Hi all,
I cannot ping 239.2.2.2 from R5. Here my information:
Configuration for R1:
ip multicast-routing
interface Loopback0
ip pim sparse-mode
interface FastEthernet0/0
interface ATM2/0.105 point-to-point
ip pim sparse-mode
interface Serial4/2
ip pim sparse-mode
ip pim rp-address 125.125.125.2
+++++++++++++++++++++++++++++++++++++++
Configuration on R2:
ip multicast-routing
interface Loopback0
ip pim sparse-mode
ip igmp join-group 239.2.2.2
interface Serial4/2
ip pim sparse-mode
interface Serial4/3
ip pim sparse-mode
ip pim rp-address 125.125.125.2
+++++++++++++++++++++++++++++++++++++++
Configuration on R5:
ip multicast-routing
interface Loopback0
ip pim sparse-mode
interface ATM2/0.105 point-to-point
ip pim sparse-mode
interface Serial4/3
ip pim sparse-mode
ip pim rp-address 125.125.125.2
+++++++++++++++++++++++++++++++++++++++
Debug on R5 shows packets are forward but no Reply from R2 (note the small
dot at the line end)
R5#ping
Protocol [ip]:
Target IP address: 239.2.2.2
Repeat count [1]: 5
Datagram size [100]:
Timeout in seconds [2]:
Extended commands [n]: y
Interface [All]: loopback0
Time to live [255]:
Source address: 125.125.125.5
Type of service [0]:
Set DF bit in IP header? [no]:
Validate reply data? [no]:
Data pattern [0xABCD]:
Loose, Strict, Record, Timestamp, Verbose[none]:
Sweep range of sizes [n]:
Type escape sequence to abort.
Sending 5, 100-byte ICMP Echos to 239.2.2.2, timeout is 2 seconds:
Packet sent with a source address of 125.125.125.5
02:55:29: IP(0): s=125.125.125.5 (Loopback0) d=239.2.2.2 (Serial4/2) id=98,
ttl=254, prot=1, len=100(100), mroute olist null.
02:55:31: IP(0): s=125.125.125.5 (Loopback0) d=239.2.2.2 (Serial4/3) id=99,
ttl=254, prot=1, len=100(100), mforward.
02:55:33: IP(0): s=125.125.125.5 (Loopback0) d=239.2.2.2 (Serial4/3) id=100,
ttl=254, prot=1, len=100(100), mforward.
02:55:35: IP(0): s=125.125.125.5 (Loopback0) d=239.2.2.2 (Serial4/3) id=101,
ttl=254, prot=1, len=100(100), mforward.
02:55:37: IP(0): s=125.125.125.5 (Loopback0) d=239.2.2.2 (Serial4/3) id=102,
ttl=254, prot=1, len=100(100), mforward.
++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++
+++++++++++++++
Mrouting table on R2 shows ok:
R2#sho ip mroute 239.2.2.2
(*, 239.2.2.2), 00:03:24/stopped, RP 125.125.125.2, flags: SJCL
Incoming interface: Null, RPF nbr 0.0.0.0
Outgoing interface list:
Loopback0, Forward/Sparse, 00:03:24/00:02:24
(125.125.125.5, 239.2.2.2), 00:01:01/00:02:06, flags: L
Incoming interface: Serial4/2, RPF nbr 172.16.52.5
Outgoing interface list:
Loopback0, Forward/Sparse, 00:01:01/00:02:24
++++++++++++++++++++++++++++++++++++++++++++
However, when I show mroute count, the output is confusing: Packets
forwarded: 5, Packets received: 5 but Forwarding: 0/0/0/0
R2#sho ip mroute count
IP Multicast Statistics
3 routes using 2084 bytes of memory
2 groups, 0.50 average sources per group
Forwarding Counts: Pkt Count/Pkts per second/Avg Pkt Size/Kilobits per
second
Other counts: Total/RPF failed/Other drops(OIF-null, rate-limit etc)
Group: 239.2.2.2, Source count: 1, Packets forwarded: 5, Packets received: 5
RP-tree: Forwarding: 5/0/100/0, Other: 5/0/0
Source: 125.125.125.5/32, Forwarding: 0/0/0/0, Other: 0/0/0
Group: 224.0.1.40, Source count: 0, Packets forwarded: 0, Packets received:
0
Can anyone give me some hints?
FYI: I'm using Dynamips, all routers are 7200, IOS 12.2(25)S9. My
configuration on R6, R7, R8 (task 9.2) works without any problem.
Thanks.
Rin
