Wednesday, March 25, 2020

Juniper OSPF Lab Step By Step Configuration of Multiple Areas and Redistribution On vMX Routers


In this article will demonstrate how to configure juniper router for ospf routing protocol, the configuration will include the basic configuration of the juniper routers and the configuration of ospf using different areas and how to do redistribution. this article doesn't explain why we do configuration



OSPF Routing/ SSH/Traceroute/Traceoption
root@R1# show | display set
set version 14.1R4.8
set system host-name R1
set system root-authentication encrypted-password "$1$Dx3GKkfb$fKfretbcNxJJsFJq0SOx.1"
set system syslog user * any emergency
set system syslog file messages any notice
set system syslog file messages authorization info
set system syslog file interactive-commands interactive-commands any
set interfaces ge-0/0/0 unit 0 family inet address 172.18.1.1/24
set interfaces ge-0/0/1 unit 0 family inet address 172.26.1.1/30
set interfaces lo0 unit 0 family inet address 192.168.1.1/32
set protocols ospf area 0.0.0.1 interface ge-0/0/1.0
root@R2# show | display set
set version 14.1R4.8
set system host-name R2
set system root-authentication encrypted-password "$1$ian0bVIX$JsRbd0Gt0T8Jm4ekWowMW/"
set system syslog user * any emergency
set system syslog file messages any notice
set system syslog file messages authorization info
set system syslog file interactive-commands interactive-commands any
set interfaces ge-0/0/0 unit 0 family inet address 2.2.2.2/24
set interfaces ge-0/0/1 unit 0 family inet address 172.26.2.1/30
set interfaces ge-0/0/2 unit 0 family inet address 172.26.3.1/30
set interfaces ge-0/0/3 unit 0 family inet address 172.26.1.2/30
set interfaces lo0 unit 0 family inet address 192.168.1.2/32
set routing-options traceoptions file xyx.txt
set routing-options traceoptions flag all
set protocols ospf area 0.0.0.0 interface ge-0/0/1.0
set protocols ospf area 0.0.0.0 interface ge-0/0/2.0 metric 100
set protocols ospf area 0.0.0.0 interface ge-0/0/0.0
set protocols ospf area 0.0.0.1 interface ge-0/0/3.0
root@R3# show | display set
set version 14.1R4.8
set system host-name R3
set system root-authentication encrypted-password "$1$HyCIbfp.$MQVXTjy99H9PTED4frupe0"
set system syslog user * any emergency
set system syslog file messages any notice
set system syslog file messages authorization info
set system syslog file interactive-commands interactive-commands any
set interfaces ge-0/0/0 unit 0 family inet address 3.3.3.3/24
set interfaces ge-0/0/1 unit 0 family inet address 172.26.3.2/30
set interfaces ge-0/0/2 unit 0 family inet address 172.26.2.2/30
set interfaces ge-0/0/3 unit 0 family inet address 172.26.4.1/30
set interfaces lo0 unit 0 family inet address 192.168.1.3/32
set protocols ospf area 0.0.0.0 interface ge-0/0/2.0
set protocols ospf area 0.0.0.0 interface ge-0/0/1.0 metric 100
set protocols ospf area 0.0.0.0 interface ge-0/0/0.0
set protocols ospf area 0.0.0.2 interface ge-0/0/3.0
root@R4# show | display set
set version 14.1R4.8
set system host-name R4
set system root-authentication encrypted-password "$1$cJFfMoUG$8IAs9ZJ1ZPIt7ma.MWfBU1"
set system syslog user * any emergency
set system syslog file messages any notice
set system syslog file messages authorization info
set system syslog file interactive-commands interactive-commands any
set interfaces ge-0/0/1 unit 0 family inet address 172.26.4.2/30
set interfaces lo0 unit 0 family inet address 192.168.1.4/32
set protocols ospf area 0.0.0.2 interface ge-0/0/1.0

root@R1# run show route

inet.0: 11 destinations, 11 routes (11 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2.2.2.0/24         *[OSPF/10] 00:23:54, metric 2
                    > to 172.26.1.2 via ge-0/0/1.0
3.3.3.0/24         *[OSPF/10] 00:23:54, metric 3
                    > to 172.26.1.2 via ge-0/0/1.0
172.18.1.0/24      *[Direct/0] 00:25:46
                    > via ge-0/0/0.0
172.18.1.1/32      *[Local/0] 00:25:46
                      Local via ge-0/0/0.0
172.26.1.0/30      *[Direct/0] 00:25:46
                    > via ge-0/0/1.0
172.26.1.1/32      *[Local/0] 00:25:46
                      Local via ge-0/0/1.0
172.26.2.0/30      *[OSPF/10] 00:23:54, metric 2
                    > to 172.26.1.2 via ge-0/0/1.0
172.26.3.0/30      *[OSPF/10] 00:23:54, metric 101
                    > to 172.26.1.2 via ge-0/0/1.0
172.26.4.0/30      *[OSPF/10] 00:22:42, metric 3
                    > to 172.26.1.2 via ge-0/0/1.0
192.168.1.1/32     *[Direct/0] 00:25:46
                    > via lo0.0
224.0.0.5/32       *[OSPF/10] 00:24:04, metric 1
                      MultiRecv

root@R2# run show route

inet.0: 12 destinations, 12 routes (12 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2.2.2.0/24         *[Direct/0] 00:41:35
                    > via ge-0/0/0.0
2.2.2.2/32         *[Local/0] 00:41:37
                      Local via ge-0/0/0.0
3.3.3.0/24         *[OSPF/10] 00:34:30, metric 2
                    > to 172.26.2.2 via ge-0/0/1.0
172.26.1.0/30      *[Direct/0] 00:31:09
                    > via ge-0/0/3.0
172.26.1.2/32      *[Local/0] 00:31:09
                      Local via ge-0/0/3.0
172.26.2.0/30      *[Direct/0] 00:41:35
                    > via ge-0/0/1.0
172.26.2.1/32      *[Local/0] 00:41:37
                      Local via ge-0/0/1.0
172.26.3.0/30      *[Direct/0] 00:41:35
                    > via ge-0/0/2.0
172.26.3.1/32      *[Local/0] 00:41:37
                      Local via ge-0/0/2.0
172.26.4.0/30      *[OSPF/10] 00:23:14, metric 2
                    > to 172.26.2.2 via ge-0/0/1.0
192.168.1.2/32     *[Direct/0] 00:44:04
                    > via lo0.0
224.0.0.5/32       *[OSPF/10] 00:44:13, metric 1
                      MultiRecv

root@R3# run show route

inet.0: 12 destinations, 12 routes (12 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2.2.2.0/24         *[OSPF/10] 00:34:51, metric 2
                    > to 172.26.2.1 via ge-0/0/2.0
3.3.3.0/24         *[Direct/0] 00:35:05
                    > via ge-0/0/0.0
3.3.3.3/32         *[Local/0] 00:35:07
                      Local via ge-0/0/0.0
172.26.1.0/30      *[OSPF/10] 00:31:29, metric 2
                    > to 172.26.2.1 via ge-0/0/2.0
172.26.2.0/30      *[Direct/0] 00:35:05
                    > via ge-0/0/2.0
172.26.2.2/32      *[Local/0] 00:35:07
                      Local via ge-0/0/2.0
172.26.3.0/30      *[Direct/0] 00:35:05
                    > via ge-0/0/1.0
172.26.3.2/32      *[Local/0] 00:35:07
                      Local via ge-0/0/1.0
172.26.4.0/30      *[Direct/0] 00:23:34
                    > via ge-0/0/3.0
172.26.4.1/32      *[Local/0] 00:23:34
                      Local via ge-0/0/3.0
192.168.1.3/32     *[Direct/0] 00:37:32
                    > via lo0.0
224.0.0.5/32       *[OSPF/10] 00:37:40, metric 1
                      MultiRecv

root@R4# run show route

inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2.2.2.0/24         *[OSPF/10] 00:16:11, metric 3
                    > to 172.26.4.1 via ge-0/0/1.0
3.3.3.0/24         *[OSPF/10] 00:16:11, metric 2
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.1.0/30      *[OSPF/10] 00:16:11, metric 3
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.2.0/30      *[OSPF/10] 00:16:11, metric 2
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.3.0/30      *[OSPF/10] 00:16:11, metric 101
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.4.0/30      *[Direct/0] 00:16:56
                    > via ge-0/0/1.0
172.26.4.2/32      *[Local/0] 00:16:56
                      Local via ge-0/0/1.0
192.168.1.4/32     *[Direct/0] 00:16:56
                    > via lo0.0
224.0.0.5/32       *[OSPF/10] 00:16:57, metric 1
                      MultiRecv

root@R1# run show ospf database

    OSPF database, Area 0.0.0.1
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router  *192.168.1.1      192.168.1.1      0x80000002  1666  0x22 0x7058  36
Router   192.168.1.2      192.168.1.2      0x80000004  1672  0x22 0x6d55  36
Network  172.26.1.2       192.168.1.2      0x80000001  1672  0x22 0x44ea  32
Summary  2.2.2.0          192.168.1.2      0x80000002   486  0x22 0x2a9e  28
Summary  3.3.3.0          192.168.1.2      0x80000002   757  0x22 0x10b4  28
Summary  172.26.2.0       192.168.1.2      0x80000002   216  0x22 0x4cbc  28
Summary  172.26.3.0       192.168.1.2      0x80000001  2066  0x22 0x2580  28
Summary  172.26.4.0       192.168.1.2      0x80000001  1590  0x22 0x42c4  28

root@R4# run show ospf database

    OSPF database, Area 0.0.0.2
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router   192.168.1.3      192.168.1.3      0x80000004  1166  0x22 0x8735  36
Router  *192.168.1.4      192.168.1.4      0x80000003  1160  0x22 0x8437  36
Network  172.26.4.1       192.168.1.3      0x80000001  1166  0x22 0x5bcc  32
Summary  2.2.2.0          192.168.1.3      0x80000002   734  0x22 0x2e98  28
Summary  3.3.3.0          192.168.1.3      0x80000002    77  0x22 0xffc4  28
Summary  172.26.1.0       192.168.1.3      0x80000002   405  0x22 0x5bac  28
Summary  172.26.2.0       192.168.1.3      0x80000001  1534  0x22 0x48c0  28
Summary  172.26.3.0       192.168.1.3      0x80000001  1534  0x22 0x1f85  28
root@R2# run show ospf database

    OSPF database, Area 0.0.0.0
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router  *192.168.1.2      192.168.1.2      0x80000007  1118  0x22 0x752a  60
Router   192.168.1.3      192.168.1.3      0x80000006  1254  0x22 0xfe9a  60
Network *172.26.2.1       192.168.1.2      0x80000002  1389  0x22 0x5dce  32
Network *172.26.3.1       192.168.1.2      0x80000002  1714  0x22 0x52d8  32
Summary *172.26.1.0       192.168.1.2      0x80000003  1762  0x22 0x55b3  28
Summary  172.26.4.0       192.168.1.3      0x80000003  1313  0x22 0x2ed6  28

    OSPF database, Area 0.0.0.1
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router   192.168.1.1      192.168.1.1      0x80000002  1758  0x22 0x7058  36
Router  *192.168.1.2      192.168.1.2      0x80000004  1762  0x22 0x6d55  36
Network *172.26.1.2       192.168.1.2      0x80000001  1762  0x22 0x44ea  32
Summary *2.2.2.0          192.168.1.2      0x80000002   576  0x22 0x2a9e  28
Summary *3.3.3.0          192.168.1.2      0x80000002   847  0x22 0x10b4  28
Summary *172.26.2.0       192.168.1.2      0x80000002   305  0x22 0x4cbc  28
Summary *172.26.3.0       192.168.1.2      0x80000002    35  0x22 0x2381  28
Summary *172.26.4.0       192.168.1.2      0x80000001  1680  0x22 0x42c4  28
root@R3# run show ospf database

    OSPF database, Area 0.0.0.0
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router   192.168.1.2      192.168.1.2      0x80000007  1137  0x22 0x752a  60
Router  *192.168.1.3      192.168.1.3      0x80000006  1271  0x22 0xfe9a  60
Network  172.26.2.1       192.168.1.2      0x80000002  1408  0x22 0x5dce  32
Network  172.26.3.1       192.168.1.2      0x80000002  1733  0x22 0x52d8  32
Summary  172.26.1.0       192.168.1.2      0x80000003  1781  0x22 0x55b3  28
Summary *172.26.4.0       192.168.1.3      0x80000003  1330  0x22 0x2ed6  28

    OSPF database, Area 0.0.0.2
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router  *192.168.1.3      192.168.1.3      0x80000004  1330  0x22 0x8735  36
Router   192.168.1.4      192.168.1.4      0x80000003  1326  0x22 0x8437  36
Network *172.26.4.1       192.168.1.3      0x80000001  1330  0x22 0x5bcc  32
Summary *2.2.2.0          192.168.1.3      0x80000002   898  0x22 0x2e98  28
Summary *3.3.3.0          192.168.1.3      0x80000002   241  0x22 0xffc4  28
Summary *172.26.1.0       192.168.1.3      0x80000002   569  0x22 0x5bac  28
Summary *172.26.2.0       192.168.1.3      0x80000001  1698  0x22 0x48c0  28
Summary *172.26.3.0       192.168.1.3      0x80000001  1698  0x22 0x1f85  28

root@R2# run show ospf overview
Instance: master
  Router ID: 192.168.1.2
  Route table index: 0
  Area border router
  LSA refresh time: 50 minutes
  Area: 0.0.0.0
    Stub type: Not Stub
    Authentication Type: None
    Area border routers: 1, AS boundary routers: 0
    Neighbors
      Up (in full state): 2
  Area: 0.0.0.1
    Stub type: Not Stub
    Authentication Type: None
    Area border routers: 0, AS boundary routers: 0
    Neighbors
      Up (in full state): 1
  Topology: default (ID 0)
    Prefix export count: 0
    Full SPF runs: 13
    SPF delay: 0.200000 sec, SPF holddown: 5 sec, SPF rapid runs: 3
    Backup SPF: Not Needed

root@R2# run show ospf neighbor
Address          Interface              State     ID               Pri  Dead
172.26.2.2       ge-0/0/1.0             Full      192.168.1.3      128    33
172.26.3.2       ge-0/0/2.0             Full      192.168.1.3      128    34
172.26.1.1       ge-0/0/3.0             Full      192.168.1.1      128    38

root@R1# run ping 3.3.3.3
PING 3.3.3.3 (3.3.3.3): 56 data bytes
64 bytes from 3.3.3.3: icmp_seq=0 ttl=63 time=8.489 ms
64 bytes from 3.3.3.3: icmp_seq=1 ttl=63 time=15.055 ms
64 bytes from 3.3.3.3: icmp_seq=2 ttl=63 time=13.536 ms
^C
--- 3.3.3.3 ping statistics ---
3 packets transmitted, 3 packets received, 0% packet loss
round-trip min/avg/max/stddev = 8.489/12.360/15.055/2.807 ms

root@R1# set system services ssh
root@R2# set system services ssh
root@R3# set system services ssh
root@R4# set system services ssh
root@R1> ssh 172.26.4.2
The authenticity of host '172.26.4.2 (172.26.4.2)' can't be established.
ECDSA key fingerprint is f4:20:7f:81:4f:1b:ee:36:3b:19:92:60:e4:96:b0:fe.
Are you sure you want to continue connecting (yes/no)? yes
Warning: Permanently added '172.26.4.2' (ECDSA) to the list of known hosts.
Password:
--- JUNOS 14.1R4.8 built 2015-01-28 03:38:12 UTC
root@R4%


root@R1> traceroute 172.26.4.2
traceroute to 172.26.4.2 (172.26.4.2), 30 hops max, 40 byte packets
 1  172.26.1.2 (172.26.1.2)  6.160 ms  5.318 ms  4.966 ms
 2  172.26.2.2 (172.26.2.2)  23.143 ms  10.251 ms  6.887 ms
 3  172.26.4.2 (172.26.4.2)  22.726 ms  10.086 ms  10.131 ms
root@R2# run traceroute 172.26.4.2
traceroute to 172.26.4.2 (172.26.4.2), 30 hops max, 40 byte packets
 1  172.26.2.2 (172.26.2.2)  3.905 ms  4.651 ms  5.215 ms
 2  172.26.4.2 (172.26.4.2)  10.178 ms  6.783 ms  7.901 ms

2-      Redistribution

root@R1# set policy-options policy-statement direct-to-ospf term 1 from protocol direct
root@R1# set policy-options policy-statement direct-to-ospf term 1 from route-filter 172.18.1.0/24 exact
root@R1# set policy-options policy-statement direct-to-ospf term 1 then accept
root@R1# run show ospf database

    OSPF database, Area 0.0.0.1
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router  *192.168.1.1      192.168.1.1      0x80000007   126  0x22 0x6c55  36
Router   192.168.1.2      192.168.1.2      0x8000000a   604  0x22 0x615b  36
Network  172.26.1.2       192.168.1.2      0x80000005   298  0x22 0x3cee  32
Summary  2.2.2.0          192.168.1.2      0x80000005   911  0x22 0x24a1  28
Summary  3.3.3.0          192.168.1.2      0x80000006  1460  0x22 0x8b8   28
Summary  172.26.2.0       192.168.1.2      0x80000008  1460  0x22 0x40c2  28
Summary  172.26.3.0       192.168.1.2      0x80000008  1460  0x22 0x1787  28
Summary  172.26.4.0       192.168.1.2      0x80000005  1460  0x22 0x3ac8  28
    OSPF AS SCOPE link state database
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Extern  *172.18.1.0       192.168.1.1      0x80000001   126  0x22 0x3f48  36
root@R2# run show route

inet.0: 13 destinations, 13 routes (13 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2.2.2.0/24         *[Direct/0] 01:28:28
                    > via ge-0/0/0.0
2.2.2.2/32         *[Local/0] 01:28:30
                      Local via ge-0/0/0.0
3.3.3.0/24         *[OSPF/10] 00:25:09, metric 2
                    > to 172.26.2.2 via ge-0/0/1.0
172.18.1.0/24      *[OSPF/150] 00:02:55, metric 0, tag 0
                    > to 172.26.1.1 via ge-0/0/3.0
172.26.1.0/30      *[Direct/0] 01:18:02
                    > via ge-0/0/3.0
172.26.1.2/32      *[Local/0] 01:18:02
                      Local via ge-0/0/3.0
172.26.2.0/30      *[Direct/0] 01:28:28
                    > via ge-0/0/1.0
172.26.2.1/32      *[Local/0] 01:28:30
                      Local via ge-0/0/1.0
172.26.3.0/30      *[Direct/0] 01:28:28
                    > via ge-0/0/2.0
172.26.3.1/32      *[Local/0] 01:28:30
                      Local via ge-0/0/2.0
172.26.4.0/30      *[OSPF/10] 00:25:09, metric 2
                    > to 172.26.2.2 via ge-0/0/1.0
192.168.1.2/32     *[Direct/0] 00:25:10
                    > via lo0.0
224.0.0.5/32       *[OSPF/10] 01:31:06, metric 1
                      MultiRecv
root@R3# commit
commit complete

[edit]
root@R3# run show route

inet.0: 13 destinations, 13 routes (13 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2.2.2.0/24         *[OSPF/10] 00:26:26, metric 2
                    > to 172.26.2.1 via ge-0/0/2.0
3.3.3.0/24         *[Direct/0] 01:22:54
                    > via ge-0/0/0.0
3.3.3.3/32         *[Local/0] 01:22:56
                      Local via ge-0/0/0.0
172.18.1.0/24      *[OSPF/150] 00:04:12, metric 0, tag 0
                    > to 172.26.2.1 via ge-0/0/2.0
172.26.1.0/30      *[OSPF/10] 00:26:26, metric 2
                    > to 172.26.2.1 via ge-0/0/2.0
172.26.2.0/30      *[Direct/0] 01:22:54
                    > via ge-0/0/2.0
172.26.2.2/32      *[Local/0] 01:22:56
                      Local via ge-0/0/2.0
172.26.3.0/30      *[Direct/0] 01:22:54
                    > via ge-0/0/1.0
172.26.3.2/32      *[Local/0] 01:22:56
                      Local via ge-0/0/1.0
172.26.4.0/30      *[Direct/0] 01:11:23
                    > via ge-0/0/3.0
172.26.4.1/32      *[Local/0] 01:11:23
                      Local via ge-0/0/3.0
192.168.1.3/32     *[Direct/0] 00:26:46
                    > via lo0.0
224.0.0.5/32       *[OSPF/10] 01:25:29, metric 1
                      MultiRecv
root@R4# run show route

inet.0: 10 destinations, 10 routes (10 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2.2.2.0/24         *[OSPF/10] 00:29:02, metric 3
                    > to 172.26.4.1 via ge-0/0/1.0
3.3.3.0/24         *[OSPF/10] 00:29:02, metric 2
                    > to 172.26.4.1 via ge-0/0/1.0
172.18.1.0/24      *[OSPF/150] 00:06:33, metric 0, tag 0
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.1.0/30      *[OSPF/10] 00:29:02, metric 3
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.2.0/30      *[OSPF/10] 00:29:02, metric 2
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.3.0/30      *[OSPF/10] 00:29:02, metric 101
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.4.0/30      *[Direct/0] 01:08:17
                    > via ge-0/0/1.0
172.26.4.2/32      *[Local/0] 01:08:17
                      Local via ge-0/0/1.0
192.168.1.4/32     *[Direct/0] 01:08:17
                    > via lo0.0
224.0.0.5/32       *[OSPF/10] 01:08:18, metric 1
                      MultiRecv
root@R4# run traceroute 172.18.1.1
traceroute to 172.18.1.1 (172.18.1.1), 30 hops max, 40 byte packets
 1  172.26.4.1 (172.26.4.1)  13.548 ms  7.236 ms  4.322 ms
 2  172.26.2.1 (172.26.2.1)  12.274 ms  8.862 ms  12.483 ms
 3  172.18.1.1 (172.18.1.1)  195.357 ms  81.074 ms  163.249 ms
root@R2# run show ospf database

    OSPF database, Area 0.0.0.0
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router  *192.168.1.2      192.168.1.2      0x80000011   342  0x22 0x99f9  60
Router   192.168.1.3      192.168.1.3      0x8000000f   282  0x22 0x2569  60
Network  172.26.2.2       192.168.1.3      0x80000005  1811  0x22 0x43e3  32
Network  172.26.3.2       192.168.1.3      0x80000005  1811  0x22 0x38ed  32
Summary *172.26.1.0       192.168.1.2      0x80000008  1810  0x22 0x4bb8  28
Summary  172.26.4.0       192.168.1.3      0x80000008   576  0x22 0x24db  28
ASBRSum *192.168.1.1      192.168.1.2      0x80000001   476  0x22 0x9fc3  28

    OSPF database, Area 0.0.0.1
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router   192.168.1.1      192.168.1.1      0x80000007   478  0x22 0x6c55  36
Router  *192.168.1.2      192.168.1.2      0x8000000a   954  0x22 0x615b  36
Network *172.26.1.2       192.168.1.2      0x80000005   648  0x22 0x3cee  32
Summary *2.2.2.0          192.168.1.2      0x80000005  1261  0x22 0x24a1  28
Summary *3.3.3.0          192.168.1.2      0x80000007    35  0x22 0x6b9   28
Summary *172.26.2.0       192.168.1.2      0x80000008  1810  0x22 0x40c2  28
Summary *172.26.3.0       192.168.1.2      0x80000008  1810  0x22 0x1787  28
Summary *172.26.4.0       192.168.1.2      0x80000005  1810  0x22 0x3ac8  28
    OSPF AS SCOPE link state database
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Extern   172.18.1.0       192.168.1.1      0x80000001   478  0x22 0x3f48  36

root@R3# run show ospf database

    OSPF database, Area 0.0.0.0
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router   192.168.1.2      192.168.1.2      0x80000011   398  0x22 0x99f9  60
Router  *192.168.1.3      192.168.1.3      0x8000000f   337  0x22 0x2569  60
Network *172.26.2.2       192.168.1.3      0x80000005  1865  0x22 0x43e3  32
Network *172.26.3.2       192.168.1.3      0x80000006    42  0x22 0x36ee  32
Summary  172.26.1.0       192.168.1.2      0x80000008  1866  0x22 0x4bb8  28
Summary *172.26.4.0       192.168.1.3      0x80000008   631  0x22 0x24db  28
ASBRSum  192.168.1.1      192.168.1.2      0x80000001   533  0x22 0x9fc3  28

    OSPF database, Area 0.0.0.2
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router  *192.168.1.3      192.168.1.3      0x8000000a  1220  0x22 0x8530  36
Router   192.168.1.4      192.168.1.4      0x80000008  1887  0x22 0x8431  36
Network  172.26.4.2       192.168.1.4      0x80000003  1887  0x22 0x43e0  32
Summary *2.2.2.0          192.168.1.3      0x80000006  1865  0x22 0x269c  28
Summary *3.3.3.0          192.168.1.3      0x80000005  1514  0x22 0xf9c7  28
Summary *172.26.1.0       192.168.1.3      0x80000006  1865  0x22 0x53b0  28
Summary *172.26.2.0       192.168.1.3      0x80000009  1865  0x22 0x38c8  28
Summary *172.26.3.0       192.168.1.3      0x80000008   925  0x22 0x118c  28
ASBRSum *192.168.1.1      192.168.1.3      0x80000001   531  0x22 0xa3bd  28
    OSPF AS SCOPE link state database
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Extern   172.18.1.0       192.168.1.1      0x80000001   534  0x22 0x3f48  36
root@R4# run show ospf database

    OSPF database, Area 0.0.0.2
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router   192.168.1.3      192.168.1.3      0x8000000a  1139  0x22 0x8530  36
Router  *192.168.1.4      192.168.1.4      0x80000008  1804  0x22 0x8431  36
Network *172.26.4.2       192.168.1.4      0x80000003  1804  0x22 0x43e0  32
Summary  2.2.2.0          192.168.1.3      0x80000006  1784  0x22 0x269c  28
Summary  3.3.3.0          192.168.1.3      0x80000005  1433  0x22 0xf9c7  28
Summary  172.26.1.0       192.168.1.3      0x80000006  1784  0x22 0x53b0  28
Summary  172.26.2.0       192.168.1.3      0x80000009  1784  0x22 0x38c8  28
Summary  172.26.3.0       192.168.1.3      0x80000008   844  0x22 0x118c  28
ASBRSum  192.168.1.1      192.168.1.3      0x80000001   450  0x22 0xa3bd  28
    OSPF AS SCOPE link state database
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Extern   172.18.1.0       192.168.1.1      0x80000001   453  0x22 0x3f48  36

root@R2# run show ospf neighbor detail
Address          Interface              State     ID               Pri  Dead
172.26.2.2       ge-0/0/1.0             Full      192.168.1.3      128    37
  Area 0.0.0.0, opt 0x52, DR 172.26.2.2, BDR 172.26.2.1
  Up 00:37:12, adjacent 00:37:12
172.26.3.2       ge-0/0/2.0             Full      192.168.1.3      128    30
  Area 0.0.0.0, opt 0x52, DR 172.26.3.2, BDR 172.26.3.1
  Up 00:37:12, adjacent 00:37:12
172.26.1.1       ge-0/0/3.0             Full      192.168.1.1      128    34
  Area 0.0.0.1, opt 0x52, DR 172.26.1.2, BDR 172.26.1.1
  Up 00:37:13, adjacent 00:37:12

What Configuration option allows R1 to inject the 172.18.1.0/24 prefix into ospf as an internal ospf route while prohibiting adjacency formation

root@R1# set protocols ospf area 1 interface ge-0/0/0.0 passive
root@R2# run show route

inet.0: 13 destinations, 13 routes (13 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2.2.2.0/24         *[Direct/0] 01:48:06
                    > via ge-0/0/0.0
2.2.2.2/32         *[Local/0] 01:48:08
                      Local via ge-0/0/0.0
3.3.3.0/24         *[OSPF/10] 00:44:47, metric 2
                    > to 172.26.2.2 via ge-0/0/1.0
172.18.1.0/24      *[OSPF/10] 00:00:53, metric 2
                    > to 172.26.1.1 via ge-0/0/3.0
172.26.1.0/30      *[Direct/0] 01:37:40
                    > via ge-0/0/3.0
172.26.1.2/32      *[Local/0] 01:37:40
                      Local via ge-0/0/3.0
172.26.2.0/30      *[Direct/0] 01:48:06
                    > via ge-0/0/1.0
172.26.2.1/32      *[Local/0] 01:48:08
                      Local via ge-0/0/1.0
172.26.3.0/30      *[Direct/0] 01:48:06
                    > via ge-0/0/2.0
172.26.3.1/32      *[Local/0] 01:48:08
                      Local via ge-0/0/2.0
172.26.4.0/30      *[OSPF/10] 00:44:47, metric 2
                    > to 172.26.2.2 via ge-0/0/1.0
192.168.1.2/32     *[Direct/0] 00:44:48
                    > via lo0.0
224.0.0.5/32       *[OSPF/10] 01:50:44, metric 1
                      MultiRecv
root@R4# run show route

inet.0: 10 destinations, 10 routes (10 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

2.2.2.0/24         *[OSPF/10] 00:46:34, metric 3
                    > to 172.26.4.1 via ge-0/0/1.0
3.3.3.0/24         *[OSPF/10] 00:46:34, metric 2
                    > to 172.26.4.1 via ge-0/0/1.0
172.18.1.0/24      *[OSPF/10] 00:02:25, metric 4
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.1.0/30      *[OSPF/10] 00:46:34, metric 3
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.2.0/30      *[OSPF/10] 00:46:34, metric 2
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.3.0/30      *[OSPF/10] 00:46:34, metric 101
                    > to 172.26.4.1 via ge-0/0/1.0
172.26.4.0/30      *[Direct/0] 01:25:49
                    > via ge-0/0/1.0
172.26.4.2/32      *[Local/0] 01:25:49
                      Local via ge-0/0/1.0
192.168.1.4/32     *[Direct/0] 01:25:49
                    > via lo0.0
224.0.0.5/32       *[OSPF/10] 01:25:50, metric 1
                      MultiRecv
root@R4# run show ospf database

    OSPF database, Area 0.0.0.2
 Type       ID               Adv Rtr           Seq      Age  Opt  Cksum  Len
Router   192.168.1.3      192.168.1.3      0x8000000a  2158  0x22 0x8530  36
Router  *192.168.1.4      192.168.1.4      0x80000008  2823  0x22 0x8431  36
Network *172.26.4.2       192.168.1.4      0x80000003  2823  0x22 0x43e0  32
Summary  2.2.2.0          192.168.1.3      0x80000007   439  0x22 0x249d  28
Summary  3.3.3.0          192.168.1.3      0x80000005  2452  0x22 0xf9c7  28
Summary  172.18.1.0       192.168.1.3      0x80000001   169  0x22 0xd933  28
Summary  172.26.1.0       192.168.1.3      0x80000007   169  0x22 0x51b1  28
Summary  172.26.2.0       192.168.1.3      0x80000009  2803  0x22 0x38c8  28
Summary  172.26.3.0       192.168.1.3      0x80000008  1863  0x22 0x118c  28
ASBRSum  192.168.1.1      192.168.1.3      0x80000001  1469  0x22 0xa3bd  28
root@R4# run show route 172.18.1.1

inet.0: 10 destinations, 10 routes (10 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

172.18.1.0/24      *[OSPF/10] 00:08:17, metric 4
                    > to 172.26.4.1 via ge-0/0/1.0

root@R1# delete protocols ospf area 1 interface ge-0/0/0.0 passive
root@R1# delete protocols ospf area 1 interface ge-0/0/0.0
root@R4# run show route 172.18.1.1

inet.0: 10 destinations, 10 routes (10 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both

172.18.1.0/24      *[OSPF/150] 00:03:48, metric 0, tag 0
                    > to 172.26.4.1 via ge-0/0/1.0

root@R3# run show ospf route
Topology default Route Table:

Prefix             Path  Route      NH       Metric NextHop       Nexthop
                   Type  Type       Type            Interface     Address/LSP
192.168.1.1        Inter AS BR      IP            2 ge-0/0/2.0    172.26.2.1
192.168.1.2        Intra Area BR    IP            1 ge-0/0/2.0    172.26.2.1
192.168.1.4        Intra Router     IP            1 ge-0/0/3.0    172.26.4.2
2.2.2.0/24         Intra Network    IP            2 ge-0/0/2.0    172.26.2.1
3.3.3.0/24         Intra Network    IP            1 ge-0/0/0.0
172.18.1.0/24      Ext2  Network    IP            0 ge-0/0/2.0    172.26.2.1
172.26.1.0/30      Inter Network    IP            2 ge-0/0/2.0    172.26.2.1
172.26.2.0/30      Intra Network    IP            1 ge-0/0/2.0
172.26.3.0/30      Intra Network    IP          100 ge-0/0/1.0
172.26.4.0/30      Intra Network    IP            1 ge-0/0/3.0
root@R3# run show ospf interface
Interface           State   Area            DR ID           BDR ID          Nbrs
ge-0/0/0.0          DR      0.0.0.0         192.168.1.3     0.0.0.0            0
ge-0/0/1.0          DR      0.0.0.0         192.168.1.3     192.168.1.2        1
ge-0/0/2.0          DR      0.0.0.0         192.168.1.3     192.168.1.2        1
ge-0/0/3.0          BDR     0.0.0.2         192.168.1.4     192.168.1.3        1

root@R3# run show ospf interface extensive
Interface           State   Area            DR ID           BDR ID          Nbrs
ge-0/0/0.0          DR      0.0.0.0         192.168.1.3     0.0.0.0            0
  Type: LAN, Address: 3.3.3.3, Mask: 255.255.255.0, MTU: 1500, Cost: 1
  DR addr: 3.3.3.3, Priority: 128
  Adj count: 0
  Hello: 10, Dead: 40, ReXmit: 5, Not Stub
  Auth type: None
  Protection type: None
  Topology default (ID 0) -> Cost: 1
ge-0/0/1.0          DR      0.0.0.0         192.168.1.3     192.168.1.2        1
  Type: LAN, Address: 172.26.3.2, Mask: 255.255.255.252, MTU: 1500, Cost: 100
  DR addr: 172.26.3.2, BDR addr: 172.26.3.1, Priority: 128
  Adj count: 1
  Hello: 10, Dead: 40, ReXmit: 5, Not Stub
  Auth type: None
  Protection type: None
  Topology default (ID 0) -> Cost: 100
ge-0/0/2.0          DR      0.0.0.0         192.168.1.3     192.168.1.2        1
  Type: LAN, Address: 172.26.2.2, Mask: 255.255.255.252, MTU: 1500, Cost: 1
  DR addr: 172.26.2.2, BDR addr: 172.26.2.1, Priority: 128
  Adj count: 1
  Hello: 10, Dead: 40, ReXmit: 5, Not Stub
  Auth type: None
  Protection type: None
  Topology default (ID 0) -> Cost: 1
ge-0/0/3.0          BDR     0.0.0.2         192.168.1.4     192.168.1.3        1
  Type: LAN, Address: 172.26.4.1, Mask: 255.255.255.252, MTU: 1500, Cost: 1
  DR addr: 172.26.4.2, BDR addr: 172.26.4.1, Priority: 128
  Adj count: 1
  Hello: 10, Dead: 40, ReXmit: 5, Not Stub
  Auth type: None
  Protection type: None
  Topology default (ID 0) -> Cost: 1

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2 comments:

  1. Gear Net Technologies September 1, 2022 at 6:18 AM

    Gear Net Technologies is one of the leading providers of new and reconditioned Juniper network equipment. It provides deep network environment knowledge and a wide selection of Juniper Router Accessories.

    ReplyDelete
  2. cyfuturecloudJanuary 18, 2023 at 12:37 AM


    very informative and impressive article. Thanks for sharing with us
    cyfuture cloud

    ReplyDelete

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