OSPF Point-to-Multipoint, Broadcast

我爱臭豆腐

OSPF Point-to-Multipoint, Broadcast
The following example illustrates a point-to-multipoint network with broadcast.

interface Serial0
ip address 10.0.1.1 255.255.255.0
encapsulation frame-relay
ip ospf cost 100
ip ospf network point-to-multipoint
frame-relay map ip 10.0.1.3 202 broadcast
frame-relay map ip 10.0.1.4 203 broadcast
frame-relay map ip 10.0.1.5 204 broadcast
frame-relay local-dlci 200
!
router ospf 1
network 10.0.1.0 0.0.0.255 area 0
neighbor 10.0.1.5 cost 5
neighbor 10.0.1.4 cost 10


The configuration of the neighbor at 10.0.1.3 is:

interface $core2s2
ip address 10.0.1.3 255.255.255.0
ip ospf network point-to-multipoint
encapsulation frame-relay
frame-relay local-dlci 301
frame-relay map ip $core7s0_ip 300 broadcast
no shut
!
router ospf 1
network 10.0.1.0 0.0.0.255 area 0


The output shown for neighbors in the first configuration above looks like this:

Router# show ip ospf neighbor
Neighbor ID     Pri   State           Dead Time   Address         Interface
4.1.1.1           1   FULL/  -        00:01:50    10.0.1.5        Serial0
3.1.1.1           1   FULL/  -        00:01:47    10.0.1.4        Serial0
2.1.1.1           1   FULL/  -        00:01:45    10.0.1.3        Serial0


The route information in the first configuration above looks like this:

Router# show ip route
Codes: C - connected, S - static, I - IGRP, R - RIP, M - mobile, B - BGP
       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 - IS-IS, L1 - IS-IS level-1, L2 - IS-IS level-2, * - candidate default
       U - per-user static route, o - ODR
Gateway of last resort is not set
C    1.0.0.0/8 is directly connected, Loopback0
     10.0.0.0/8 is variably subnetted, 4 subnets, 2 masks
O       10.0.1.3/32 [110/100] via 10.0.1.3, 00:39:08, Serial0
C       10.0.1.0/24 is directly connected, Serial0
O       10.0.1.5/32 [110/5] via 10.0.1.5, 00:39:08, Serial0
O       10.0.1.4/32 [110/10] via 10.0.1.4, 00:39:08, Serial0