Open Shortest Path First (OSPF) si TCP/IP internet routing protocol that's classified as an Interior Gateway Protocol (IGP).
OSPF protocol is based on link-state or SPF technology. This is a departure from the Bellman-Ford base used by traditional TCP/IP internet routing protocols. - RFC2328.
Each router maintains a database describing the Autonomous System's topology when using a link-state routing protocol, . The database is referred as link-state database. Each router participate in link-state has an identical database that identify attached router interface and reachable neighbors, then it's distributed throughout the Autonomous System with flood them.
When all routers using OSPF protocol, they will run the exact same algorithm, parallelly . Information that they get from link-state database, help them build short-path tree with itself as root. Then they calculate the route to each destination in the Autonomous System based short-path tree. based on short-path tree.
For this posting I'll not explain about OSPF too much, because this post focusing to help you how to configure OSPF, For better knowing about OSPF, please refer to RFC site (ietef).
Before We configure the router, We need some information like Interface IP, Loopback IP, Available port that want to use, additional information like hostname, OS version. This information is needed to make integration successfully and network engineer aware with their environment in live/production network. You get this information from your consulting engineer, or any person that have responsibility with IP Planning and Design. Below the Information about loopback IP address for each node and the hostname for the router.
We use loopback ip for several reason, such as for tldp target IP, ibgp neighbor target IP, ldp transport that using system/loopback interface, and others.
This lab has The topology like below:
For the first time to build this configuration, I will let us know, What must we do with new router. This is just minimal or we can say, this simple configuration. You may enhance more based on your purpose. Hope this tutorial can help you to know how OSPF work on your router. Basic configuration inform us, what must we do with new box router, and How create interface configuration,
This step inform how must we do when we start the router. Because the limitation of this VNF, there are some router that I cannot make card configuration and port. So It has many different with Router that came with hardware (Physical Hardware Router)
1. LAB-PE1-SR
Login: admin
Password:
This simulation software is the property of Alcatel. It may not
be sold, leased, loaned or licensed to any non-Alcatel entity.
A:vRR#
A:vRR#
A:vRR# show card
===============================================================================
Card Summary
===============================================================================
Slot Provisioned Type Admin Operational Comments
Equipped Type (if different) State State
-------------------------------------------------------------------------------
1 (not provisioned) up unprovisioned
iom3-xp-b
A sfm4-12 up up/active
B sfm4-12 up down/standby
(not equipped)
===============================================================================
A:vRR# configure card 1 card-type "iom3-xp-b"
*A:vRR# show mda
===============================================================================
MDA Summary
===============================================================================
Slot Mda Provisioned Type Admin Operational
Equipped Type (if different) State State
-------------------------------------------------------------------------------
1 1 (not provisioned) up unprovisioned
m5-1gb-sfp-b
===============================================================================
*A:vRR# configure card 1 mda 1 mda-type "m5-1gb-sfp-b"
*A:vRR# show card state
===============================================================================
Card State
===============================================================================
Slot/ Provisioned Type Admin Operational Num Num Comments
Id Equipped Type (if different) State State Ports MDA
-------------------------------------------------------------------------------
1 iom3-xp-b up up 2
1/1 m5-1gb-sfp-b up up 5
A sfm4-12 up up Active
B sfm4-12 up down Standby
(not equipped)
===============================================================================
*A:vRR#
2. LAB-PE2-MXlogin: root
--- JUNOS 14.1R1.10 built 2014-06-07 09:37:07 UTC
root@% cli
root>
root> configure
Entering configuration mode
[edit]
root# set system root-authentication plain-text-password
New password:
Retype new password:
[edit]
root# commit
commit complete
[edit]
root#
3. LAB-PE3-CRS
!!!!!!!!!!!!!!!!!!!! NO root-system username is configured. Need to configure root-system username. !!!!!!!!!!!!!!!!!!!!
--- Administrative User Dialog ---
Enter root-system username: achyar
Enter secret:
Use the 'admin' mode 'configure' command to modify this configuration.
IMPORTANT: READ CAREFULLY
Welcome to the Demo Version of Cisco IOS XRv (the "Software").
The Software is subject to and governed by the terms and conditions
of the End User License Agreement and the Supplemental End User
License Agreement accompanying the product, made available at the
time of your order, or posted on the Cisco website at
www.cisco.com/go/terms (collectively, the "Agreement").
As set forth more fully in the Agreement, use of the Software is
strictly limited to internal use in a non-production environment
solely for demonstration and evaluation purposes. Downloading,
installing, or using the Software constitutes acceptance of the
Agreement, and you are binding yourself and the business entity
that you represent to the Agreement. If you do not agree to all
of the terms of the Agreement, then Cisco is unwilling to license
the Software to you and (a) you may not download, install or use the
Software, and (b) you may return the Software as more fully set forth
in the Agreement.
Please login with any configured user/password, or cisco/cisco
User Access Verification
Username: achyar
Password:
B. Create Hostname
After creating the configuration, you may create the hostname for each router:
1. LAB-PE1-SR
A:vRR# configure system name LAB-PE-1-SR
*A:LAB-PE-1-SR#
2. LAB-PE2-MX[edit]
root# set system host-name LAB-PE-2-MX
[edit]
root# commit
commit complete
[edit]
root@LAB-PE-2-MX#
RP/0/0/CPU0:ios#
RP/0/0/CPU0:ios#configure
Tue Apr 12 15:34:34.746 UTC
RP/0/0/CPU0:ios(config)#
RP/0/0/CPU0:ios(config)#
RP/0/0/CPU0:ios(config)#hostname LAB-PE-3-CRS
RP/0/0/CPU0:ios(config)#commit
Tue Apr 12 15:34:56.374 UTC
RP/0/0/CPU0:Apr 12 15:34:56.494 : ike[228]: %SECURITY-IKE-4-WARNING : You may want to configure a domain-name
RP/0/0/CPU0:LAB-PE-3-CRS(config)#
After create the hostname, you may set-up your loopback configuration in each router
1. LAB-PE1-SR
When you set-up in NOKIA 7750-SR loopback, there is special feature or maybe we can call it special requirement. The loopback0 is configured under system interface. For other loopback you may use name depend your own
A:LAB-PE-1-SR# configure router interface "system"
A:LAB-PE-1-SR>config>router>if# address 192.168.20.1/32
*A:LAB-PE-1-SR>config>router>if# exit all
*A:LAB-PE-1-SR># /admin save
After save configuration then verifyingA:LAB-PE-1-SR# show router interface
===============================================================================
Interface Table (Router: Base)
===============================================================================
Interface-Name Adm Opr(v4/v6) Mode Port/SapId
IP-Address PfxState
-------------------------------------------------------------------------------
system Up Up/-- Network system
192.168.20.1/32 n/a
-------------------------------------------------------------------------------
Interfaces : 1
===============================================================================
A:LAB-PE-1-SR#
2. LAB-PE2-MXroot@LAB-PE-2-MX# ... 0 family inet address 192.168.20.2/32
[edit]
root@LAB-PE-2-MX# edit interfaces
[edit interfaces]
root@LAB-PE-2-MX# show
lo0 {
unit 0 {
family inet {
address 192.168.20.2/32;
}
}
}
[edit interfaces]
root@LAB-PE-2-MX# show | display set
set interfaces lo0 unit 0 family inet address 192.168.20.2/32
[edit interfaces]
root@LAB-PE-2-MX#
[edit]
root@LAB-PE-2-MX# commit
commit complete
Then do verifying after commitroot@LAB-PE-2-MX# run show interfaces terse | match inet
ge-0/0/0.0 up up inet 192.168.10.9/30
pfe-0/0/0.16383 up up inet
inet6
pfh-0/0/0.16383 up up inet
lo0.0 up up inet 192.168.20.2 --> 0/0
lo0.16384 up up inet 127.0.0.1 --> 0/0
lo0.16385 up up inet 128.0.0.4 --> 0/0
inet6 fe80::5201:f:fc02:0
[edit]
root@LAB-PE-2-MX#
3. LAB-PE3-CRS
RP/0/0/CPU0:LAB-PE-3-CRS(config)#interface loopback0
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#ipv4 address 192.168.20.3/32
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#commit
Then VerifyingRP/0/0/CPU0:LAB-PE-3-CRS#show ipv4 interface brief
Thu Apr 14 06:27:55.825 UTC
Interface IP-Address Status Protocol
Loopback0 192.168.20.3 Up Up
MgmtEth0/0/CPU0/0 unassigned Shutdown Down
GigabitEthernet0/0/0/0 unassigned Shutdown Down
GigabitEthernet0/0/0/1 unassigned Shutdown Down
GigabitEthernet0/0/0/2 unassigned Shutdown Down
GigabitEthernet0/0/0/3 unassigned Shutdown Down
RP/0/0/CPU0:LAB-PE-3-CRS#
Nokia 7750 - SR has a port that not binding with interface. It different than other 2 routers, where the port bind to interface. So when you work with NOKIA IP Product you need configure the port first then configure the interface.
A:LAB-PE-1-SR# configure port 1/1/1
*A:LAB-PE-1-SR>config>port# description "to_LAB-PE-2-MX - ge-0/0/0"
*A:LAB-PE-1-SR>config>port# no shutdown
*A:LAB-PE-1-SR>config>port# info
----------------------------------------------
description "to_LAB-PE-2-MX - ge-0/0/0"
ethernet
exit
no shutdown
----------------------------------------------
*A:LAB-PE-1-SR>config>port#
A:LAB-PE-1-SR# configure port 1/1/3
A:LAB-PE-1-SR>config>port# description "to_LAB-PE-3-CRS - Gi0/0/0/2"
*A:LAB-PE-1-SR>config>port# no shutdown
*A:LAB-PE-1-SR>config>port# info
----------------------------------------------
description "to_LAB-PE-3-CRS - Gi0/0/0/2"
ethernet
exit
no shutdown
----------------------------------------------
*A:LAB-PE-1-SR>config>port#
Verifying
A:LAB-PE-1-SR# show port 1
===============================================================================
Ports on Slot 1
===============================================================================
Port Admin Link Port Cfg Oper LAG/ Port Port Port C/QS/S/XFP/
Id State State MTU MTU Bndl Mode Encp Type MDIMDX
-------------------------------------------------------------------------------
1/1/1 Up Yes Up 8936 8936 - netw null xcme GIGE-LX 10KM
1/1/2 Down No Down 8936 8936 - netw null xcme GIGE-LX 10KM
1/1/3 Up Yes Up 8936 8936 - netw null xcme GIGE-LX 10KM
1/1/4 Down No Down 8936 8936 - netw null xcme GIGE-LX 10KM
1/1/5 Down No Down 8936 8936 - netw null xcme GIGE-LX 10KM
===============================================================================
A:LAB-PE-1-SR# show port 1 description
===============================================================================
Port Descriptions on Slot 1
===============================================================================
Port Id Description
-------------------------------------------------------------------------------
1/1/1 to_LAB-PE-2-MX - ge-0/0/0
1/1/2 10/100/Gig Ethernet SFP
1/1/3 to_LAB-PE-3-CRS - Gi0/0/0/2
1/1/4 10/100/Gig Ethernet SFP
1/1/5 10/100/Gig Ethernet SFP
===============================================================================
A:LAB-PE-1-SR#
E. Interface Configuration
After NOKIA 7750 - SR port configuration, you may create interface configuration in each node
1. LAB-PE1-SR
A:LAB-PE-1-SR# configure router interface to_LAB-PE-2-MX
*A:LAB-PE-1-SR>config>router>if$ address 192.168.10.10/30
*A:LAB-PE-1-SR>config>router>if$ port 1/1/1
*A:LAB-PE-1-SR>config>router>if$ info
----------------------------------------------
address 192.168.10.10/30
port 1/1/1
no shutdown
----------------------------------------------
*A:LAB-PE-1-SR>config>router>if$ exit all
*A:LAB-PE-1-SR# configure router interface to_LAB-PE-3-CRS
*A:LAB-PE-1-SR>config>router>if$ address 192.168.10.6/30
*A:LAB-PE-1-SR>config>router>if$ port 1/1/3
*A:LAB-PE-1-SR>config>router>if$ no shutdown
*A:LAB-PE-1-SR>config>router>if$ info
----------------------------------------------
address 192.168.10.6/30
port 1/1/3
no shutdown
----------------------------------------------
*A:LAB-PE-1-SR>config>router>if$ exit all
After create configuration and do /admin save, then verifyingA:LAB-PE-1-SR# /show router interface
===============================================================================
Interface Table (Router: Base)
===============================================================================
Interface-Name Adm Opr(v4/v6) Mode Port/SapId
IP-Address PfxState
-------------------------------------------------------------------------------
system Up Up/-- Network system
192.168.20.1/32 n/a
to_LAB-PE-2-MX Up Up/-- Network 1/1/1
192.168.10.10/30 n/a
to_LAB-PE-3-CRS Up Up/-- Network 1/1/3
192.168.10.6/30 n/a
-------------------------------------------------------------------------------
Interfaces : 3
===============================================================================
A:LAB-PE-1-SR#
2. LAB-PE2-MXroot@LAB-PE-2-MX# set interfaces ge-0/0/0 description "to_LAB-PE-1-SR Port 1/1/1"
root@LAB-PE-2-MX# set interfaces ge-0/0/0 unit 0 family inet address 192.168.10.9/30
root@LAB-PE-2-MX# set interfaces ge-0/0/2 description "to_LAB-PE-3-CRS - Gi0/0/0/0"
root@LAB-PE-2-MX# set interfaces ge-0/0/2 unit 0 family inet address 192.168.10.2/30
root@LAB-PE-2-MX# show | compare
[edit interfaces]
+ ge-0/0/0 {
+ description "to_LAB-PE-1-SR Port 1/1/1";
+ unit 0 {
+ family inet {
+ address 192.168.10.9/30;
+ }
+ }
+ }
+ ge-0/0/2 {
+ description "to_LAB-PE-3-CRS - Gi0/0/0/0";
+ unit 0 {
+ family inet {
+ address 192.168.10.2/30;
+ }
+ }
+ }
[edit]
root@LAB-PE-2-MX# commit
commit complete
root@LAB-PE-2-MX# run show interfaces terse | match inet
ge-0/0/0.0 up up inet 192.168.10.9/30
pfe-0/0/0.16383 up up inet
inet6
pfh-0/0/0.16383 up up inet
ge-0/0/2.0 up up inet 192.168.10.2/30
lo0.0 up up inet 192.168.20.2 --> 0/0
lo0.16384 up up inet 127.0.0.1 --> 0/0
lo0.16385 up up inet 128.0.0.4 --> 0/0
inet6 fe80::5201:f:fc02:0
[edit]
root@LAB-PE-2-MX#
3. LAB-PE3-CRSRP/0/0/CPU0:LAB-PE-3-CRS(config)#interface GigabitEthernet 0/0/0/0
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#description "to_LAB-PE-2-MX - ge-0/0/2"
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#ipv4 address 192.168.10.1/30
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#no shutdown
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#show
Wed Apr 13 11:45:22.789 UTC
interface GigabitEthernet0/0/0/0
description "to_LAB-PE-2-MX - ge-0/0/2"
ipv4 address 192.168.10.1 255.255.255.252
no shutdown
!
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#
RP/0/0/CPU0:LAB-PE-3-CRS(config)#interface gigabitEthernet 0/0/0/2
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#description "to_LAB-PE-1-SR - Port 1/1/3"
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#ipv4 address 192.168.10.5/30
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#no shu
RP/0/0/CPU0:LAB-PE-3-CRS(config-if)#show
Wed Apr 13 11:45:22.789 UTC
interface GigabitEthernet0/0/0/2
description "to_LAB-PE-1-SR - Port 1/1/3"
ipv4 address 192.168.10.5 255.255.255.252
no shutdown
!
Then commit, cisco csr will inform you the status after your commit. (it's cisco's strength point)
RP/0/0/CPU0:LAB-PE-3-CRS(config)#commit
Wed Apr 13 18:18:40.293 UTC
RP/0/0/CPU0:Apr 13 18:18:40.353 : ifmgr[226]: %PKT_INFRA-LINK-3-UPDOWN : Interface GigabitEthernet0/0/0/2, changed state to Down
RP/0/0/CPU0:Apr 13 18:18:40.353 : ifmgr[226]: %PKT_INFRA-LINK-3-UPDOWN : Interface GigabitEthernet0/0/0/0, changed state to Down
RP/0/0/CPU0:LAB-PE-3-CRS(config)#RP/0/0/CPU0:Apr 13 18:18:40.393 : ifmgr[226]: %PKT_INFRA-LINK-3-UPDOWN : Interface GigabitEthernet0/0/0/2, changed state to Up
RP/0/0/CPU0:Apr 13 18:18:40.393 : ifmgr[226]: %PKT_INFRA-LINK-3-UPDOWN : Interface GigabitEthernet0/0/0/0, changed state to Up
Verify the interface, after do commitRP/0/0/CPU0:LAB-PE-3-CRS#show ipv4 interface brief
Thu Apr 14 06:27:55.825 UTC
Interface IP-Address Status Protocol
Loopback0 192.168.20.3 Up Up
MgmtEth0/0/CPU0/0 unassigned Shutdown Down
GigabitEthernet0/0/0/0 192.168.10.1 Up Up
GigabitEthernet0/0/0/1 unassigned Shutdown Down
GigabitEthernet0/0/0/2 192.168.10.5 Up Up
GigabitEthernet0/0/0/3 unassigned Shutdown Down
RP/0/0/CPU0:LAB-PE-3-CRS#
When you done with interface configuration, then verify with ping test.
1. LAB-PE1-SR
A:LAB-PE-1-SR# ping 192.168.10.9 rapid count 100
PING 192.168.10.9 56 data bytes
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
---- 192.168.10.9 PING Statistics ----
100 packets transmitted, 100 packets received, 0.00% packet loss
round-trip min = 3.75ms, avg = 43.8ms, max = 119ms, stddev = 35.2ms
A:LAB-PE-1-SR# ping 192.168.10.5 rapid count 100
PING 192.168.10.5 56 data bytes
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
---- 192.168.10.5 PING Statistics ----
100 packets transmitted, 100 packets received, 0.00% packet loss
round-trip min = 3.77ms, avg = 22.0ms, max = 279ms, stddev = 34.5ms
A:LAB-PE-1-SR#
2. LAB-PE2-MX[edit]
root@LAB-PE-2-MX# run ping 192.168.10.10 rapid count 100
PING 192.168.10.10 (192.168.10.10): 56 data bytes
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
--- 192.168.10.10 ping statistics ---
100 packets transmitted, 100 packets received, 0% packet loss
round-trip min/avg/max/stddev = 4.383/6.486/17.129/2.230 ms
[edit]
root@LAB-PE-2-MX# run ping 192.168.10.1 rapid count 100
PING 192.168.10.1 (192.168.10.1): 56 data bytes
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
--- 192.168.10.1 ping statistics ---
100 packets transmitted, 100 packets received, 0% packet loss
round-trip min/avg/max/stddev = 2.202/3.118/5.889/1.003 ms
[edit]
root@LAB-PE-2-MX#
RP/0/0/CPU0:LAB-PE-3-CRS#ping 192.168.10.2 count 100
Wed Apr 13 23:50:08.340 UTC
Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to 192.168.10.2, timeout is 2 seconds:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (100/100), round-trip min/avg/max = 1/3/9 ms
RP/0/0/CPU0:LAB-PE-3-CRS#ping 192.168.10.6 count 100
Wed Apr 13 23:50:45.308 UTC
Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to 192.168.10.6, timeout is 2 seconds:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (100/100), round-trip min/avg/max = 1/10/259 ms
RP/0/0/CPU0:LAB-PE-3-CRS#
We have done with Interface configuration, let's try the main part for this. The ospf configuration, before read the configuration, there are some rule are applied :
- OSPF interface type point to point
- OSPF authentication is md5
- There is some use-case when you meet the problem with MTU OSPF caused Interface MTU. If you meet the problem like this please refer to this post Interworking ALU-Juniper
1. LAB-PE1-SR
A:LAB-PE-1-SR# configure router ospf
*A:LAB-PE-1-SR>config>router>ospf# router-id 192.168.20.1
*A:LAB-PE-1-SR>config>router>ospf# area 0
*A:LAB-PE-1-SR>config>router>ospf>area$ interface "system"
*A:LAB-PE-1-SR>config>router>ospf>area$ interface "to_LAB-PE-2-MX"
*A:LAB-PE-1-SR>config>router>ospf>area>if$ interface-type point-to-point
*A:LAB-PE-1-SR>config>router>ospf>area>if$ mtu 1500
*A:LAB-PE-1-SR>config>router>ospf>area>if$ authentication-type message-digest
*A:LAB-PE-1-SR>config>router>ospf>area>if$ message-digest-key 1 md5 3kiEu3l0eAD
*A:LAB-PE-1-SR>config>router>ospf>area>if$ no shutdown
*A:LAB-PE-1-SR>config>router>ospf>area>if$ info
----------------------------------------------
interface-type point-to-point
mtu 1500
authentication-type message-digest
message-digest-key 1 md5 "pPn0yLXmRNSkrDjSGwVIRm/sg/X2N5uPtsveDJvhowZhMlFulkrTB.GVQMWQK4Oz" hash2
no shutdown
----------------------------------------------
*A:LAB-PE-1-SR>config>router>ospf>area>if$back
*A:LAB-PE-1-SR>config>router>ospf>area$ interface "to_LAB-PE-3-CRS"
*A:LAB-PE-1-SR>config>router>ospf>area>if$ interface-type point-to-point
*A:LAB-PE-1-SR>config>router>ospf>area>if$ mtu 1500
*A:LAB-PE-1-SR>config>router>ospf>area>if$ authentication-type message-digest
*A:LAB-PE-1-SR>config>router>ospf>area>if$ message-digest-key 1 md5 3kiEu3l0eAD
*A:LAB-PE-1-SR>config>router>ospf>area>if$ no shutdown
*A:LAB-PE-1-SR>config>router>ospf>area>if$ info
----------------------------------------------
interface-type point-to-point
mtu 1500
authentication-type message-digest
message-digest-key 1 md5 "Ylm/w9TRTiOtMtH4MmgvdaeNTHCuz222AtAM5JZqrC9pZa2vaTf76OJAm2axph88" hash2
no shutdown
----------------------------------------------
*A:LAB-PE-1-SR>config>router>ospf>area>if$
2. LAB-PE2-MXroot@LAB-PE-2-MX# set routing-options router-id 192.168.20.2
root@LAB-PE-2-MX# set protocols ospf area 0 interface ge-0/0/0.0
root@LAB-PE-2-MX# edit protocols ospf area 0
[edit protocols ospf area 0.0.0.0]
root@LAB-PE-2-MX# edit interface ge-0/0/0.0
[edit protocols ospf area 0.0.0.0 interface ge-0/0/0.0]
root@LAB-PE-2-MX#
root@LAB-PE-2-MX# set authentication md5 1 key 3kiEu3l0eAD
root@LAB-PE-2-MX# set interface-type p2p
[edit protocols ospf area 0.0.0.0 interface ge-0/0/0.0]
root@LAB-PE-2-MX# show
interface-type p2p;
authentication {
md5 1 key "$9$PQ69EhrevLdbfz6/tprevMxNsYoJZDqm"; ## SECRET-DATA
}
[edit protocols ospf area 0.0.0.0 interface ge-0/0/0.0]
root@LAB-PE-2-MX#
[edit protocols ospf area 0.0.0.0 interface ge-0/0/0.0]
root@LAB-PE-2-MX# up
[edit protocols ospf area 0.0.0.0]
root@LAB-PE-2-MX# set interface ge-0/0/2.0
[edit protocols ospf area 0.0.0.0]
root@LAB-PE-2-MX# edit interface ge-0/0/2.0
[edit protocols ospf area 0.0.0.0 interface ge-0/0/2.0]
root@LAB-PE-2-MX# set authentication md5 1 key 3kiEu3l0eAD
[edit protocols ospf area 0.0.0.0 interface ge-0/0/2.0]
root@LAB-PE-2-MX# show
interface-type p2p;
authentication {
md5 1 key "$9$fz/ChclKMXVw5F/9pulKMW7-Y2aZGj.P"; ## SECRET-DATA
}
[edit protocols ospf area 0.0.0.0 interface ge-0/0/2.0]
root@LAB-PE-2-MX#
[edit]
root@LAB-PE-2-MX# show | compare
[edit]
+ protocols {
+ ospf {
+ area 0.0.0.0 {
+ interface ge-0/0/0.0 {
+ interface-type p2p;
+ authentication {
+ md5 1 key "$9$PQ69EhrevLdbfz6/tprevMxNsYoJZDqm"; ## SECRET-DATA
+ }
+ }
+ interface ge-0/0/2.0 {
+ interface-type p2p;
+ authentication {
+ md5 1 key "$9$fz/ChclKMXVw5F/9pulKMW7-Y2aZGj.P"; ## SECRET-DATA
+ }
+ }
+ }
+ }
+ }
[edit]
root@LAB-PE-2-MX# commit check
configuration check succeeds
[edit]
root@LAB-PE-2-MX# commit
commit complete
[edit]
root@LAB-PE-2-MX#
root@LAB-PE-2-MX# commit and-quit
commit complete
Exiting configuration mode
root@LAB-PE-2-MX>
RP/0/0/CPU0:LAB-PE-3-CRS(config)#router ospf 0
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf)#area 0
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar)#interface GigabitEthernet 0/0/0/0
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar-if)# network point-to-point
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar-if)#authentication message-digest
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar-if)#message-digest-key 1 md5 3kiEu3l0eAD
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar)#interface gigabitEthernet 0/0/0/2
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar-if)#network point-to-point
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar-if)#authentication message-digest
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar-if)#message-digest-key 1 md5 3kiEu3l0eAD
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar-if)#exit
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar)#show
Thu Apr 14 09:04:29.882 UTC
router ospf 0
area 0
interface Loopback0
!
interface GigabitEthernet0/0/0/0
authentication message-digest
message-digest-key 1 md5 encrypted 087247472C0C561B420E2D20
network point-to-point
!
interface GigabitEthernet0/0/0/2
authentication message-digest
message-digest-key 1 md5 encrypted 06550428695B5A155512332F
network point-to-point
!
!
!
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar)#
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar)#commit
Thu Apr 14 09:05:11.869 UTC
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar)#
RP/0/0/CPU0:LAB-PE-3-CRS(config-ospf-ar)#
RP/0/0/CPU0:sadas(config)#commit
Thu Apr 14 13:54:08.181 UTC
RP/0/0/CPU0:Apr 14 13:54:08.251
RP/0/0/CPU0:LAB-PE-3-CRS(config)#end
RP/0/0/CPU0:LAB-PE-3-CRS#
After create OSPF configuration and commit, you should check, ospf interface, and make sure ospf neighbor is establish. And Loopback interface in each node is reachable from others Node that connect using OSPF.
1. LAB-PE1-SR===============================================================================
Dest Prefix[Flags] Type Proto Age Pref
Next Hop[Interface Name] Metric
-------------------------------------------------------------------------------
192.168.10.0/30 Remote OSPF 00h28m47s 10
192.168.10.9 101
192.168.10.4/30 Local Local 00h28m53s 0
to_LAB-PE-3-CRS 0
192.168.10.8/30 Local Local 00h28m53s 0
to_LAB-PE-2-MX 0
192.168.20.1/32 Local Local 00h29m55s 0
system 0
192.168.20.2/32 Remote OSPF 00h28m47s 10
192.168.10.9 100
192.168.20.3/32 Remote OSPF 00h28m47s 10
192.168.10.5 101
-------------------------------------------------------------------------------
No. of Routes: 6
Flags: n = Number of times nexthop is repeated
B = BGP backup route available
L = LFA nexthop available
S = Sticky ECMP requested
===============================================================================
A:LAB-PE-1-SR#
Ping to other loopback node
A:LAB-PE-1-SR# ping 192.168.20.2 rapid count 100
PING 192.168.20.2 56 data bytes
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
---- 192.168.20.2 PING Statistics ----
100 packets transmitted, 100 packets received, 0.00% packet loss
round-trip min = 4.05ms, avg = 51.2ms, max = 143ms, stddev = 47.6ms
A:LAB-PE-1-SR# ping 192.168.20.3 rapid count 100
PING 192.168.20.3 56 data bytes
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
---- 192.168.20.3 PING Statistics ----
100 packets transmitted, 100 packets received, 0.00% packet loss
round-trip min = 3.58ms, avg = 19.2ms, max = 76.3ms, stddev = 22.6ms
A:LAB-PE-1-SR#
2. LAB-PE2-MXroot@LAB-PE-2-MX> show ospf interface
Interface State Area DR ID BDR ID Nbrs
ge-0/0/0.0 PtToPt 0.0.0.0 0.0.0.0 0.0.0.0 1
ge-0/0/2.0 PtToPt 0.0.0.0 0.0.0.0 0.0.0.0 1
lo0.0 DR 0.0.0.0 192.168.20.2 0.0.0.0 0
root@LAB-PE-2-MX> show ospf neighbor
Address Interface State ID Pri Dead
192.168.10.10 ge-0/0/0.0 Full 192.168.20.1 1 35
192.168.10.1 ge-0/0/2.0 Full 192.168.20.3 1 34
root@LAB-PE-2-MX> show route
inet.0: 9 destinations, 9 routes (9 active, 0 holddown, 0 hidden)
+ = Active Route, - = Last Active, * = Both
192.168.10.0/30 *[Direct/0] 1d 03:12:50
> via ge-0/0/2.0
192.168.10.2/32 *[Local/0] 1d 03:12:50
Local via ge-0/0/2.0
192.168.10.4/30 *[OSPF/10] 04:08:24, metric 2
> to 192.168.10.1 via ge-0/0/2.0
192.168.10.8/30 *[Direct/0] 1d 03:12:50
> via ge-0/0/0.0
192.168.10.9/32 *[Local/0] 1d 03:12:50
Local via ge-0/0/0.0
192.168.20.1/32 *[OSPF/10] 00:31:36, metric 1
> to 192.168.10.10 via ge-0/0/0.0
192.168.20.2/32 *[Direct/0] 1d 14:57:56
> via lo0.0
192.168.20.3/32 *[OSPF/10] 04:08:24, metric 2
> to 192.168.10.1 via ge-0/0/2.0
224.0.0.5/32 *[OSPF/10] 04:08:34, metric 1
MultiRecv
root@LAB-PE-2-MX>
Ping other loopback node
root@LAB-PE-2-MX> ping 192.168.20.1 rapid count 100
PING 192.168.20.1 (192.168.20.1): 56 data bytes
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
--- 192.168.20.1 ping statistics ---
100 packets transmitted, 100 packets received, 0% packet loss
round-trip min/avg/max/stddev = 4.410/10.242/271.507/26.441 ms
root@LAB-PE-2-MX> ping 192.168.20.3 rapid count 100
PING 192.168.20.3 (192.168.20.3): 56 data bytes
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
--- 192.168.20.3 ping statistics ---
100 packets transmitted, 100 packets received, 0% packet loss
round-trip min/avg/max/stddev = 2.175/3.710/12.814/1.556 ms
root@LAB-PE-2-MX>
RP/0/0/CPU0:LAB-PE-3-CRS#show ospf interface brief
Thu Apr 14 13:55:30.885 UTC
* Indicates MADJ interface, (P) Indicates fast detect hold down state
Interfaces for OSPF 0
Interface PID Area IP Address/Mask Cost State Nbrs F/C
Lo0 0 0 192.168.20.3/32 1 LOOP 0/0
Gi0/0/0/0 0 0 192.168.10.1/30 1 P2P 1/1
Gi0/0/0/2 0 0 192.168.10.5/30 1 P2P 1/1
RP/0/0/CPU0:LAB-PE-3-CRS#show ospf neighbor
Thu Apr 14 13:55:36.475 UTC
* Indicates MADJ interface
Neighbors for OSPF 0
Neighbor ID Pri State Dead Time Address Interface
192.168.20.2 128 FULL/ - 00:00:31 192.168.10.2 GigabitEthernet0/0/0/0
Neighbor is up for 00:00:48
192.168.20.1 1 FULL/ - 00:00:33 192.168.10.6 GigabitEthernet0/0/0/2
Neighbor is up for 00:37:55
Total neighbor count: 2
RP/0/0/CPU0:LAB-PE-3-CRS#show route
Thu Apr 14 13:55:47.754 UTC
Codes: C - connected, S - static, R - RIP, B - BGP, (>) - Diversion path
D - EIGRP, EX - EIGRP external, O - OSPF, IA - OSPF inter area
N1 - OSPF NSSA external type 1, N2 - OSPF NSSA external type 2
E1 - OSPF external type 1, E2 - OSPF external type 2, E - EGP
i - ISIS, L1 - IS-IS level-1, L2 - IS-IS level-2
ia - IS-IS inter area, su - IS-IS summary null, * - candidate default
U - per-user static route, o - ODR, L - local, G - DAGR, l - LISP
A - access/subscriber, a - Application route
M - mobile route, (!) - FRR Backup path
Gateway of last resort is not set
C 192.168.10.0/30 is directly connected, 00:00:59, GigabitEthernet0/0/0/0
L 192.168.10.1/32 is directly connected, 00:00:59, GigabitEthernet0/0/0/0
C 192.168.10.4/30 is directly connected, 19:37:07, GigabitEthernet0/0/0/2
L 192.168.10.5/32 is directly connected, 19:37:07, GigabitEthernet0/0/0/2
O 192.168.10.8/30 [110/2] via 192.168.10.2, 00:00:59, GigabitEthernet0/0/0/0
O 192.168.20.1/32 [110/1] via 192.168.10.6, 00:38:01, GigabitEthernet0/0/0/2
O 192.168.20.2/32 [110/1] via 192.168.10.2, 00:00:59, GigabitEthernet0/0/0/0
L 192.168.20.3/32 is directly connected, 1d15h, Loopback0
RP/0/0/CPU0:LAB-PE-3-CRS#
Ping othe loopback node
RP/0/0/CPU0:LAB-PE-3-CRS#
RP/0/0/CPU0:LAB-PE-3-CRS#ping 192.168.20.1 count 100
Thu Apr 14 13:57:59.215 UTC
Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to 192.168.20.1, timeout is 2 seconds:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (100/100), round-trip min/avg/max = 1/10/279 ms
RP/0/0/CPU0:LAB-PE-3-CRS#ping 192.168.20.2 count 100
Thu Apr 14 13:58:05.155 UTC
Type escape sequence to abort.
Sending 100, 100-byte ICMP Echos to 192.168.20.2, timeout is 2 seconds:
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
!!!!!!!!!!!!!!!!!!!!!!!!!!!!!!
Success rate is 100 percent (100/100), round-trip min/avg/max = 1/5/19 ms
RP/0/0/CPU0:LAB-PE-3-CRS#
Then done, OSPF Configuration was established. If you have problem or may correction with this configuration, free welcome to discuss on comment box or you can mail me :). Hope this configuration can help you to build your network with ospf protocol. Thank you
G. Reference
3 Comments
Anjrott mantab boss
ReplyDeleteThank you for taking time to provide us some of the useful and exclusive information with us.
ReplyDeleteRegards,
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Terima kasih mas Achyar. Boleh request mas, mpls dan service epipe dan vpls nya :D
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