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Re: Redistribution Question posted 05/17/2001
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You're able to reach R3 and R5 because R6 has host routes for them. That happens when using ip ospf network point-to-multipoint; the hub puts in host routes for the other spokes so the spokes can reach each other. These host routes are injected into RIP. R9 accepts them because a mask isn't needed when the address is obviously a host address (as .3 and .5 are).

R9 isn't seeing 170.150.43.0/28 because of a classic VLSM/FLSM redistribution problem. RIP is a classful protocol. So it only understands full classful networks, host routes, and subnets of a network with the same mask as its interface (in other words, if a RIP router has 170.150.69.4/30, it will assume that any other subnet of the class B 170.150.0.0 is also a /30).

If the VLSM (OSPF) network mask is longer than the FLSM (RIP) mask, the usual solution is to summarize the VLSM route to the FLSM's mask length. But you have the opposite situation. The FLSM mask is longer than the VLSM mask. When that happens, you can't use summarization. When the FLSM mask is longer than the VLSM mask, your only options are (a) static routes, or (b) injecting a default route.

Jim

At 11:22 PM 5/16/2001 -0700, Wei Man wrote:
Hi,
I am running problem using redistribute connected
under router rip

Whatever I did, the connected route never come up
under rip

here is diagram

                  R3
                  |
                  |
R4<----------Frame Relay Cloud <----------->R6
                  |                          |
                  |                          |
                  R5                        R9

where R4 is Hub and using mask 28 and R6,R3 and R9 is
spoke using mask 28 and using OSPF as routing protocol

R4 serial 0 connect to Frame-Relay Switch and
R6 serial 0 connect to Frame-Relay Switch
R3 serial 0 connect to Frame-Relay Switch
R5 serial 0 connect to Frame-Relay Switch

R6 and R9 running RIP and link between R6 and R9
using mask 30

I am be able to ping serial 0 of R5 and serial 0 of
R3 from R9 and the route to reach it appear on R9

I am NOT be able to ping R6 Serial 0 and
R4 serial 0 from R9, even though I already put
redistribute connected under router rip (No Route to
Serial 0 of R6 and Serial 0 of R4)

here is the complete config form R4, R6 and R9

R9 Config
R9#sh run
Building configuration...

Current configuration:
!
version 12.0
no service pad
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R9
!
!
ip subnet-zero
no ip domain-lookup
!
!
controller T1 0
!
!
interface Loopback120
 ip address 199.1.0.9 255.255.255.0
 no ip directed-broadcast
!
interface Loopback121
 ip address 199.1.1.9 255.255.255.0
 no ip directed-broadcast
!
interface Loopback122
 ip address 199.1.2.9 255.255.255.0
 no ip directed-broadcast
!
interface Loopback123
 ip address 199.1.3.9 255.255.255.0
 no ip directed-broadcast
!
interface Loopback124
 ip address 199.1.4.9 255.255.255.0
 no ip directed-broadcast
!
interface Loopback125
 ip address 199.1.5.9 255.255.255.0
 no ip directed-broadcast
!
interface Loopback126
 ip address 199.1.6.9 255.255.255.0
 no ip directed-broadcast
!
interface Loopback127
 ip address 199.1.7.9 255.255.255.0
 no ip directed-broadcast
!
interface Loopback128
 ip address 199.1.8.9 255.255.255.0
 no ip directed-broadcast
!
interface Loopback129
 ip address 199.1.9.9 255.255.255.0
 no ip directed-broadcast
!
interface Ethernet0
 no ip address
 no ip directed-broadcast
 shutdown
!
interface Serial0
 ip address 170.150.69.5 255.255.255.252
 no ip directed-broadcast
!
interface Serial1
 no ip address
 no ip directed-broadcast
 shutdown
!
interface FR-ATM20
 no ip address
 no ip directed-broadcast
 shutdown
!
router rip
 timers basic 180 360 360 420
 network 170.150.0.0
 network 199.1.0.0
 network 199.1.1.0
 network 199.1.2.0
 network 199.1.3.0
 network 199.1.4.0
 network 199.1.5.0
 network 199.1.6.0
 network 199.1.7.0
 network 199.1.8.0
 network 199.1.9.0
!
ip classless
!
alias exec c conf t
alias exec ir show ip route
alias exec x show ipx route
alias exec o show ip ospf
alias exec e show ip eigrp
alias exec b show ip bgp
alias exec ib show ip int brief
alias exec xb show ipx int brief
alias exec xs show ipx servers
alias exec d clear ip route *
alias exec q clear ip bgp *
alias exec crs copy run start
!
line con 0
 transport input none
line aux 0
line vty 0 4
 privilege level 15
 login
!
!
voice-port 1/1
 timeouts call-disconnect 0
!
voice-port 1/2
 timeouts call-disconnect 0
!
voice-port 1/3
 timeouts call-disconnect 0
!
voice-port 1/4
 timeouts call-disconnect 0
!
voice-port 1/6
 timeouts call-disconnect 0
 timing dialout-delay 1000
!
end

R9#sh ip ro
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

     170.150.0.0/16 is variably subnetted, 8 subnets,
2 masks
R       170.150.58.4/30 [120/7] via 170.150.69.6,
00:01:04, Serial0
R       170.150.43.5/32 [120/7] via 170.150.69.6,
00:01:04, Serial0
R       170.150.43.3/32 [120/7] via 170.150.69.6,
00:01:04, Serial0
R       170.150.45.4/30 [120/7] via 170.150.69.6,
00:01:04, Serial0
R       170.150.7.7/32 [120/7] via 170.150.69.6,
00:01:04, Serial0
R       170.150.3.3/32 [120/7] via 170.150.69.6,
00:01:04, Serial0
R       170.150.78.7/32 [120/7] via 170.150.69.6,
00:01:04, Serial0
C       170.150.69.4/30 is directly connected, Serial0
C    199.1.9.0/24 is directly connected, Loopback129
C    199.1.8.0/24 is directly connected, Loopback128
C    199.1.3.0/24 is directly connected, Loopback123
C    199.1.2.0/24 is directly connected, Loopback122
R    160.60.0.0/16 [120/7] via 170.150.69.6, 00:01:05,
Serial0
C    199.1.1.0/24 is directly connected, Loopback121
C    199.1.0.0/24 is directly connected, Loopback120
C    199.1.7.0/24 is directly connected, Loopback127
C    199.1.6.0/24 is directly connected, Loopback126
C    199.1.5.0/24 is directly connected, Loopback125
C    199.1.4.0/24 is directly connected, Loopback124
R9#


R6 Config


R6#sh run
Building configuration...

Current configuration:
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R6
!
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
cns event-service server
!
!
!
!
!
interface Loopback10
 ip address 170.150.60.6 255.255.255.0
 ip ospf network point-to-point
!
interface Loopback20
 ip address 170.150.6.6 255.255.255.192
 ip ospf network point-to-point
!
interface Loopback100
 ip address 217.1.6.1 255.255.255.0
!
interface Serial0
 ip address 170.150.43.6 255.255.255.240
 encapsulation frame-relay
 ip ospf message-digest-key 1 md5 cisco
 ip ospf network point-to-multipoint
 ip ospf hello-interval 20
 ip ospf priority 0
 frame-relay map ip 170.150.43.3 604 broadcast
 frame-relay map ip 170.150.43.4 604 broadcast
 frame-relay map ip 170.150.43.5 604 broadcast
 frame-relay map ip 170.150.43.6 604 broadcast
 frame-relay lmi-type ansi
!
interface Serial1
 ip address 170.150.69.6 255.255.255.252
 clockrate 2000000
!
interface TokenRing0
 ip address 170.150.67.6 255.255.255.0
 ring-speed 4
!
router ospf 10
 area 0 authentication message-digest
 area 0 range 170.150.6.0 255.255.255.192
 area 0 range 170.150.43.0 255.255.255.0
 area 6 range 170.150.60.0 255.255.255.0
 redistribute connected metric-type 1 subnets
route-map inject_conn_rip_to_ospf
 redistribute rip metric 65 metric-type 1 subnets
route-map inject_rip_to_ospf
 passive-interface Serial1
 passive-interface TokenRing0
 network 170.150.6.0 0.0.0.63 area 0
 network 170.150.43.6 0.0.0.0 area 0
 network 170.150.60.0 0.0.0.255 area 6
!
router rip
 timers basic 180 360 360 420
 redistribute connected route-map
inject_conn_ospf_to_rip
 redistribute ospf 10 metric 7 route-map
inject_ospf_to_rip
 passive-interface Loopback10
 passive-interface Loopback20
 passive-interface Serial0
 network 170.150.0.0
 default-metric 1
 distribute-list 20 in Serial1
!
ip classless
no ip http server
!
!
ip access-list standard inject_conn_ospf_to_rip
ip access-list standard inject_conn_rip_to_ospf
 permit 170.150.69.4 0.0.0.3
ip access-list standard rdr_rip_ospf
 permit 199.1.0.0 0.0.255.255
access-list 20 deny   199.1.1.0 0.0.254.255
access-list 20 permit any
route-map inject_rip_to_ospf permit 10
 match ip address rdr_rip_ospf
!
route-map inject_ospf_to_rip deny 10
 match ip address rdr_rip_ospf
!
route-map inject_ospf_to_rip permit 20
!
route-map inject_conn_rip_to_ospf permit 10
 match ip address inject_conn_rip_to_ospf
!
route-map inject_conn_ospf_to_rip permit 10
 match interface Serial0
!
!
alias exec c conf t
alias exec ir show ip route
alias exec x show ipx route
alias exec o show ip ospf
alias exec e show ip eigrp
alias exec b show ip bgp
alias exec ib show ip int brief
alias exec xb show ipx int brief
alias exec xs show ipx servers
alias exec d clear ip route *
alias exec q clear ip bgp *
alias exec crs copy run start
!
line con 0
 transport input none
line aux 0
line vty 0 4
 privilege level 15
 login
!
end

R6#sh ip ro
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, 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

     170.150.0.0/16 is variably subnetted, 21 subnets,
5 masks
C       170.150.60.0/24 is directly connected,
Loopback10
O IA    170.150.58.4/30 [110/192] via 170.150.43.4,
00:13:00, Serial0
O       170.150.43.5/32 [110/128] via 170.150.43.4,
00:13:00, Serial0
O IA    170.150.47.0/24 [110/65] via 170.150.43.4,
00:13:00, Serial0
O       170.150.43.4/32 [110/64] via 170.150.43.4,
00:13:00, Serial0
O       170.150.43.3/32 [110/128] via 170.150.43.4,
00:13:00, Serial0
O       170.150.45.4/30 [110/1849] via 170.150.43.4,
00:13:01, Serial0
C       170.150.43.0/28 is directly connected, Serial0
O IA    170.150.33.0/24 [110/129] via 170.150.43.4,
00:13:01, Serial0
O IA    170.150.30.0/24 [110/138] via 170.150.43.4,
00:13:01, Serial0
O IA    170.150.14.0/24 [110/89] via 170.150.43.4,
00:13:01, Serial0
O IA    170.150.8.0/24 [110/193] via 170.150.43.4,
00:13:01, Serial0
O       170.150.4.0/26 [110/65] via 170.150.43.4,
00:13:02, Serial0
O       170.150.5.0/26 [110/129] via 170.150.43.4,
00:13:02, Serial0
C       170.150.6.0/26 is directly connected,
Loopback20
O IA    170.150.7.7/32 [110/194] via 170.150.43.4,
00:13:02, Serial0
O       170.150.3.3/32 [110/129] via 170.150.43.4,
00:13:02, Serial0
O IA    170.150.78.7/32 [110/193] via 170.150.43.4,
00:13:02, Serial0
O IA    170.150.78.8/32 [110/192] via 170.150.43.4,
00:13:02, Serial0
C       170.150.69.4/30 is directly connected, Serial1
C       170.150.67.0/24 is directly connected,
TokenRing0
C    217.1.6.0/24 is directly connected, Loopback100
R    199.1.8.0/24 [120/1] via 170.150.69.5, 00:02:30,
Serial1
R    199.1.2.0/24 [120/1] via 170.150.69.5, 00:02:30,
Serial1
     160.60.0.0/22 is subnetted, 1 subnets
O E1    160.60.60.0 [110/214] via 170.150.43.4,
00:13:02, Serial0
R    199.1.0.0/24 [120/1] via 170.150.69.5, 00:02:30,
Serial1
R    199.1.6.0/24 [120/1] via 170.150.69.5, 00:02:30,
Serial1
R    199.1.4.0/24 [120/1] via 170.150.69.5, 00:02:31,
Serial1
R6#


R4 config


R4#sh run
Building configuration...

Current configuration:
!
version 12.1
service timestamps debug uptime
service timestamps log uptime
no service password-encryption
!
hostname R4
!
no logging console
!
!
!
!
!
ip subnet-zero
no ip domain-lookup
!
cns event-service server
!
!
!
!
!
interface Loopback10
 ip address 170.150.47.4 255.255.255.0
 ip ospf network point-to-point
!
interface Loopback20
 ip address 170.150.4.2 255.255.255.192
 ip ospf network point-to-point
!
interface Loopback100
 ip address 217.1.4.1 255.255.255.0
!
interface Serial0
 ip address 170.150.43.4 255.255.255.240
 encapsulation frame-relay
 ip ospf message-digest-key 1 md5 cisco
 ip ospf network point-to-multipoint
 ip ospf hello-interval 20
 ip ospf priority 100
 no fair-queue
 frame-relay map ip 170.150.43.3 403 broadcast
 frame-relay map ip 170.150.43.4 403 broadcast
 frame-relay map ip 170.150.43.5 405 broadcast
 frame-relay map ip 170.150.43.6 406 broadcast
 no frame-relay inverse-arp
 frame-relay lmi-type ansi
!
interface Serial1
 ip address 170.150.144.2 255.255.255.252
!
interface TokenRing0
 ip address 170.150.14.4 255.255.255.0
 ring-speed 4
!
interface BRI0
 no ip address
 shutdown
!
interface Dialer0
 ip address 170.150.45.6 255.255.255.252
 no cdp enable
!
router ospf 10
 area 0 authentication message-digest
 area 0 range 170.150.4.0 255.255.255.192
 area 0 range 170.150.43.0 255.255.255.0
 area 0 range 170.150.45.4 255.255.255.252
 area 4 range 170.150.14.0 255.255.255.0
 area 4 range 170.150.47.0 255.255.255.0
 network 170.150.4.0 0.0.0.63 area 0
 network 170.150.14.0 0.0.0.255 area 4
 network 170.150.43.0 0.0.0.15 area 0
 network 170.150.45.4 0.0.0.3 area 0
 network 170.150.47.0 0.0.0.255 area 4
!
ip classless
no ip http server
!
!
alias exec c conf t
alias exec ir show ip route
alias exec x show ipx route
alias exec o show ip ospf
alias exec e show ip eigrp
alias exec b show ip bgp
alias exec ib show ip int brief
alias exec xb show ipx int brief
alias exec xs show ipx servers
alias exec d clear ip route *
alias exec q clear ip bgp *
alias exec crs copy run start
!
line con 0
 transport input none
line aux 0
line vty 0 4
 privilege level 15
 login
!
end

R4#sh ip ro
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, 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

     170.150.0.0/16 is variably subnetted, 21 subnets,
5 masks
O IA    170.150.60.0/24 [110/65] via 170.150.43.6,
00:36:29, Serial0
O IA    170.150.58.4/30 [110/128] via 170.150.43.5,
00:36:29, Serial0
O       170.150.43.6/32 [110/64] via 170.150.43.6,
00:36:29, Serial0
O       170.150.43.5/32 [110/64] via 170.150.43.5,
00:36:29, Serial0
C       170.150.47.0/24 is directly connected,
Loopback10
O       170.150.43.3/32 [110/64] via 170.150.43.3,
00:36:29, Serial0
C       170.150.45.4/30 is directly connected, Dialer0
C       170.150.43.0/28 is directly connected, Serial0
O IA    170.150.33.0/24 [110/65] via 170.150.43.3,
00:36:30, Serial0
O IA    170.150.30.0/24 [110/74] via 170.150.43.3,
00:36:30, Serial0
C       170.150.14.0/24 is directly connected,
TokenRing0
O IA    170.150.8.0/24 [110/129] via 170.150.43.5,
00:36:30, Serial0
C       170.150.4.0/26 is directly connected,
Loopback20
O       170.150.5.0/26 [110/65] via 170.150.43.5,
00:36:31, Serial0
O       170.150.6.0/26 [110/65] via 170.150.43.6,
00:36:31, Serial0
O IA    170.150.7.7/32 [110/130] via 170.150.43.5,
00:36:31, Serial0
O       170.150.3.3/32 [110/65] via 170.150.43.3,
00:36:31, Serial0
O IA    170.150.78.7/32 [110/129] via 170.150.43.5,
00:36:31, Serial0
O IA    170.150.78.8/32 [110/128] via 170.150.43.5,
00:36:31, Serial0
O E1    170.150.69.4/30 [110/84] via 170.150.43.6,
00:36:31, Serial0
C       170.150.144.0/30 is directly connected,
Serial1
C    217.1.4.0/24 is directly connected, Loopback100
O E1 199.1.8.0/24 [110/129] via 170.150.43.6,
00:36:31, Serial0
O E1 199.1.2.0/24 [110/129] via 170.150.43.6,
00:36:31, Serial0
     160.60.0.0/22 is subnetted, 1 subnets
O E1    160.60.60.0 [110/150] via 170.150.43.5,
00:36:31, Serial0
O E1 199.1.0.0/24 [110/129] via 170.150.43.6,
00:13:45, Serial0
O E1 199.1.6.0/24 [110/129] via 170.150.43.6,
00:36:32, Serial0
O E1 199.1.4.0/24 [110/129] via 170.150.43.6,
00:36:32, Serial0
R4#



Thanks in advance






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