From: George Goglidze (goglidze@gmail.com)
Date: Mon Dec 10 2007 - 11:53:25 ART
Hi Dane,
Enable pim on both ethernet interfaces of R4 and R5 and you'll see how
you'll fix it so that it will not work! :)))
as expected.
Regards,
On Dec 10, 2007 3:39 PM, Dane Newman <dnewman@datasc.com> wrote:
> Dear Mr Grabler,
>
> Thank you for the response.
>
> The s0/0 on R4 and s0/0.54 on R5 are not supposed to be running mutlicast.
> They are the route the unicast table takes. The only interfaces that
> multicast (as per the lab) is supposed to be running is the ppp link
> between
> R4 and R5. I understand the point the lab is trying to make that RPF
> error
> happens when the multicast path does not match the unicast path but I
> don't
> understand why its able to ping before I add a static mroute.
>
>
> The path of interfaces are as follows
>
>
> R4 e0/1--------------------> R4 s0/1 -----------------------> R5 s0/1
> --------------------->R5 e0/0
>
>
> Rack1R5#show ip mroute 225.25.25.25
> IP Multicast Routing Table
> Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C -
> Connected,
> L - Local, P - Pruned, R - RP-bit set, F - Register flag,
> T - SPT-bit set, J - Join SPT, M - MSDP created entry,
> X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
> U - URD, I - Received Source Specific Host Report,
> Z - Multicast Tunnel, z - MDT-data group sender,
> Y - Joined MDT-data group, y - Sending to MDT-data group
> Outgoing interface flags: H - Hardware switched, A - Assert winner
> Timers: Uptime/Expires
> Interface state: Interface, Next-Hop or VCD, State/Mode
>
> (*, 225.25.25.25), 01:37:21/00:02:21, RP 0.0.0.0, flags: DCL
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Serial0/1, Forward/Dense, 01:13:40/00:00:00
> Ethernet0/0, Forward/Dense, 01:37:21/00:00:00
>
>
> Rack1R5#show ip mroute count
> IP Multicast Statistics
> 2 routes using 1580 bytes of memory
> 2 groups, 0.00 average sources per group
> Forwarding Counts: Pkt Count/Pkts(neg(-) = Drops) per second/Avg Pkt
> Size/Kilobits per second
> Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
>
> Group: 225.25.25.25, Source count: 0, Packets forwarded: 0, Packets
> received: 0
>
> Group: 224.0.1.40, Source count: 0, Packets forwarded: 0, Packets
> received:
> 0
> Rack1R5#show ip pim ne
> PIM Neighbor Table
> Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
> S - State Refresh Capable
> Neighbor Interface Uptime/Expires Ver DR
> Address
> Prio/Mode
> 163.1.45.4 Serial0/1 01:15:19/00:01:43 v2 1 / S
>
>
>
>
> Rack1R4#show ip mroute
> IP Multicast Routing Table
> Flags: D - Dense, S - Sparse, B - Bidir Group, s - SSM Group, C -
> Connected,
> L - Local, P - Pruned, R - RP-bit set, F - Register flag,
> T - SPT-bit set, J - Join SPT, M - MSDP created entry,
> X - Proxy Join Timer Running, A - Candidate for MSDP Advertisement,
> U - URD, I - Received Source Specific Host Report,
> Z - Multicast Tunnel, z - MDT-data group sender,
> Y - Joined MDT-data group, y - Sending to MDT-data group
> Outgoing interface flags: H - Hardware switched, A - Assert winner
> Timers: Uptime/Expires
> Interface state: Interface, Next-Hop or VCD, State/Mode
>
> (*, 224.0.1.40), 01:42:39/00:02:03, RP 0.0.0.0, flags: DCL
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Serial0/1, Forward/Dense, 01:19:02/00:00:00
> Ethernet0/1, Forward/Dense, 01:42:39/00:00:00
> *I see that on R4 225.25.25.25 is not in the table but its pingable is
> this
> an issue?*
>
> Rack1R4#show ip mroute count
> IP Multicast Statistics
> 1 routes using 790 bytes of memory
> 1 groups, 0.00 average sources per group
> Forwarding Counts: Pkt Count/Pkts(neg(-) = Drops) per second/Avg Pkt
> Size/Kilobits per second
> Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
>
> Group: 224.0.1.40, Source count: 0, Packets forwarded: 0, Packets
> received:
> 0
> Rack1R4#show ip pim ne
> PIM Neighbor Table
> Mode: B - Bidir Capable, DR - Designated Router, N - Default DR Priority,
> S - State Refresh Capable
> Neighbor Interface Uptime/Expires Ver DR
> Address
> Prio/Mode
> 163.1.45.5 Serial0/1 01:19:39/00:01:23 v2 1 / S
> Rack1R4#
>
> On 12/10/07, Grabler, Ross (IT) <Ross.Grabler@morganstanley.com> wrote:
> >
> > 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
> >
> > _______________________________________________________________________
> > Subscription information may be found at:
> > http://www.groupstudy.com/list/CCIELab.html
> > --------------------------------------------------------
> >
> > NOTICE: If received in error, please destroy and notify sender. Sender
> > does not intend to waive confidentiality or privilege. Use of this email
> is
> > prohibited when received in error.
> >
>
>
>
> --
> Dane Newman
> MCSE: Messaging, CCNP, CCEA
>
> _______________________________________________________________________
> Subscription information may be found at:
> http://www.groupstudy.com/list/CCIELab.html
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