OSPF

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Table 1 OSPF View

Command	Purpose
show ip ospf neighbor [OPTIONs]	Display OSPF neighbor information
show ip ospf route	Display OSPF route information
show ip ospf datebase	Display OSPF datebase information
show ip ospf vrf vrf_name neighbor [OPTIONs]	Display OSPF neighbor information for specified VRF
show ip ospf interface [ethernet\|vlan\|link-aggregation\|traffic\|json]	Display OSPF neighbor information for the interface

show ip ospf neighbor [

[Command] **show ip ospf neighbor ** [OPTIONs]

[Purpose] Display OSPF neighbor information.

[Options]

Option	Description
all	Display all OSPF neighbor information.
json	Display in Json format.
detail	Display neighbor details.
A.B.C.D	Display neighbor information based on neighbor ID.
ethernet	Display neighbor information for physical interface.
vlan	Display neighbor information for VLAN interface.
link-aggregation	Display neighbor information for aggregation interfaces.

[View] Privileged User View

[Use Cases]

sonic# show ip ospf neighbor
Neighbor ID     Pri State           Up Time         Dead Time Address         Interface                        RXmtL RqstL DBsmL
40.0.0.         1 Full/DR         2m16s             32.582s 40.0.0.2        ethernet 0/40:40.0.0.1                  0     0     0

show ip ospf route

[Command] show ip ospf route

[Purpose] Display OSPF route information.

[View] Privileged User View

[Use Cases]

sonic# show ip ospf route
============ OSPF network routing table ============
N    40.0.0.0/24           [10000] area: 0.0.0.10
                           directly attached to ethernet 0/40
============ OSPF router routing table =============
============ OSPF external routing table ===========

show ip ospf database

[Command] show ip ospf database

[Purpose] Display OSPF database information.

[View] Privileged User View

[Use Cases]

sonic# show ip ospf database
       OSPF Router with ID (40.0.0.1)
                Router Link States (Area 0.0.0.10)
Link ID         ADV Router      Age  Seq#       CkSum  Link count
40.0.0.1       40.0.0.1        1062 0x8000003c 0x71ca 1
200.0.0.1      200.0.0.1       1063 0x80000003 0x240f 1
                Net Link States (Area 0.0.0.10)
Link ID         ADV Router      Age  Seq#       CkSum
40.0.0.2       200.0.0.1       1063 0x80000001 0x2053

show ip ospf vrf

[Command] show ip ospf vrf vrf_name **neighbor ** [OPTIONs]

[Purpose] Display OSPF neighbor information for specified VRF.

[Parameters]

Parameter	Description
vrf_name	Vrf name.

[Options]

Option	Description
all	Display all OSPF neighbor information.
json	Display in Json format.
detail	Display neighbor details.
A.B.C.D	Display neighbor information based on neighbor ID.
ethernet	Display neighbor information for physical interface.
vlan	Display neighbor information for VLAN interface.
link-aggregation	Display neighbor information for aggregation interfaces.

[View] Privileged User View

[Use Cases]

sonic# show ip ospf vrf 100 neighbor
VRF Name: Vrf100
Neighbor ID     Pri State           Up Time         Dead Time Address         Interface                        RXmtL RqstL DBsmL
40.0.0.2          1 Full/Backup     3.521s            36.996s 40.0.0.2        ethernet 0/40:40.0.0.1                  1     0     0

show ip ospf interface [ethernet|vlan|link-aggregation|traffic|json]

[Command] show ip ospf interface [ethernet|vlan|link-aggregation|traffic|json] [Purpose] Display OSPF neighbor information for the interface.

[Parameters]

Parameter	Description
ethernet	Display neighbor information for physical interfaces.
vlan	Display neighbor information for VLAN interfaces.
link-aggregation	Display neighbor information for aggregation interfaces.
traffic	Display OSPF message count for interface.
json	Display interface neighbor information in JSON format.

[View] Privileged User View

[Use Cases]

sonic# show ip ospf interface
ethernet 0/40 is up
  ifindex 57, MTU 9216 bytes, BW 10 Mbit <UP,BROADCAST,RUNNING,ALLMULTI,MULTICAST>
  Internet Address 40.0.0.1/24, Broadcast 40.0.0.255, Area 0.0.0.10
  MTU mismatch detection: enabled
  Router ID 1.1.1.1, Network Type BROADCAST, Cost: 10000
  Transmit Delay is 1 sec, State Backup, Priority 1
  Designated Router (ID) 200.0.0.1 Interface Address 40.0.0.2/24
  Backup Designated Router (ID) 1.1.1.1, Interface Address 40.0.0.1
  Multicast group memberships: OSPFAllRouters OSPFDesignatedRouters
  Timer intervals configured, Hello 10s, Dead 40s, Wait 40s, Retransmit 5
    Hello due in 1.825s
  Neighbor Count is 1, Adjacent neighbor count is 1
  BFD: Detect Multiplier: 3, Min Rx interval: 300, Min Tx interval: 300

OSPF Config

Table 2 OSPF Config

Command	Purpose
routerospf_type [vrf_name]	Enable OSPF.
ospf router-id A.B.C.D	Configure the router ID for OSPF.
areaarea_id {authentication\|default-cost\|nssa\|stub}	Configure area related parameters.
auto-cost reference-bandwidth bandwidth	Configure auto-cost reference bandwidth.
redistribute src_protocol [metric metric_value\|route-map route_map]	Introducing routing for other protocols.
ip ospf area area_id	Enable OSPF function of the interface.
ip ospf network{broadcast\|non-broadcast\|point-to-multipoint\|point-to-point}	Configure OSPF network type.
ip ospf cost number	Configure cost value.
ip ospf priority priority	Configure OSPF router priority.
ip ospf mtu-ignore	Enable MTU ignore switch.
ip ospf{dead-interval\|hello-interval\|retransmit-interval} time	Configure OSPF various time intervals.
ip ospf authentication [null\|message-digest]	Configure OSPF interface authentication method.
ip ospf authentication-key auth-key	Configure passwords for simple password authentication.
ip ospf message-digest-key key-idmd5 key	Configure password for MD5 authentication.
*ip ospf bfd [profile profile_name*]	Configure OSPF and BFD linkage.
ip ospf ttl ttl_value	Set the TTL value of OSPF message.

router

[Command] router ospf_type [vrf_name]

[Purpose] Enable OSPF and enter the OSPF configuration view.

[Parameters]

Parameter	Description
ospf_type	The type of OSPF is ospf or ospf6, which is either IPv4 or IPv6
vrf_name	VRF name, default VRF if not specified

[View] Global Configuration View

[Notes] Run command no router ospf [vrf_name] to disable OSPF function.

[Use Cases]

sonic# configure
sonic(config)# router ospf

ospf router-id

[Command] ospf router-id A.B.C.D

[Purpose] Configure router ID.

[Parameters]

Parameter	Description
A.B.C.D	router id

[View] OSPF Configuration View

[Notes] Run command no ospf router-id A.B.C.D delete OSPF router id

[Use Cases]

sonic# configure
sonic(config)# router ospf
sonic(config-router)# ospf router-id 1.1.1.1

area

[Command] area area_id {authentication|default-cost|nssa|stub}

[Purpose] Configure area related parameters.

[Parameters]

Parameter	Description
area_id	area id
authentication	Set the area authentication as short answer password authentication or MD5 encryption authentication
default-cost	Set default cost for nssa or stub domains
nssa	Configure OSPF area as nssa
stub	Configure OSPF area as stub

[View] OSPF Configuration View

[Notes] Run command no area area_id {authentication| default-cost| nssa| stub} to delete area related parameter configurations.

[Use Cases]

sonic# configure
sonic(config)# router ospf
asonic(config-router)# area 10 stub

auto-cost reference-bandwidth

[Command] auto-cost reference-bandwidth bandwidth

[Purpose] Configure auto-cost reference bandwidth.

[Parameters]

Parameter	Description
bandwidth	Reference bandwidth value, the unit is Mb/s, with a value range of 1-4294967.

[View] OSPF Configuration View

[Notes] Run command no auto-cost reference-bandwidth to delete configured reference bandwidth.

[Use Cases]

sonic# configure
sonic(config)# router ospf
sonic(config-router)# auto-cost reference-bandwidth 10000

redistribute

[Command] redistribute src_protocol [metric metric_value|route-map route-map]

[Purpose] Redistribute information from another routing protocol in OSPF.

[Parameters]

Parameter	Description
src_protocol	Set source protocol (connected\|isis\|kernel\|ospf\|rip\|static\|bgp).
metric_value	Metric for redistributed routes, range from 0 to 16777214.
route-map	Route map reference.

[View] OSPF Configuration View

[Notes] The redistribution for the same protocol is an overriding configuration. Run command no redistribute src_protocol [metric metric_value|route-map route-map] to cancel route redistribution.

[Use Cases]

sonic# configure terminal
sonic(config)# router ospf
sonic(config-router)# redistribute connected metric 100

ip ospf area

[Command] ip ospf area area_id

[Purpose] Enable OSPF function of the interface.

[Parameters]

Parameter	Description
area_id	area id, it is an IP address or decimal form. If it is a decimal value, the range of values is 0~4294967295

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] Run command no ip ospf area area_id to disable OSPF function of the interface.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf area 10

ip ospf network {broadcast|non-broadcast|point-to-multipoint|point-to-point}

[Command] ip ospf network {broadcast|non-broadcast|point-to-multipoint|point-to-point}

[Purpose] Configure OSPF network type.

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] Run command no ip ospf network to not specify the network type for OSPF, the default network type is broadcast.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf network point-to-point

ip ospf cost

[Command] ip ospf cost number

[Purpose] Configure the cost value of OSPF network ports.

[Parameters]

Parameter	Description
number	Cost value, the value range is 1~65535

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] Run command no ip ospf cost to delete the cost value of the interface.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf cost 100

ip ospf priority

[Command] ip ospf priority priority

[Purpose] Configure OSPF router priority.

[Parameters]

Parameter	Description
priority	Priority level, range of values is 0-255, default level is 1

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] Run command no ip ospf priority to restore OSPF router priority to default value.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf priority 10

ip ospf mtu-ignore

[Command] ip ospf mtu-ignore

[Purpose] Enable MTU ignore switch.

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] Run command no ip ospf mtu-ingore to disable MTU ignore switch.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf mtu-ignore

ip ospf {dead-interval|hello-interval|retransmit-interval}

[Command] ip ospf {dead-interval|hello-interval|retransmit-interval}

[Purpose] Configure OSPF various time intervals.

[Parameters]

Parameter	Description
dead-interval	Neighbor timeout interval, measured in seconds, with a range of 1 to 65535, default to 40 seconds
hello-interval	The time interval for sending hello messages, measured in seconds, with a range of 1 to 65535. The default value is 10 seconds
retransmit-interval	The time interval for retransmitting LSA messages, measured in seconds, with a range of 1 to 65535, and a default of 5 seconds

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] Run command no ip ospf {dead-interval|hello-interval|retransmit-interval} to restore various time intervals to default values.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf dead-interval 50
sonic(config-if-0/40)# ip ospf hello-interval 10
sonic(config-if-0/40)# ip ospf retransmit-interval 20

ip ospf authentication [null|message-digest]

[Command] ip ospf authentication [null|message-digest] [Purpose] Configure OSPF interface authentication method.

[Parameters]

Parameter	Description
null	Configure authentication method as null authentication
message-digest	Configure the authentication method to MD5 authentication

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] When there are no parameters, the authentication method is simple password authentication. When both regional authentication and interface authentication are configured, interface authentication is preferred. Run command no ip ospf authentication to delete OSPF interface authentication.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf authentication
sonic(config-if-0/40)# ip ospf authentication message-digest

ip ospf authentication-key

[Command] ip ospf authentication-key auth-key

[Purpose] Configure simple password authentication password.

[Parameters]

Parameter	Description
auth-key	Authentication password, password length less than or equal to 8 digits

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] Run command no ip ospf authentication to delete password for simple password authentication.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf authentication-key 123456

ip ospf message-digest-key

[Command] ip ospf message-digest-key key-id md5 key

[Purpose] Configure MD5 authentication password.

[Parameters]

Parameter	Description
key_id	Key ID, with a value range of 1-255
key	Password for MD5 authentication method, with a length of less than or equal to 16 bits

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] Run command no ip ospf message-digest-key key_id md5 key to delete password for MD5 authentication method.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf message-digest-key 10 md5 123456

ip ospf bfd [profile

[Command] **ip ospf bfd ** [profile profile_name]

[Purpose] Configure OSPF and BFD linkage.

[Parameters]

Parameter	Description
profile_name	The profile name of BFD

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] Run command no ip ospf bfd to delete OSPF and BFD linkage.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf bfd sw1

ip ospf ttl

[Command] ip ospfttl ttl_value

[Purpose] Set the TTL value of OSPF message.

[Parameters]

Parameter	Description
ttl_value	TTL value, the range is 0~255

[View] Physical interface/VLAN interface/LAG interface configuration view

[Notes] Run command no ip ospf ttl to restore to the default value. The default TTL is 1.

[Use Cases]

sonic# configure
sonic(config)# interface ethernet 0/40
sonic(config-if-0/40)# ip ospf ttl 10