are supported.
Do not support Restarting
When restart is not supported.
Supports Graceful Restart
Method of restart in process.
Supports Restart Signaling
Method of restart in signaling process.
Connected to MPLS VPN Super backbone
VRF is enabled and the process is connected to the MPLS VPN backbone.
This router is an ABR, ABR Type is
Type of ABR:
Standard (RFC2328)
Alternative Cisco (RFC3509)
Alternative IBM (RFC3509)
Alternative Shortcut
This router is an ASBR (injecting external routing information)
Type of router function in the process.
SPF schedule delay initial
Initial SPF schedule delay.
SPF schedule delay min
Minimum delay between receiving a change to SPF calculation.
SPF schedule delay max
Maximum delay between receiving a change to SPF calculation.
Refresh timer
LSA refresh interval.
Number of incoming current DD exchange neighbors
Incoming neighbor Database Descriptors and maximum concurrent DDs.
Number of outgoing current DD exchange neighbors
Outgoing neighbor Database Descriptors and maximum concurrent DDs.
Initial LSA throttle delay
Initial delay for the generation of LSAs.
Minimum hold time for LSA throttle
Minimum hold time between generation of the same LSA.
Maximum wait time for LSA throttle
Maximum wait time between generation of the same LSA.
Minimum LSA arrival
Minimum time between reception of new LSAs during flooding.
Number of external LSA
Number of AS external LSAs and checksum.
Number of opaque AS LSA
Number of AS opaque LSAs and checksum.
Number of non-default external LSA
For database overflow, number of non-default external LSAs.
External LSA database is unlimited
When the external LSA database is unlimited.
External LSA database limit
Maximum number of LSAs in database.
Exit database overflow state interval is
Exit database overflow state interval.
Exit database overflow state interval is not configured
When the exit database overflow state interval is not set.
OSPF is [not] in database overflow state now
Whether OSPF is in database overflow state now.
Next attempt to exit database overflow state in
How long until OSPF tries to exit the database overflow state.
LSDB database overflow limit
Maximum number of LSAs that can be supported by the OSPF instance.
LSDB exceed overflow limit
Whether OSPF is exceeding the maximum number of LSAs.
Number of LSA originated
LSAs originated by the OSPF instance.
Number of LSA received
LSAs received by the OSPF instance.
Number of areas attached to this router
As stated
Next fields are repeated for each area
As stated
Area
Area identifier.
(BACKBONE)
Area is a backbone.
no-summary
Area is a stub and does no import summaries.
(Inactive)
Area is not active.
Number of interfaces in this area is
Number of interfaces in this area.
Number of fully adjacent neighbors in this area
As stated.
Number of fully adjacent virtual neighbors through this area
As stated.
Area has no authentication
Area does not use authentication.
Area has simple password authentication
Area uses password authentication.
Area has message digest authentication
Area uses MD5 authentication.
SPF algorithm last executed
As stated.
SPF algorithm executed
As stated.
Number of LSA
Number of LSAs in area link-state database and checksum.
End of area field
As stated.
NSSA Translator Role is
candidate: Translate Type-7 LSAs to Type-5 if router is elected.
never: Do not translate Type-7 LSAs to Type-5.
always: Always translate Type-7 LSAs to Type-5.
NSSA Translator State is
disabled: Router is not a border router.
enabled: Router is a border router.
elected: Router has been elected to be an NSSA translator.
Stability Interval
If an elected translator determines its services are no longer required, how long it continues to perform its services.
Number of NSSA Translator Events
As stated.
Shortcutting mode
Shortcut ABR that installs inter-area routes through non-backbone areas if non-backbone paths are really better:
 
Default
Enabled
Disabled
S-bit consensus
Whether other ABR agrees on S-bit:
 
ok
no
Dste Status
Whether DSTE is enabled or disabled.
 
Last modified date: 08/28/2023