From: Dane Newman (dnewman@datasc.com)
Date: Mon Dec 10 2007 - 10:54:18 ART
Oops typo it is from IE lab 7 6.1
On 12/10/07, Dane Newman <dnewman@datasc.com> wrote:
>
> *Hello Experts*
> **
> **
> *My problem is I believe I should be having an RPF failure and have to
> create a static mroute. The problem is its working and I don't understand
> why its working when it should not which is a problem in itself. Its
> probably some silly error or just some concept I don't under/stand grasp
> yet. This is from internetwork expert lab 9 problem 6.1.*
> **
> **
> *I have R5 which and R4 connected between the frame relay network
> 163.1.54.0/24 and a point to point link 163.1.45.0/24 *
> **
> *vlan 4 is connected to e0/1 on R4 and vlan 5 is connected to e0/0 on R5*
> **
> *Below is the show ip route to each of the vlans from the other respective
> router. Traffic is going across the frame relay link from the output. *
>
> Rack1R4#show ip route 163.1.5.0
> Routing entry for 163.1.5.0/24
> Known via "ospf 1", distance 110, metric 74, type intra area
> Redistributing via rip
> Advertised by rip metric 5
> Last update from 163.1.54.5 on Serial0/0, 00:27:00 ago
> Routing Descriptor Blocks:
> * 163.1.54.5, from 5.5.5.5, 00:27:00 ago, via Serial0/0
> Route metric is 74, traffic share count is 1
>
> Rack1R5#show ip route 163.1.4.0
> Routing entry for 163.1.4.0/24
> Known via "ospf 1", distance 110, metric 74, type intra area
> Last update from 163.1.54.4 on Serial0/0.54, 00:20:34 ago
> Routing Descriptor Blocks:
> * 163.1.54.4, from 4.4.4.4, 00:20:34 ago, via Serial0/0.54
> Route metric is 74, traffic share count is 1
>
>
>
> *When I ping from R4 to the group it pings back but it should be an RPF
> failure because it should use the frame relay link but the debug below after
> the ping shows it used the point to point link*
>
>
> Rack1R4#ping 225.25.25.25 source e0/1
>
> Type escape sequence to abort.
> Sending 1, 100-byte ICMP Echos to 225.25.25.25, timeout is 2 seconds:
> Packet sent with a source address of 163.1.4.4
>
> Reply to request 0 from 163.1.45.5, 40 ms
>
>
>
> Rack1R5#debug ip mpack
> IP multicast packets debugging is on
> *Mar 2 11:31:25.119: IP(0): s=163.1.45.4 (Serial0/1) d=225.25.25.25(Ethernet0/0) id=127, ttl=254, prot=1, len=100(100), mforward
>
> *I thought from my limited knowledge multicast routing follows the unicast
> routing table but how is it then going through the point to point link?*
> **
> **
> **
> *Here are the full configs*
>
>
> R4
> version 12.4
> service timestamps debug datetime msec
> service timestamps log datetime msec
> no service password-encryption
> !
> hostname Rack1R4
> !
> boot-start-marker
> boot-end-marker
> !
> enable password cisco
> !
> no aaa new-model
> !
> !
> ip cef
> no ip domain lookup
> !
> !
> ip multicast-routing
> !
> !
> !
> key chain 1
> key 1
> key-string CISCO
> !
> username Rack1R5 password 0 CISCO
> !
>
> !
> interface Loopback0
> ip address 150.1.4.4 255.255.255.0
> ip ospf network point-to-point
> ip ospf 1 area 0
> !
> interface Ethernet0/0
> ip address 192.10.1.4 255.255.255.0
> ip rip authentication mode md5
> ip rip authentication key-chain 1
> no ip route-cache cef
> no ip route-cache
> ip summary-address rip 163.1.0.0 255.255.192.0
> ip summary-address rip 150.1.0.0 255.255.240.0
> half-duplex
> !
> interface Serial0/0
> ip address 163.1.54.4 255.255.255.0
> encapsulation frame-relay
> ip ospf network point-to-point
> frame-relay map ip 163.1.54.5 405 broadcast
> frame-relay interface-dlci 405
> class KEEPALIVE
> no frame-relay inverse-arp
> !
> interface Ethernet0/1
> ip address 163.1.4.4 255.255.255.0
> ip pim dense-mode
> half-duplex
> !
> interface Serial0/1
> ip address 163.1.45.4 255.255.255.0
> ip pim dense-mode
> encapsulation ppp
> clock rate 56000
> ppp authentication pap
> ppp pap sent-username Rack1R4 password 0 CISCO
> !
> router ospf 1
> router-id 4.4.4.4
> log-adjacency-changes
> redistribute rip metric 50 subnets
> network 163.1.4.4 0.0.0.0 area 0
> network 163.1.54.4 0.0.0.0 area 0
> !
> router rip
> version 2
> redistribute ospf 1 metric 5
> passive-interface default
> no passive-interface Ethernet0/0
> no passive-interface Ethernet0/1
> no passive-interface Serial0/1
> network 163.1.0.0
> network 192.10.1.0
> distribute-list prefix SUM out Ethernet0/0
> distribute-list 8 in Ethernet0/0
> distance 109 163.1.45.5 0.0.0.0 4
> no auto-summary
> !
> router bgp 65004
> no synchronization
> bgp log-neighbor-changes
> bgp confederation identifier 200
> bgp confederation peers 65005 65007
> neighbor 163.1.45.5 remote-as 65005
> neighbor 192.10.1.254 remote-as 254
> neighbor 192.10.1.254 password CISCO
> no auto-summary
> !
> ip http server
> no ip http secure-server
> !
> ip forward-protocol nd
> !
> !
> !
> ip prefix-list FILTER seq 5 permit 163.1.45.5/32
> !
> ip prefix-list SUM seq 5 permit 150.1.0.0/20
> ip prefix-list SUM seq 10 permit 163.1.0.0/18
> !
> map-class frame-relay KEEPALIVE
> frame-relay end-to-end keepalive mode reply
> access-list 4 permit 150.1.7.0
> access-list 4 permit 163.1.7.0
> access-list 4 permit 10.3.3.0 0.0.0.255
> access-list 4 permit 163.1.0.0 0.0.0.255
> access-list 4 permit 163.1.3.0 0.0.0.255
> access-list 4 permit 163.1.7.0 0.0.0.255
> access-list 6 deny 10.3.3.3
> access-list 6 deny 163.1.0.0 0.0.0.255
> access-list 6 deny 163.1.3.0 0.0.0.255
> access-list 6 permit any
> access-list 8 deny any
> access-list 50 permit 163.1.57.0
> !
> route-map OSPF->RIP deny 10
> match tag 120 20
> !
> route-map OSPF->RIP permit 20
> set tag 10
> !
> route-map RIP->OSPF deny 10
> match tag 110 10
> !
> route-map RIP->OSPF permit 20
> set tag 20
> !
> !
> !
> control-plane
> !
>
> line con 0
> exec-timeout 0 0
> privilege level 15
> logging synchronous
> line aux 0
> exec-timeout 0 0
> privilege level 15
> line vty 0 4
> password cisco
> login
> !
> !
> end
>
>
> R5:
> version 12.4
> service timestamps debug datetime msec
> service timestamps log datetime msec
> no service password-encryption
> !
> hostname Rack1R5
> !
> boot-start-marker
> boot-end-marker
> !
> enable password cisco
> !
> no aaa new-model
> !
> !
> ip cef
> no ip domain lookup
> !
> !
> ip multicast-routing
> !
> username Rack1R4 password 0 CISCO
> !
> !
> interface Loopback0
> ip address 150.1.5.5 255.255.255.0
> ip ospf network point-to-point
> ip ospf 1 area 0
> !
> interface Tunnel15
> ip address 163.1.15.5 255.255.255.0
> ip ospf mtu-ignore
> tunnel source Serial0/0.35
> tunnel destination 150.1.1.1
> !
> interface Ethernet0/0
> ip address 163.1.5.5 255.255.255.0
> ip pim dense-mode
> ip igmp join-group 225.25.25.25
> half-duplex
> !
> interface Serial0/0
> no ip address
> encapsulation frame-relay
> no ip route-cache cef
> no ip route-cache
> no frame-relay inverse-arp
> !
> interface Serial0/0.35 point-to-point
> ip address 163.1.35.5 255.255.255.0
> no ip route-cache
> frame-relay interface-dlci 503
> !
> interface Serial0/0.54 point-to-point
> ip address 163.1.54.5 255.255.255.0
> no ip route-cache
> frame-relay interface-dlci 504
> class KEEPALIVE
> !
> interface Ethernet0/1
> ip address 163.1.57.5 255.255.255.0
> half-duplex
> !
> interface Serial0/1
> ip address 163.1.45.5 255.255.255.0
> ip pim dense-mode
> encapsulation ppp
> ppp authentication pap
> ppp pap sent-username Rack1R5 password 0 CISCO
> !
> router ospf 1
> router-id 5.5.5.5
> log-adjacency-changes
> area 0 range 150.1.4.0 255.255.254.0
> redistribute rip
> network 163.1.5.5 0.0.0.0 area 0
> network 163.1.15.5 0.0.0.0 area 0
> network 163.1.35.5 0.0.0.0 area 1
> network 163.1.54.5 0.0.0.0 area 0
> !
> router rip
> version 2
> passive-interface default
> no passive-interface Ethernet0/1
> no passive-interface Serial0/1
> network 163.1.0.0
> default-information originate
> distribute-list prefix DEFAULTROUTE out Ethernet0/1
> distance 109 0.0.0.0 255.255.255.255 4
> no auto-summary
> !
> router bgp 65005
> no synchronization
> bgp log-neighbor-changes
> bgp confederation identifier 200
> bgp confederation peers 65004 65007
> neighbor 163.1.35.3 remote-as 300
> neighbor 163.1.45.4 remote-as 65004
> neighbor 163.1.57.7 remote-as 65007
> no auto-summary
> !
> ip http server
> no ip http secure-server
> !
> ip forward-protocol nd
> !
> !
> !
> ip prefix-list DEFAULTROUTE seq 5 permit 0.0.0.0/0
> !
> map-class frame-relay KEEPALIVE
> frame-relay end-to-end keepalive mode request
> access-list 4 permit 150.1.7.0
> access-list 4 permit 163.1.7.0
> access-list 4 permit 192.10.1.0
> access-list 4 permit 10.3.3.0 0.0.0.255
> access-list 4 permit 163.1.0.0 0.0.0.255
> access-list 4 permit 163.1.3.0 0.0.0.255
> access-list 4 permit 163.1.7.0 0.0.0.255
> !
> route-map DEFAULTROUTE permit 10
> match interface Ethernet0/1
> !
> !
> !
> control-plane
>
> !
> !
> line con 0
> exec-timeout 0 0
> privilege level 15
> logging synchronous
> line aux 0
> exec-timeout 0 0
> privilege level 15
> line vty 0 4
> password cisco
> login
> !
> !
> end
>
>
-- Dane Newman MCSE: Messaging, CCNP, CCEA
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