From: Grabler, Ross \(IT\) (Ross.Grabler@morganstanley.com)
Date: Mon Dec 10 2007 - 11:22:48 ART
Send
Sh ip mroute 225.25.25.25
sh ip mroute 225.25.25.25 count
and sh ip rpf (what ever the source is).
Sh ip pim neig
Also your point to point is not in mcast.
Ross Grabler
Technology
1 Pierrepont Plaza, 12th Floor | Brooklyn, NY 11201
Phone: +1 718 754-5693
Ross.Grabler@morganstanley.com
-----Original Message-----
From: nobody@groupstudy.com [mailto:nobody@groupstudy.com] On Behalf Of
Dane Newman
Sent: Monday, December 10, 2007 8:44 AM
To: ccielab@groupstudy.com
Subject: Multicast issue
*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
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