From: Chris Lewis (chrlewiscsco@gmail.com)
Date: Tue Jan 10 2006 - 10:29:22 GMT-3
What ping command are you using? If yo uissue ping 239.1.1.1, the ping will
go out all interfaces, including both that connect the two routers together.
Chris
On 1/10/06, Prio Utomo <rionaldi@gmail.com> wrote:
>
> I set 2 routers (r4 & r5) with 2 connections between them (through FR and
> also
> Ethernet), I only enable ip pim sparse mode on the serial ONLY. R4 is the
> RP,
> I join igmp on one of the R4 interface (239.1.1.1)
> 1. My concept this configuration will not be running due to RPF check
> since
> the routing table will use ethernet due to better metric, but in reallity
> I
> can ping 239.1.1.1 from r5, why?
> 2. When I sh ip mroute 239.1.1.1 in r5, the group 239.1.1.1 is not found,
> why
> 3. seems the r5 is running dense mode based on the mroute, why? I
> configure
> sparse mode.
>
> can anyone explain them to me?
>
>
> --------------------------
> r5#sh runn
> Building configuration...
>
> Current configuration : 1025 bytes
> !
> version 12.3
> service timestamps debug datetime msec
> service timestamps log datetime msec
> no service password-encryption
> !
> hostname r5
> !
> boot-start-marker
> boot-end-marker
> !
> !
> no aaa new-model
> !
> resource policy
> !
> ip subnet-zero
> !
> !
> ip cef
> no ip domain lookup
> no ip dhcp use vrf connected
> !
> !
> ip multicast-routing
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> interface Loopback0
> ip address 8.8.5.5 255.255.255.0
> !
> interface Ethernet0/0
> ip address 8.8.54.5 255.255.255.0
> half-duplex
> !
> interface Serial0/0
> ip address 8.8.45.5 255.255.255.0
> ip pim sparse-mode
> encapsulation frame-relay
> frame-relay map ip 8.8.45.4 504 broadcast
> no frame-relay inverse-arp
> frame-relay lmi-type cisco
> !
> interface Ethernet0/1
> no ip address
> shutdown
> half-duplex
> !
> interface Serial0/1
> no ip address
> shutdown
> !
> router eigrp 100
> network 0.0.0.0
> no auto-summary
> !
> ip http server
> ip classless
> !
> !
> ip pim rp-address 8.8.4.4 10 override
> !
> access-list 10 permit 239.1.1.1
> !
> !
> !
> control-plane
> !
> !
> !
> !
>
> r5#sh ip mroute 239.1.1.1
> Group 239.1.1.1 not found
> r5#sh 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), 00:14:54/00:02:08, RP 0.0.0.0, flags: DCL
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Serial0/0, Forward/Sparse, 00:14:54/00:02:08
>
> r5#sh ip pim neigh
> PIM Neighbor Table
> Neighbor Interface Uptime/Expires Ver DR
>
> Address
Prio/Mode
> 8.8.45.4 Serial0/0 00:24:37/00:01:41 v2 1 / S
>
> r5#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
>
> 8.0.0.0/24 is subnetted, 5 subnets
> D 8.8.4.0 [90/409600] via 8.8.54.4, 00:28:08, Ethernet0/0
> C 8.8.5.0 is directly connected, Loopback0
> D 8.8.44.0 [90/409600] via 8.8.54.4, 00:28:08, Ethernet0/0
> C 8.8.45.0 is directly connected, Serial0/0
> C 8.8.54.0 is directly connected, Ethernet0/0
> r5#
>
> ------------------------------------------------------------------
>
> r4#sh runn
> Building configuration...
>
> Current configuration : 1235 bytes
> !
> version 12.3
> service timestamps debug datetime msec
> service timestamps log datetime msec
> no service password-encryption
> !
> hostname r4
> !
> boot-start-marker
> boot-end-marker
> !
> !
> no aaa new-model
> !
> resource policy
> !
> ip subnet-zero
> !
> !
> ip cef
> no ip domain lookup
> no ip dhcp use vrf connected
> !
> !
> ip multicast-routing
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> !
> interface Loopback0
> ip address 8.8.4.4 255.255.255.0
> ip pim sparse-mode
> !
> interface Loopback1
> ip address 8.8.44.4 255.255.255.0
> ip pim sparse-mode
> ip igmp join-group 239.1.1.1
> !
> interface Ethernet0/0
> ip address 8.8.54.4 255.255.255.0
> half-duplex
> !
> interface Serial0/0
> ip address 8.8.45.4 255.255.255.0
> ip pim sparse-mode
> encapsulation frame-relay
> frame-relay map ip 8.8.45.5 405 broadcast
> no frame-relay inverse-arp
> frame-relay lmi-type cisco
> !
> interface Ethernet0/1
> no ip address
> shutdown
> half-duplex
> !
> interface Serial0/1
> no ip address
> encapsulation frame-relay
> no frame-relay inverse-arp
> !
> router eigrp 100
> network 0.0.0.0
> no auto-summary
> !
> no ip http server
> ip classless
> !
> !
> ip pim rp-address 8.8.4.4 10 override
> !
> !
> ip access-list standard ovveride
> access-list 10 permit 239.1.1.1
> !
> !
> !
> control-plane
> !
> !
> !
> !
> !
> !
> !
> !
> !
> line con 0
> line aux 0
> line vty 0 4
> !
> !
> end
>
> r4#
> r4#sh 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
>
> (*, 239.1.1.1), 00:18:12/00:02:05, RP 8.8.4.4, flags: SJCL
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Loopback1, Forward/Sparse, 00:18:12/00:02:05
>
> (*, 224.0.1.40), 00:18:12/00:02:08, RP 0.0.0.0, flags: DCL
> Incoming interface: Null, RPF nbr 0.0.0.0
> Outgoing interface list:
> Loopback0, Forward/Sparse, 00:18:12/00:02:08
>
> r4#sh ip pim neigh
> PIM Neighbor Table
> Neighbor Interface Uptime/Expires Ver DR
>
> Address
Prio/Mode
> 8.8.45.5 Serial0/0 00:29:07/00:01:39 v2 1 / DR
> S
>
> r4#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
>
> 8.0.0.0/24 is subnetted, 5 subnets
> C 8.8.4.0 is directly connected, Loopback0
> D 8.8.5.0 [90/409600] via 8.8.54.5, 00:28:36, Ethernet0/0
> C 8.8.44.0 is directly connected, Loopback1
> C 8.8.45.0 is directly connected, Serial0/0
> C 8.8.54.0 is directly connected, Ethernet0/0
>
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