3 replies to this topic

[ckinikar]

Hi,

I am preparing for CCNP Route, I have attached screenshot from LAB4 CCNP Cisco Video Mentor.
I have configured basic frame relay for this topology. However frame relay config is not shown in Video Mentor. According to Video Mentor required OSPF configuration should be Network Type Broadcast but I could not able to configure the same, I could only able to configure Network Type POINT_TO_POINT. Please suggest.

I have configured as:

R1
interface Serial1/0
no ip address
encapsulation frame-relay
serial restart-delay 0
!
interface Serial1/0.1 point-to-point
ip address 172.16.1.1 255.255.255.252
frame-relay interface-dlci 181
!
interface Serial1/0.2 point-to-point
ip address 172.16.2.1 255.255.255.252
frame-relay interface-dlci 182

BB1
interface Serial1/0
no ip address
encapsulation frame-relay
serial restart-delay 0
!
interface Serial1/0.1 point-to-point
ip address 10.1.1.1 255.255.255.252
frame-relay interface-dlci 881
!
interface Serial1/0.2 point-to-point
ip address 172.16.1.2 255.255.255.252
frame-relay interface-dlci 811

BB2
interface Serial1/0
no ip address
encapsulation frame-relay
serial restart-delay 0
!
interface Serial1/0.1 point-to-point
ip address 10.1.1.2 255.255.255.252
frame-relay interface-dlci 882
!
interface Serial1/0.2 point-to-point
ip address 172.16.2.2 255.255.255.252
frame-relay interface-dlci 821

OSPF is configured and running fine.

R1#sh ip ospf neighbor
Neighbor ID	 Pri State		 Dead Time Address		 Interface
172.16.2.2	 0 FULL/ -	 00:00:35 172.16.2.2	 Serial1/0.2
172.16.1.2	 0 FULL/ -	 00:00:35 172.16.1.2	 Serial1/0.1
R1#sh ip ro
R1#sh ip route
Codes: C - connected, S - static, 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
	 i - IS-IS, su - IS-IS summary, L1 - IS-IS level-1, L2 - IS-IS level-2
	 ia - IS-IS inter area, * - candidate default, U - per-user static route
	 o - ODR, P - periodic downloaded static route
Gateway of last resort is not set
	 172.16.0.0/30 is subnetted, 2 subnets
C	 172.16.1.0 is directly connected, Serial1/0.1
C	 172.16.2.0 is directly connected, Serial1/0.2
	 10.0.0.0/30 is subnetted, 1 subnets
O	 10.1.1.0 [110/128] via 172.16.2.2, 00:11:57, Serial1/0.2
				 [110/128] via 172.16.1.2, 00:11:57, Serial1/0.1
R1#sh ip os
R1#sh ip ospf int
R1#sh ip ospf interface
Serial1/0.2 is up, line protocol is up
Internet Address 172.16.2.1/30, Area 0
Process ID 1, Router ID 172.16.2.1, Network Type POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:05
Supports Link-local Signaling (LLS)
Index 2/2, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 172.16.2.2
Suppress hello for 0 neighbor(s)
Serial1/0.1 is up, line protocol is up
Internet Address 172.16.1.1/30, Area 0
Process ID 1, Router ID 172.16.2.1, Network Type POINT_TO_POINT, Cost: 64
Transmit Delay is 1 sec, State POINT_TO_POINT
Timer intervals configured, Hello 10, Dead 40, Wait 40, Retransmit 5
oob-resync timeout 40
Hello due in 00:00:05
Supports Link-local Signaling (LLS)
Index 1/1, flood queue length 0
Next 0x0(0)/0x0(0)
Last flood scan length is 1, maximum is 1
Last flood scan time is 0 msec, maximum is 0 msec
Neighbor Count is 1, Adjacent neighbor count is 1
Adjacent with neighbor 172.16.1.2
Suppress hello for 0 neighbor(s)
R1#

Attached Files

•  ospf-nbma.JPG   124.36K   6 downloads

[martinlo]

if u use GNS3, u can lab all 4 ospf network types; which u must for exam;

so what is the problem? missing routes on R1? do u advertise B1 and B2 loopbacks into OSPF?

[ckinikar]

if u use GNS3, u can lab all 4 ospf network types; which u must for exam;

so what is the problem? missing routes on R1? do u advertise B1 and B2 loopbacks into OSPF?

Thanks, it worked.

[talent pk]

you need to change your topology. from point to point to multipoint

remember you need to add frame relay map remote ip local dlci broadcast

yes thats the keyword broadcast under frame relay that you need to add.


then under interface level. you need to add ip ospf network broadcast. to allow multicast traffic to flow through NBMA