[cisco][LAB]OSPF in NBMA

Posted 2021-03-11 jbite9057

NBMA為一種沒有廣播類型的的網路連接，這會使得OSPF建立需要手動設定

 

拓樸如下:

 

 

R1#

!
interface Loopback0
 ip address 172.16.1.1 255.255.255.0
 ip ospf network point-to-point
!
interface Serial2/0
 ip address 192.168.1.1 255.255.255.0
 encapsulation frame-relay
 ip ospf network point-to-multipoint
 serial restart-delay 0
 frame-relay map ip 192.168.1.2 102 broadcast
 frame-relay map ip 192.168.1.3 103 broadcast
 no frame-relay inverse-arp
!
!
router ospf 1
 network 172.16.1.0 0.0.0.255 area 0
 network 192.168.1.0 0.0.0.255 area 0
!

R2#

!
interface Loopback0
 ip address 172.16.3.1 255.255.255.0
 ip ospf network point-to-point
!
interface Serial2/0
 ip address 192.168.1.2 255.255.255.0
 encapsulation frame-relay
 ip ospf network point-to-multipoint
 serial restart-delay 0
 frame-relay map ip 192.168.1.1 201 broadcast
 no frame-relay inverse-arp
!
router ospf 1
 network 172.16.3.0 0.0.0.255 area 0
 network 192.168.1.0 0.0.0.255 area 0
!

R3#

!
interface Loopback0
 ip address 172.16.4.1 255.255.255.0
 ip ospf network point-to-point
!
interface Serial2/0
 ip address 192.168.1.3 255.255.255.0
 encapsulation frame-relay
 ip ospf network point-to-multipoint
 serial restart-delay 0
 frame-relay map ip 192.168.1.1 301 broadcast
 no frame-relay inverse-arp
!
!
router ospf 1
 network 172.16.4.0 0.0.0.255 area 0
 network 192.168.1.0 0.0.0.255 area 0
!

R4為frame-relay switch的設定

hostname SW
!

!
frame-relay switching
!
interface Serial2/1
 no ip address
 encapsulation frame-relay

 frame-relay intf-type dce
 frame-relay route 102 interface Serial2/2 201
 frame-relay route 103 interface Serial2/3 301
 no sh 
!
interface Serial2/2
 no ip address
 encapsulation frame-relay
 
 frame-relay intf-type dce
 frame-relay route 201 interface Serial2/1 102
 no sh 
 
interface Serial2/3
 no ip address
 encapsulation frame-relay
 
 frame-relay intf-type dce
 frame-relay route 301 interface Serial2/1 103
 no sh