Juniper OSPFv3

published: 17th of February 2019

Overview

3 steps to configure OSPFv3.

  • Create a router-id (optional)
  • Assign OSPF neighbor facing interfaces to OSPF area
  • Inject routes into OSPF via passive interfaces

Configuration

Create a router-id.

cmd 
set routing-options router-id 10.255.1.1

Assign OSPF neighbor facing interfaces to OSPF area.

cmd 
set protocols ospf3 area 0.0.0.0 interface ge-0/0/2.0

set protocols ospf3 realm ipv4-unicast area 0.0.0.0 interface ge-0/0/2.0

Inject routes into OSPF via passive interfaces.

cmd 
set protocols ospf3 area 0.0.0.13 interface ge-0/0/3.0 passive

set protocols ospf3 realm ipv4-unicast area 0.0.0.13 interface ge-0/0/3.0 passive

Topology

network/topologies/2-router.svg

P1R1

cmd 
set routing-options router-id 10.255.1.1
set protocols ospf3 area 0.0.0.0 interface ge-0/0/2.0
set protocols ospf3 realm ipv4-unicast area 0.0.0.0 interface ge-0/0/2.0
set protocols ospf3 area 0.0.0.13 interface ge-0/0/3.0 passive
set protocols ospf3 realm ipv4-unicast area 0.0.0.13 interface ge-0/0/3.0 passive

P1R2

cmd 
set routing-options router-id 10.255.1.2
set protocols ospf3 area 0.0.0.0 interface ge-0/0/1.0
set protocols ospf3 realm ipv4-unicast area 0.0.0.0 interface ge-0/0/1.0
set protocols ospf3 area 0.0.0.14 interface ge-0/0/4.0 passive
set protocols ospf3 realm ipv4-unicast area 0.0.0.14 interface ge-0/0/4.0 passive

Verification

Show OSPF interfaces.

cmd 
show ospf3 interface

# output

Interface           State   Area            DR ID           BDR ID          Nbrs
ge-0/0/2.0          DR      0.0.0.0         10.255.1.1      10.255.1.2         1
ge-0/0/3.0          DRother 0.0.0.13        0.0.0.0         0.0.0.0            0

Show OSPF neighbors.

cmd 
show ospf3 neighbor

# output

ID               Interface              State     Pri   Dead
10.255.1.2       ge-0/0/2.0             Full      128     37
  Neighbor-address fe80::2ab7:adff:fe8b:8b46

Show OSPF routing table.

cmd 
show route protocol ospf3

# output

inet.0: 50 destinations, 50 routes (50 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

10.1.24.0/24       *[OSPF3/10] 00:02:54, metric 2
                    > to 10.1.12.2 via ge-0/0/2.0

inet6.0: 88 destinations, 88 routes (88 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

fd00:10:1:24::/64  *[OSPF3/10] 00:02:54, metric 2
                    > to fe80::2ab7:adff:fe8b:8b46 via ge-0/0/2.0
ff02::5/128        *[OSPF3/10] 00:04:06, metric 1
                      MultiRecv

Show OSPF topology table.

cmd 
show ospf3 route realm ipv4-unicast

# output

Prefix                                       Path  Route      NH   Metric
                                             Type  Type       Type
10.255.1.1;0.0.0.1                           Intra Transit    IP   1
  NH-interface ge-0/0/2.0
10.255.1.2                                   Intra Area BR    IP   1
  NH-interface ge-0/0/2.0, NH-addr 10.1.12.2
10.1.12.0/24                                 Intra Network    IP   1
  NH-interface ge-0/0/2.0
10.1.13.0/24                                 Intra Network    IP   1
  NH-interface ge-0/0/3.0
10.1.24.0/24                                 Inter Network    IP   2
  NH-interface ge-0/0/2.0, NH-addr 10.1.12.2


show ospf3 route

# output

Prefix                                       Path  Route      NH   Metric
                                             Type  Type       Type
10.255.1.1;0.0.0.1                           Intra Transit    IP   1
  NH-interface ge-0/0/2.0
10.255.1.2                                   Intra Area BR    IP   1
  NH-interface ge-0/0/2.0, NH-addr fe80::2ab7:adff:fe8b:8b46
fd00:10:1:12::/64                            Intra Network    IP   1
  NH-interface ge-0/0/2.0
fd00:10:1:13::/64                            Intra Network    IP   1
  NH-interface ge-0/0/3.0
fd00:10:1:24::/64                            Inter Network    IP   2
  NH-interface ge-0/0/2.0, NH-addr fe80::2ab7:adff:fe8b:8b46

show OSPF link state database.

cmd 
show ospf3 database

# output

    OSPF3 database, Area 0.0.0.0
 Type       ID               Adv Rtr           Seq         Age  Cksum  Len
Router     *0.0.0.0          10.255.1.1       0x80000001   352  0xcc17  40
Router      0.0.0.0          10.255.1.2       0x80000001   353  0xc61c  40
Network    *0.0.0.1          10.255.1.1       0x80000001   352  0x7072  32
InterArPfx *0.0.0.1          10.255.1.1       0x80000002   409  0x3e87  36
InterArPfx  0.0.0.1          10.255.1.2       0x80000002   348  0x6b48  36
IntraArPfx *0.0.0.2          10.255.1.1       0x80000001   352  0x2960  44

    OSPF3 database, Area 0.0.0.13
 Type       ID               Adv Rtr           Seq         Age  Cksum  Len
InterArPfx *0.0.0.1          10.255.1.1       0x80000002   409  0x2c9a  36
InterArPfx *0.0.0.2          10.255.1.1       0x80000001   342  0x6f44  36
IntraArPfx *0.0.0.1          10.255.1.1       0x80000001   414  0x4f3b  44

    OSPF3 Link-Local database, interface ge-0/0/2.0 Area 0.0.0.0
 Type       ID               Adv Rtr           Seq         Age  Cksum  Len
Link       *0.0.0.1          10.255.1.1       0x80000002   374  0x74d5  56
Link        0.0.0.1          10.255.1.2       0x80000002   348  0x1895  56

Show OSPF message exchange.

cmd 
show ospf3 statistics

# output

Packet type             Total                  Last 5 seconds
                   Sent      Received        Sent      Received
   Hello            141           118           1             1
     DbD              3             2           0             0
   LSReq              1             1           0             0
LSUpdate              2             3           0             0
   LSAck              3             2           0             0

DBDs retransmitted     :                    0, last 5 seconds :          0
LSAs flooded           :                    4, last 5 seconds :          0
LSAs flooded high-prio :                    0, last 5 seconds :          0
LSAs retransmitted     :                    0, last 5 seconds :          0
LSAs transmitted to nbr:                    3, last 5 seconds :          0
LSAs requested         :                    2, last 5 seconds :          0
LSAs acknowledged      :                    6, last 5 seconds :          0

Flood queue depth      :               0
Total rexmit entries   :               0
db summaries           :               0
lsreq entries          :               0

Receive errors:
  None

https://www.juniper.net/documentation/en_US/junos/topics/topic-map/ospfv3-multiple-address-families.html